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Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628
Management of premature ventricular complexes
Koji Higuchi, Mandeep Bhargava  ‍ ‍
Education in Heart
To cite: Higuchi K,
Bhargava M. Heart Epub
ahead of print: [please
include Day Month
Year]. doi:10.1136/
heartjnl-2020-318628
Cardiovascular Medicine,
Cleveland Clinic, Cleveland,
Ohio, USA
Correspondence to
Dr Mandeep Bhargava,
Cardiovascular Medicine
Desk J2-2, Cleveland Clinic,
Cleveland, OH 44195, USA;
​bhargam@​ccf.​org
© Author(s) (or their
employer(s)) 2021. No
commercial re-­
use. See rights
and permissions. Published
by BMJ.
INTRODUCTION
Premature ventricular complexes (PVCs) are the
most common arrhythmias in daily practice. At the
cellular level, ventricular myocytes spontaneously
depolarise to create an extrasystole ‘out of sync’
with the cardiac cycle.1
The prevalence depends on
the characteristics and comorbidities of the popula-
tion, the method by which the population is studied
and the duration of observation. PVCs have been
described in 1% of clinically normal people on stan-
dard electrocardiography (EKG) and 40%–75% of
healthy people assessed by short-­
term ambulatory
monitoring.2
Atherosclerosis Risk in Communities,
a large population-­
based study of 15 792 Americans
aged 45–65 years, demonstrated a higher preva-
lence of PVCs with age, structural heart disease
(SHD), hypertension, African–American ethnicity,
male sex and lower education.3
PVCs are generally benign in patients without
SHD.4 5
However, PVCs can be a trigger for life-­
threating arrhythmias such as ventricular tachy-
cardia (VT) and ventricular fibrillation (VF) causing
sudden cardiac death (SCD), especially in patients
post-­
myocardial infarction (MI). Risk stratification
for PVCs varies in specific populations with under-
lying cardiac disease, family history, genetic vari-
ants and sometimes coupling interval. The differing
implications with these variables is the basis of this
review.
SYMPTOMS
The symptoms of PVCs are variable. Patients
often have palpitations described as fluttering,
pounding, skipping beats or often a strange
sensation in the neck. Others may have fatigue,
shortness of breath or change of stamina and
endurance. The increased stroke volume of the
post-­
PVC beat may cause chest discomfort. Non-­
sustained or sustained episodes of VT may be
associated with presyncope or syncope.
In contrast, many patients are asymptomatic,
sometimes even with bigeminal PVCs or non-­
sustained VT. Symptoms can often be non-­
specific
when patients with frequent PVCs and even
preserved left ventricular (LV) function may report
a ‘vague fatigue’ associated with higher N-­
terminal
pro B-­
type natriuretic peptide and circumferential
end-­
systolic wall stress. These have been shown to
resolve after a successful ablation.6
PVCS WITH AND WITHOUT SHD
At the outset, one should establish whether PVCs
exist in the presence or absence of SHD. Studies
have shown that patients with frequent PVCs
after MI have higher risk of mortality and SCD.7 8
Does PVC suppression in this situation help? The
prospective Cardiac Arrhythmia Suppression Trial
(CAST) randomised patients after an MI to PVC
suppression with encainide, flecainide or placebo.9
Pharmacological PVC suppression had adverse
effects on the treatment group by increasing
mortality from arrhythmic and non-­
arrhythmic
cardiac causes. This raised concerns for proar-
rhythmic and negative inotropic properties of these
agents, restraining use of class IC antiarrhythmic
drugs (AADs) in patients with SHD.
Amiodarone has been used for patients
with frequent PVCs after MI in two prospec-
tive randomised controlled trials, the European
Myocardial Infarct Amiodarone Trial (EMIAT)
and Canadian Amiodarone Myocardial Infarction
Arrhythmia (CAMIAT) investigations. Both trials
showed that amiodarone reduced the incidence of
VF or arrhythmic death among survivors of acute
MI with frequent PVCs but no reduction in all-­
cause mortality.10 11
Neither trial supported the
prophylactic use of amiodarone in these patients
but showed a rationale for its use for symptomatic
PVCs or in patients with impaired LV function.
EKG and echocardiography are most commonly
used to screen for SHD. Stress testing, nuclear
imaging and late gadolinium enhancement with
cardiac MRI (LGE-­
CMR) are useful for further
evaluation of ischaemia, inflammation and scars.
Patients with pleomorphic PVC have a higher prev-
alence of scarring.12
Most patients with low burden
of monomorphic PVCs (generally <5%) in the
absence of SHD have a fairly benign course.
PVC-INDUCED CARDIOMYOPATHY
We first shared our experience with PVC ablation
in 23 patients showing positive impact of successful
ablation on LV function in patients with frequent
ventricular ectopy.13
Prior anecdotal studies had
shown that frequent PVCs lead to impairment of
LV function which can be reversible.14
Bogun et
al showed a positive impact of PVC suppression
versus a control group15
and all this has increased
our understanding about ‘PVC-­
induced cardiomy-
opathy’ (PIC).16
The diagnosis of PIC is based on the presence
of LV systolic dysfunction with frequent PVCs and
Learning objectives
►
► Care pathways for management of premature
ventricular complexes (PVCs) including
screening for structural heart disease, PVC
burden, cause and effect relation with left
ventricular dysfunction when present.
►
► Site of origin for common PVCs.
►
► Role of pharmacological therapy and catheter
ablation.
►
► Risk stratification for sudden cardiac death.
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absence of an alternate cause. If the chronology of
events is known and PVCs antedate the LV dysfunc-
tion, the diagnosis is more obvious. The diagnosis is
less obvious when the cardiomyopathy and frequent
PVCs are discovered simultaneously, especially if
the PVC burden is not very high. In such situations,
the diagnosis of PIC is made in hindsight when PVC
suppression by an ablation or AADs reverses the LV
dysfunction.
Patients with a pre-­
existing cardiomyopathy can
also have worsening of LV dysfunction with frequent
ventricular ectopy. In our opinion, this is a situation
where the ‘PVC aggravated cardiomyopathy’. The
existence of this phenomenon is supported by a
study of El Kadri et al17
showing that patients with
pre-­
existent cardiomyopathy and a PVC burden of
>5% had significant improvement if not normali-
sation of LV dysfunction by PVC suppression. The
PVCs in these patients most often originated within
or close to the scar. In contrast, there is currently
not much evidence to show LGE-­
CMR in patients
with PIC but in patients with a PVC-­
aggravated
cardiomyopathy, there is more obvious scarring.
This could be a significant physiological and prog-
nostic difference between the two.
What burden of PVCs predisposes to LV
dysfunction or worsening left ventricular ejec-
tion fraction (LVEF)? Baman et al showed that a
PVC burden of >24% was thought to best sepa-
rate the recovery of LV function after catheter
ablation.18
In general, a burden of 16%–26% has
been reported to be responsible for a PIC though
rarely a burden as low as 4% has been reported
as a culprit. We feel that it is reasonable to be
suspicious in a patient with a burden of 10% or
more with a drop in LVEF in most cases,19–21
and suppression of these can lead to partial or
complete reversal of cardiomyopathy.
What predisposes some patients to have a cardio-
myopathy and not others? The ‘burden of PVCs’
continues to be the most significant risk factor.
Other factors identified are a duration of the QRS
complex greater than 140 ms,22–25
an epicardial
origin,23 26
the duration for which PVCs have been
present, interpolated PVCs, asymptomatic status
(frequent PVCs may go unrecognised and untreated
longer), male sex and lack of circadian variability.
The odds ratio (OR) for developing PIC with very
frequent PVCs is about 4 in patients with a duration
of 30–60 months and 20 in patients with a duration
of over 60 months.27
PVC suppression in patients
with PIC results in a significant improvement or
normalisation of LVEF and, hence, likely to confer
survival benefit.
The proposed mechanisms for PIC are mechan-
ical interventricular dyssychrony, intraventricular
torsional changes, abnormal diastolic filling and
elevation of heart rates.28
In animal studies using
swine and canine models, a PIC develops in a few
weeks with pacing in a bigeminal pattern from
a programmed pacemaker.25 29 30
Pacing from
certain locations such as the epicardium resulted
in lower LV function as well as greater fibrosis in
the ventricle compared with pacing from the right
ventricular (RV) endocardium.28
At the cellular
level, the changes involve the calcium currents and
changes in the sarcoplasmic reticulum.31
MANAGEMENT OF PVCS
Diagnostic evaluation
Initial evaluation should include assessment for
symptoms, exacerbating and relieving factors,
signs of heart failure, ambulatory monitoring
to assess PVC burden, an ischaemia evaluation
to rule out coronary artery disease, an echocar-
diogram to assess the LV volumes, valves, LVEF
and RV function for any cardiomyopathy. We
prefer a 12-­
lead holter to assess PVC burden and
morphology analysis to determine whether the
PVCs are monomorphic or pleomorphic. This
helps define the best candidates for an ablation
as patients with one or two morphologies with a
reasonably high burden per focus are likely most
appropriate. A cardiac MRI is fairly reasonable
in patients with frequent PVCs and a cardio-
myopathy or in patients with suspicion for an
underlying SHD like an RV or LV cardiomyop-
athy, sarcoid or other infiltrative diseases. A posi-
tron emission tomography (PET) scan should be
considered in inflammatory disorders like sarcoid
where immunosuppressive therapy would be the
first-­
line therapy. An exercise stress test should be
considered when there is suspicion for catechol-
aminergic polymorphic ventricular tachycardia
(CPVT).
Proposed management algorithm
In figure 1, we propose a management algorithm for
patients with frequent PVCs. After the initial diag-
nostic evaluation, we first separate out patients who
have PVC-­
induced sustained ventricular arrhyth-
mias like VT or VF. PVC suppression is essen-
tial in patients where short coupled PVCs induce
sustained VT or VF.32 33
Due to the curative nature
and more durable results, we consider catheter
ablation as a first-­
line approach in these patients. If
unsuccessful, AAD therapy would be the next step.
Due to the continuing risk of VF in these patients,
an implantable cardioverter defibrillator (ICD) is
an important complementary need. Patients with
low risk sustained VT like those from the ventric-
ular outflow, fascicular VT and papillary muscle VT
without underlying SHD are at low risk of SCD and
usually do not need an ICD, but PVC/VT suppres-
sion with ablation or AADs is reasonable.
For other patients, it is useful differentiate those
who have normal LV function from those with LV
dysfunction. In patients with PIC or PVC aggra-
vated cardiomyopathy, guideline-­
directed medical
therapy for LV dysfunction should be initiated
regardless of PVC burden. The PVC burden could
be considered as low (<5%), moderate (5%–20%)
or high (>20%). This is based on the fact that
patients with a burden of 5% or more have shown
association with worsening LV function. A conser-
vative cut-­
off of 10% (instead of 5%) could also
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be considered reasonable as most patients with a
burden of less than 10% tolerate them well.
Given robust data for improvement of LV function
in patients where moderate or high burden of PVCs
is associated with LV dysfunction or heart failure,
strong consideration should be given to catheter
ablation or pharmacological suppression in these
patients. We usually try to avoid long-­
term AADs,
though there are no randomised data to compare
the two. Attention to secondary factors (electro-
lytes, metabolic, heart failure, ischaemia, etc) and
behavioural modifications (caffeine, alcohol, nico-
tine, stress and deconditioning) is important.
PVC suppression with ablation or AADs is a more
challenging decision for patients with preserved LV
function. The presence of symptoms and reduced
quality of life attributable to the PVCs is a reason-
able indication for PVC suppression. Palpitations,
skipped beats, haemodynamic instability with short
runs of non-­
sustained VT and chest discomfort
from post-­
PVC pauses are more specific symptoms.
Non-­
specific symptoms like fatigue, reduced effort
tolerance and shortness of breath are common, but
establishing a cause and effect relation with the PVCs
can be a challenging art of clinical medicine.
It is not proven whether using strain analysis as
a measure of LV function can help make decisions
about PVC suppression in patients with normal
LVEF, though there is evidence that PVC suppression
can improve measures of strain. In asymptomatic
patients or those with non-­
specific symptoms like
fatigue and with lack of alternative causes, a careful
and unbiased discussion of the risks and benefits of
an ablation or AADs could be considered in patients
with a high burden of PVCs. Many such patients
report improvement in energy levels and effort toler-
ance after ablation. A higher threshold for ablation
may exist for more difficult PVCs as those from the
papillary muscle or with epicardial origin. The other
option is close surveillance of LV function as up to
a third of patients with frequent PVCs develop LV
dysfunction with time.24
Figure 1  Flowchart showing a comprehensive algorithm to help in management of a patient with PVCs. BB, beta blocker; CaCB, calcium channel
blocker; CHF, congestive heart failure; CMR, cardiac magnetic resonance ; EF, ejection fraction; EKG, electrocardiography; EPS, electrophysiologic study;
FDG, fluorodeoxyglucose; HCM, hypertrophic cardiomyopathy; ICD, implantable cardioverter defibrillator; LGE, late gadolinium enhancement; LV, left
ventricle; LVEF, left ventricular ejection fraction; PET, positron emission tomography; PVC, premature ventricular complex; RV, right ventricular; SCD,
sudden cardiac death;VF, ventricular fibrillation;VT, ventricular tachycardia.
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Options for PVC suppression
Pharmacological therapy
Beta blockers (BBs) are often used as first-­
line
therapy.34 35
They do not affect myocardial ion chan-
nels but may help by suppression of sympathetically
driven excitation, negative inotropic effects and
slowing sinus rates. Calcium channel blockers may
help fascicular PVCs. However, either or the combi-
nation offers relief in less than 25% patients.36 37
Hamon and colleagues reported that patients with
fast HR-­
dependent PVCs (number of PVC higher
during daytime) had a favourable benefit from BBs,
whereas PVCs in patients without any correlation
with the mean HR did not improve significantly.
Interestingly, patients with slow HR-­
dependent
PVCs (number of PVC increased during night-­
time)
actually worsened with BBs.38
Class IC and class III AADs have reported better
suppression of PVCs compared with BBs. Class
IC drugs are avoided in patients with impaired
LV function and SHD because of the increased
mortality seen in the Cardiac Arrhythmia Suppres-
sion Trial9
but may offer relief in patients without
SHD. The use of class IC AADs in patients with
PIC could become a consideration as studies have
shown a significant improvement in PVC burden
(36% down to 10%) and LVEF (37% up to 49%)
with these drugs.37
We may need to refine the role
of these drugs in the modern era with the avail-
ability of the LGE-­
CMR.
Among class III AADs, amiodarone reduced
PVC burden and the risk of arrhythmic deaths in
the EMIAT and CAMIAT trials. Amiodarone can
be used for symptom and PVC suppression in
these patients but offers no survival benefit. It had
shown improvement in arrhythmic deaths, but this
was likely offset by an increase in non-­
arrhythmic
deaths.10 11
In patients with PIC, the CHF-­STAT trial
showed reduction in PVC burden with amiodarone
in up to 69% patients, but the discontinuation rate
was as high as 27%.39
Catheter ablation
Many advances in catheter ablation for ventricular
arrhythmias have lowered threshold for invasive
therapy. Accurate 3D mapping systems, epicardial
access, irrigated tip ablation catheters, contact force
assessment by catheter tips, use of intracardiac
echo and image integration have revolutionised
this field. Catheter ablation can be curative, but the
potential benefit must be evaluated against the risk
of major complications as vascular injury, cardiac
tamponade, coronary artery injury or stroke;
overall in the range of 1%–3%.40
Assessment for
ablation includes understanding of symptoms, heart
failure status, LV function, risks of sustained VT/VF,
haemodynamic compromise with the arrhythmia
and a careful assessment of the EKG to assess the
site of origin of the PVCs and surrounding struc-
tures to assess risk of collateral damage.
EKG assessment for site of origin
In most patients with PVCs without SHD, the under-
lying mechanism is focal abnormal automaticity or
triggered activity. Activation occurs from the site of
origin and propagates normal healthy myocardium
to present characteristic EKG morphology from
that site. Numerous reports have been published
to predict sites of origin of PVCs,41–44
and the
common morphologies are summarised in table 1.
The outflow tract represents the most common
origin for idiopathic PVCs. The vast majority orig-
inate from the anterior and superior septal aspect
of the right ventricular outflow tract (RVOT). In
15% of patients, the arrhythmia originates from
the left ventricular outflow tract and may be best
approached from the aortic cusps.45
PVCs may often
originate from an epicardial site and EKG charac-
teristics can help predict an epicardial origin.46
Mapping and ablation
The favoured technique for successful ablation
entails locating the site of earliest intracardiac acti-
vation, commonly known as ‘Activation mapping’.
‘Pace mapping’ may be used when the PVC burden
is low. In this technique, the mapping catheter is
advanced to the area of interest and pacing is
performed to achieve an identical match of the
surface QRS. Activation mapping is more reliable
and the intracardiac signal at the site of successful
ablation usually precedes the onset of QRS by about
25–30 
ms or more. Pace mapping is less reliable
but may be useful if the PVC burden during the
procedure is not high enough to facilitate activa-
tion mapping. Figures 2 and 3 demonstrate the use
of activation and pace mapping, respectively in a
Table 1  Electrocardiography patterns for common PVCs (usually typical)
Site of PVC origin Pattern in V1 Axis Other features
RVOT free wall LBBB Inferior axis QS in V1, transition V4–V5 Notching in inferior leads
RVOT septum LBBB Inferior axis QS in V1, transition V3–V4, narrower QRS, notching absent
Para Hisian LBBB or RBBB depending
on right or left exit
Inferior axis PVCs are narrow, polarities often similar to that of QRS in sinus rhythm with
subtle differences
LVOT including aortic cusp and LV
summit
LBBB or RBBB Inferior axis rS, qR or R in V1,V2 or V3 transition, maximum deflection index >0.55 from
LV summit
Posterior fascicle RBBB Left superior axis Can often present as VT
Anterolateral papillary muscle RBBB Right superior or inferior axis QRS may be narrow
LBBB, Left Bundle Branch Block; LV, Left Ventricular; LVOT, Left Ventricular Outflow Tract
; PVC, Premature Ventricular Complex; RBBB, Right Bundle Branch Block; RVOT, Right Ventricular Outflow Tract
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patient with frequent PVCs that were successfully
mapped and ablated from the right coronary cusp.
Figure 4 shows successful elimination of the PVCs
4.6 seconds after the start of delivery of radiofre-
quency energy.
Success for PVC ablation can vary significantly
based on the site of origin and approachability of
the focus. A recent multicenter study47
showed
overall success rate of 85% with a complication
rate of about 2.4%. The predictors of success were
Figure 2  Activation mapping: 12-­
lead electrocardiography (leads labelled on the left margin) at 100 mm/s in a patient with frequent PVCs.The
PVC has an LBBB (left bundle branch block) -like pattern, early transition in the precordial leads with a left inferior axis.The distal electrode on the
mapping catheter (maps 1 and 2) located in the right coronary cusp shows an activation signal during the PVC.The first vertical line shows the
onset of the local electrogram, which precedes the onset of the surface QRS (shown by the second vertical line) by 35 ms. PVC, premature ventricular
complex.
Figure 3  Pace mapping: 12-­
lead electrocardiography at a 50 mm/s with the mapping catheter at the same location as in figure 2.The first four
complexes show paced beats from this location as identified by the pacing spikes preceding the QRS complex.After cessation of pacing, there is
normal sinus rhythm with a single spontaneous PVC.The paced morphology of the QRS shows a near-­
perfect pace match (96% with software) with
the spontaneous clinical PVC when compared on the 12 surface leads. PVC, premature ventricular complex.
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an origin from the RVOT and presence of a single
morphology. The predictors for failure include
epicardial or papillary muscle origin and presence
of multiple morphologies. Successful ablation of
PVCs in patients with PIC is usually associated with
either normalisation of LV function or an improve-
ment in the LV ejection fraction by over 10%–15%.
In the study, the LVEF improved by more than
10% in 67% of patients, by 1%–10% in 18% and
no improvement was seen in 15% of patients.
Understanding of these data enhances our ability
to discuss the risks/benefits of PVC ablation with
patients and individualise treatment based on their
symptoms, LV function and preference.
PVCS AND RISK OF SCD
In general, PVCs in the absence of any SHD have
a benign prognosis, especially when monomor-
phic and from typical sites like the outflow tract,
papillary muscles and the LV fascicles. Certain
factors may indicate that the PVCs are less likely
to be benign, and these are mentioned in table 2.
These patients may need additional surveillance or
attention.
Patients with PVC-­induced VF (often associated
with short coupled PVCs) continue to be at high
risk for subsequent return of PVCs even after a
successful ablation or to have PVCs from other foci.
They merit implantation of a defibrillator to reduce
the risk of SCD. Such PVCs can rarely be seen from
the outflow tract or often from the injured Purkinje
tissues after an MI or coronary bypass surgery. Often
times, patients with PVCs from sites like the RVOT,
fascicles and papillary muscles may be associated
with non-­
sustained or sustained monomorphic VT
of similar morphology. These patients usually do
not have any SHD or LGE-­
CMR and tend to have
a benign prognosis. Most often, they are not at an
increased risk of SCD. The arrhythmias can be well
suppressed with an ablation or pharmacological
therapy and a defibrillator can be avoided.
In patients with PVCs and a cardiomyopathy
(typically greater than 5%–10% 
burden), the
PVC burden is the strongest predictor for devel-
opment of LV dysfunction. Hence, in patients
with PIC or PVC-­aggravated cardiomyopathy, risk
stratification for SCD should be done after best
attempts at reducing the PVC burden and appro-
priate guideline-­
directed medical therapy has been
instituted for a while (usually at least 3 months).
A defibrillator would be reasonable if the LV ejec-
tion fraction continues to be low (usually ≤35%)
despite the aforementioned efforts.
Conventionally, the utility of an electrophysio-
logical study (EPS) has not been favoured for risk
stratification in patients with non-­
ischaemic cardio-
myopathy. Recent data have shown some promise of
programmed stimulation in patients with frequent
PVCs and LV dysfunction in the presence of LGE-­
CMR. A combination of SHD as detected by LGE-­
CMR and an inducible VT at EPS has been found to
Figure 4  Ablation: the patient is having PVCs in a quadrigeminal pattern as seen on the 12-­
lead electrocardiography at 10 mm/s starting on the
left portion of the screen. Delivery of radiofrequency energy starts at the first vertical bar and results in prompt termination of the PVCs which are
last seen once at 4.6 s after the onset of ablation, and there is subsequently no PVCs on the right side of the screen.After completion of ablation, the
patient did not have any clinical PVCs during the procedure or on follow-­
up. PVC, premature ventricular complex.
Table 2  Factors predicting PVCs as potentially non-­
benign or atypical
Clinical Existence of any underlying structural heart disease
Existence of late gadolinium enhancement in the right or left ventricle on CMR
ECG features Frequent PVCs greater than 10% burden
Wider QRS duration (greater than 140 ms)
Multiple morphologies of PVCs (pleomorphic)
Atypical sites of origin
Short coupling interval predisposing to an ‘R on T’ phenomenon
Epicardial origin
CMR, Cardiac Magnetic Resonance; PVC, premature ventricular complex.
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independently predict risk of an adverse outcome
and help select patients who may benefit from an
ICD in patients with frequent PVCs and LV dysfunc-
tion. Further studies in larger number of patients,
preferably in randomised controlled trials will be
needed to substantiate these data.48
Risk stratifica-
tion should be further individualised for inheritable
disorders like arrhythmogenic RV cardiomyopathy,
Brugada syndrome, long QT syndrome, hypertro-
phic cardiomyopathy and CPVT as per their indi-
vidual guidelines.
CONCLUSION
The majority of PVCs in daily practice are benign,
especially in the absence of SHD. An EKG, echo,
stress test, CMR and PET scan are appropriate
tools to establish any SHD based on the appro-
priate clinical setting. Ambulatory monitoring is
best to assess PVC burden, morphology analysis
and to establish cause and effect relation of the
symptoms to the PVCs. In asymptomatic patients
with normal LV function and absence of SHD,
careful surveillance is appropriate. PVC-­
induced
sustained ventricular arrhythmias, PIC or PVC-­
aggravated cardiomyopathy are best treated with
PVC suppression. Catheter ablation may be a
reasonable first-­
line therapy in these patients.
Randomised controlled trials are lacking, but
the 2017 American Heart Association/American
College of Cardiology/Heart Rhythm Society
Ventricular Arrhythmia guidelines support
catheter ablation as a class I recommenda-
tion in patients with frequent PVCs causing LV
dysfunction where AADs are not effective, toler-
ated or preferred.34
Catheter ablation and AADs
are reasonable in symptomatic patients with
normal LV function. Risk stratification for SCD
should be based on objective criteria for the
respective clinical setting. There may be a role for
programmed stimulation in patients with LGE-­
CMR, but more data are needed to support it as
the standard of care.
Twitter Mandeep Bhargava @MandeepBhargava
Contributors  KH and MB contributed to the preparation of the
manuscript. MB is the senior and corresponding author who has
made all the critical revisions of the intellectual content, approved
and edited the final version, and made all the questions and
explanations.
Funding  The authors have not declared a specific grant for this
research from any funding agency in the public, commercial or
not-­for-­profit sectors.
Competing interests  None declared.
Patient and public involvement  Patients and/or the public
were not involved in the design, conduct, reporting or dissemination
plans of this research.
Patient consent for publication  Not required.
Provenance and peer review  Commissioned; internally peer
reviewed.
Author note  References which include a * are considered to be
key references.
ORCID iD
Mandeep Bhargava http://​orcid.​org/​0000-​0002-​8287-​8014
REFERENCES
	 1	 Cantillon DJ. Evaluation and management of premature ventricular
complexes. Cleve Clin J Med 2013;80:377–87.
	 2	 Ng GA.Treating patients with ventricular ectopic beats. Heart
2006;92:1707–12.
	 3	 Simpson RJ, Cascio WE, Schreiner PJ, et al. Prevalence of
premature ventricular contractions in a population of African
American and white men and women: the Atherosclerosis risk in
communities (ARIC) study. Am Heart J 2002;143:535–40.
	 4	 Gaita F, Giustetto C, Di Donna P, et al. Long-­
Term follow-­
up of
right ventricular monomorphic extrasystoles. J Am Coll Cardiol
2001;38:364–70.
	 5	 Kennedy HL,Whitlock JA, Sprague MK, et al. Long-­Term follow-­up
of asymptomatic healthy subjects with frequent and complex
ventricular ectopy. N Engl J Med 1985;312:193–7.
	 6	 van Huls van Taxis CFB, Piers SRD, de Riva Silva M, et al. Fatigue as
presenting symptom and a high burden of premature ventricular
contractions are independently associated with increased
ventricular wall stress in patients with normal left ventricular
function. Circ Arrhythm Electrophysiol 2015;8:1452–9.
	 7	 Bigger JT, Fleiss JL, Kleiger R, et al.The relationships among
ventricular arrhythmias, left ventricular dysfunction, and
mortality in the 2 years after myocardial infarction. Circulation
1984;69:250–8.
	 8	 Mukharji J, Rude RE, Poole WK, et al. Risk factors for sudden death
after acute myocardial infarction: two-­
year follow-­
up. Am J Cardiol
1984;54:31–6.
	 9	 Cardiac Arrhythmia Suppression Trial (CAST) Investigators.
Preliminary report: effect of encainide and flecainide on mortality
in a randomized trial of arrhythmia suppression after myocardial
infarction. N Engl J Med 1989;321:406–12.
	 10	 Julian DG, Camm AJ, Frangin G, et al. Randomised trial of effect
of amiodarone on mortality in patients with left-­
ventricular
dysfunction after recent myocardial infarction: EMIAT. European
myocardial infarct amiodarone trial Investigators. Lancet
1997;349:667–74.
	 11	 Cairns JA, Connolly SJ, Roberts R, et al. Randomised trial of
outcome after myocardial infarction in patients with frequent
CME credits for Education in Heart
Education in Heart articles are accredited for CME by various providers.To
answer the accompanying multiple choice questions (MCQs) and obtain your
credits, click on the 'Take the Test' link on the online version of the article.
The MCQs are hosted on BMJ Learning.All users must complete a one-­
time
registration on BMJ Learning and subsequently log in on every visit using their
username and password to access modules and their CME record.Accreditation
is only valid for 2 years from the date of publication. Printable CME certificates
are available to users that achieve the minimum pass mark.
Key messages
►
► Isolated monomorphic premature ventricular complexes (PVCs) without
structural heart disease are generally benign.
►
► Frequent PVCs can cause reversible cardiomyopathy or aggravate an existing
cardiomyopathy.
►
► Short coupled PVCs can trigger sustained ventricular fibrillation.These are
often from the Purkinje tissue or rarely the outflow tract.
►
► Beta blockers are considered first-­
line therapy but have low efficacy.
Catheter ablation and AADs are reasonable to suppress PVCs in appropriate
patients.
►
► Ablation is often curative and success depends on location and accessibility
of PVCs.
►
► Implantable defibrillators are reasonable in patients at higher risk of sudden
cardiac death.
on
August
14,
2021
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India:BMJ-PG
Sponsored.
Protected
by
copyright.
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Heart:
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published
as
10.1136/heartjnl-2020-318628
on
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July
2021.
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8 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628
Education in Heart
or repetitive ventricular premature depolarisations: CAMIAT.
Canadian amiodarone myocardial infarction arrhythmia trial
Investigators. Lancet 1997;349:675–82.
	 12	 Oebel S, Dinov B,Arya A, et al. ECG morphology of premature
ventricular contractions predicts the presence of myocardial
fibrotic substrate on cardiac magnetic resonance imaging
in patients undergoing ablation. J Cardiovasc Electrophysiol
2017;28:1316–23.
	
*13	 Bhargava M, Niebauer MJ, Chung MK, et al. Improvement of
ventricular function following catheter ablation of frequent
ventricular arrhythmias. J Am Coll Cardiol 2003;41:108A.
	 14	 Duffee DF, Shen WK, Smith HC. Suppression of frequent
premature ventricular contractions and improvement of left
ventricular function in patients with presumed idiopathic dilated
cardiomyopathy. Mayo Clin Proc 1998;73:430–3.
	
*15	 Bogun F, Crawford T, Reich S, et al. Radiofrequency ablation of
frequent, idiopathic premature ventricular complexes: comparison
with a control group without intervention. Heart Rhythm
2007;4:863–7.
	
*16	 Latchamsetty R, Bogun F. Premature ventricular complex-­
induced
cardiomyopathy. JACC Clin Electrophysiol 2019;5:537–50.
	
*17	 El Kadri M,Yokokawa M, Labounty T, et al. Effect of ablation
of frequent premature ventricular complexes on left ventricular
function in patients with nonischemic cardiomyopathy. Heart
Rhythm 2015;12:706–13.
	 18	 Baman TS, Lange DC, Ilg KJ, et al. Relationship between burden
of premature ventricular complexes and left ventricular function.
Heart Rhythm 2010;7:865–9.
	 19	 Penela D,Van Huls Van Taxis C,Van Huls Vans Taxis C, et al.
Neurohormonal, structural, and functional recovery pattern
after premature ventricular complex ablation is independent of
structural heart disease status in patients with depressed left
ventricular ejection fraction: a prospective multicenter study. J Am
Coll Cardiol 2013;62:1195–202.
	 20	 Yarlagadda RK, Iwai S, Stein KM, et al. Reversal of cardiomyopathy
in patients with repetitive monomorphic ventricular ectopy
originating from the right ventricular outflow tract. Circulation
2005;112:1092–7.
	 21	 Dukes JW, Dewland TA,Vittinghoff E, et al.Ventricular ectopy
as a predictor of heart failure and death. J Am Coll Cardiol
2015;66:101–9.
	 22	 Del Carpio Munoz F, Syed FF, Noheria A, et al. Characteristics
of premature ventricular complexes as correlates of reduced
left ventricular systolic function: study of the burden, duration,
coupling interval, morphology and site of origin of PVCs. J
Cardiovasc Electrophysiol 2011;22:791–8.
	 23	 Yokokawa M, Kim HM, Good E, et al. Impact of QRS duration of
frequent premature ventricular complexes on the development of
cardiomyopathy. Heart Rhythm 2012;9:1460–4.
	 24	 Carballeira Pol L, Deyell MW, Frankel DS, et al.Ventricular
premature depolarization QRS duration as a new marker of risk for
the development of ventricular premature depolarization-­
induced
cardiomyopathy. Heart Rhythm 2014;11:299–306.
	 25	 Deyell MW, Park K-­
M, Han Y, et al. Predictors of recovery of left
ventricular dysfunction after ablation of frequent ventricular
premature depolarizations. Heart Rhythm 2012;9:1465–72.
	 26	 Sadron Blaye-­
Felice M, Hamon D, Sacher F, et al. Premature
ventricular contraction-­
induced cardiomyopathy: related
clinical and electrophysiologic parameters. Heart Rhythm
2016;13:103–10.
	 27	 Beaufort-­
Krol GCM, Dijkstra SSP, Bink-­
Boelkens MTE. Natural
history of ventricular premature contractions in children with
a structurally normal heart: does origin matter? Europace
2008;10:998–1003.
	 28	 Walters TE, Rahmutula D, Szilagyi J, et al. Left ventricular
Dyssynchrony predicts the cardiomyopathy associated
with premature ventricular contractions. J Am Coll Cardiol
2018;72:2870–82.
	 29	 Huizar JF, Kaszala K, Potfay J, et al. Left ventricular systolic
dysfunction induced by ventricular ectopy: a novel model for
premature ventricular contraction-­
induced cardiomyopathy. Circ
Arrhythm Electrophysiol 2011;4:543–9.
	 30	 Tanaka Y, Rahmutula D, Duggirala S, et al. Diffuse fibrosis leads
to a decrease in unipolar voltage: validation in a swine model of
premature ventricular contraction-­
induced cardiomyopathy. Heart
Rhythm 2016;13:547–54.
	 31	 Wang Y, Eltit JM, Kaszala K, et al. Cellular mechanism of
premature ventricular contraction-­
induced cardiomyopathy. Heart
Rhythm 2014;11:2064–72.
	*32	 Marrouche NF,Verma A,Wazni O, et al. Mode of initiation and
ablation of ventricular fibrillation storms in patients with ischemic
cardiomyopathy. J Am Coll Cardiol 2004;43:1715–20.
	 33	 Sacher F,Victor J, Hocini M, et al. [Characterization of premature
ventricular contraction initiating ventricular fibrillation]. Arch Mal
Coeur Vaiss 2005;98:867–73.
	 34	 Al-­
Khatib SM, Stevenson WG,Ackerman MJ, et al. 2017 AHA/
ACC/HRS guideline for management of patients with ventricular
arrhythmias and the prevention of sudden cardiac death: a report
of the American College of Cardiology/American heart association
Task force on clinical practice guidelines and the heart rhythm
Society. J Am Coll Cardiol 2018;72:e91–220.
	 35	 Priori SG, Blomström-­
Lundqvist C, Mazzanti A, et al. 2015 ESC
Guidelines for the management of patients with ventricular
arrhythmias and the prevention of sudden cardiac death:The
Task Force for the Management of Patients with Ventricular
Arrhythmias and the Prevention of Sudden Cardiac Death of the
European Society of Cardiology (ESC)Endorsed by:Association for
European Paediatric and Congenital Cardiology (AEPC). Europace
2015;17:1601–87.
	 36	 Krittayaphong R, Bhuripanyo K, Punlee K, et al. Effect of atenolol
on symptomatic ventricular arrhythmia without structural heart
disease: a randomized placebo-­
controlled study. Am Heart J
2002;144:1–5.
	 37	 Hyman MC, Mustin D, Supple G, et al. Class IC antiarrhythmic
drugs for suspected premature ventricular contraction-­
induced
cardiomyopathy. Heart Rhythm 2018;15:159–63.
	 38	 Hamon D, Swid MA, Rajendran PS, et al. Premature ventricular
contraction diurnal profiles predict distinct clinical characteristics
and beta-­
blocker responses. J Cardiovasc Electrophysiol
2019;30:836–43.
	 39	 Singh SN, Fletcher RD, Fisher SG, et al.Amiodarone in patients
with congestive heart failure and asymptomatic ventricular
arrhythmia. survival trial of antiarrhythmic therapy in congestive
heart failure. N Engl J Med 1995;333:77–82.
	 40	 Peichl P,Wichterle D, Pavlu L, et al. Complications of catheter
ablation of ventricular tachycardia: a single-­
center experience. Circ
Arrhythm Electrophysiol 2014;7:684–90.
	 41	 Yamada T, Doppalapudi H, McElderry HT, et al. Idiopathic
ventricular arrhythmias originating from the papillary
muscles in the left ventricle: prevalence, electrocardiographic
and electrophysiological characteristics, and results of the
radiofrequency catheter ablation. J Cardiovasc Electrophysiol
2010;21:62–9.
	 42	 Ouyang F, Mathew S,Wu S, et al.Ventricular arrhythmias arising
from the left ventricular outflow tract below the aortic sinus cusps:
mapping and catheter ablation via transseptal approach and
electrocardiographic characteristics. Circ Arrhythm Electrophysiol
2014;7:445–55.
	 43	 Yamada T, Doppalapudi H, Maddox WR, et al. Prevalence and
electrocardiographic and electrophysiological characteristics of
idiopathic ventricular arrhythmias originating from intramural foci
in the left ventricular outflow tract. Circ Arrhythm Electrophysiol
2016;9.
	 44	 Betensky BP, Park RE, Marchlinski FE, et al.The V(2) transition
ratio: a new electrocardiographic criterion for distinguishing left
from right ventricular outflow tract tachycardia origin. J Am Coll
Cardiol 2011;57:2255–62.
	 45	 Bala R, Garcia FC, Hutchinson MD, et al. Electrocardiographic and
electrophysiologic features of ventricular arrhythmias originating
from the right/left coronary cusp commissure. Heart Rhythm
2010;7:312–22.
	 46	 Vallès E, Bazan V, Marchlinski FE. ECG criteria to identify epicardial
ventricular tachycardia in nonischemic cardiomyopathy. Circ
Arrhythm Electrophysiol 2010;3:63–71.
	
*47	 Latchamsetty R,Yokokawa M, Morady F, et al. Multicenter
Outcomes for Catheter Ablation of Idiopathic Premature
Ventricular Complexes. JACC Clin Electrophysiol 2015;1:116–23.
	 48	 Yokokawa M, Siontis KC, Kim HM, et al.Value of cardiac
magnetic resonance imaging and programmed ventricular
stimulation in patients with frequent premature ventricular
complexes undergoing radiofrequency ablation. Heart Rhythm
2017;14:1695–701.
on
August
14,
2021
at
India:BMJ-PG
Sponsored.
Protected
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copyright.
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Management of premature ventricular complexes

  • 1.    1 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Management of premature ventricular complexes Koji Higuchi, Mandeep Bhargava  ‍ ‍ Education in Heart To cite: Higuchi K, Bhargava M. Heart Epub ahead of print: [please include Day Month Year]. doi:10.1136/ heartjnl-2020-318628 Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio, USA Correspondence to Dr Mandeep Bhargava, Cardiovascular Medicine Desk J2-2, Cleveland Clinic, Cleveland, OH 44195, USA; ​bhargam@​ccf.​org © Author(s) (or their employer(s)) 2021. No commercial re-­ use. See rights and permissions. Published by BMJ. INTRODUCTION Premature ventricular complexes (PVCs) are the most common arrhythmias in daily practice. At the cellular level, ventricular myocytes spontaneously depolarise to create an extrasystole ‘out of sync’ with the cardiac cycle.1 The prevalence depends on the characteristics and comorbidities of the popula- tion, the method by which the population is studied and the duration of observation. PVCs have been described in 1% of clinically normal people on stan- dard electrocardiography (EKG) and 40%–75% of healthy people assessed by short-­ term ambulatory monitoring.2 Atherosclerosis Risk in Communities, a large population-­ based study of 15 792 Americans aged 45–65 years, demonstrated a higher preva- lence of PVCs with age, structural heart disease (SHD), hypertension, African–American ethnicity, male sex and lower education.3 PVCs are generally benign in patients without SHD.4 5 However, PVCs can be a trigger for life-­ threating arrhythmias such as ventricular tachy- cardia (VT) and ventricular fibrillation (VF) causing sudden cardiac death (SCD), especially in patients post-­ myocardial infarction (MI). Risk stratification for PVCs varies in specific populations with under- lying cardiac disease, family history, genetic vari- ants and sometimes coupling interval. The differing implications with these variables is the basis of this review. SYMPTOMS The symptoms of PVCs are variable. Patients often have palpitations described as fluttering, pounding, skipping beats or often a strange sensation in the neck. Others may have fatigue, shortness of breath or change of stamina and endurance. The increased stroke volume of the post-­ PVC beat may cause chest discomfort. Non-­ sustained or sustained episodes of VT may be associated with presyncope or syncope. In contrast, many patients are asymptomatic, sometimes even with bigeminal PVCs or non-­ sustained VT. Symptoms can often be non-­ specific when patients with frequent PVCs and even preserved left ventricular (LV) function may report a ‘vague fatigue’ associated with higher N-­ terminal pro B-­ type natriuretic peptide and circumferential end-­ systolic wall stress. These have been shown to resolve after a successful ablation.6 PVCS WITH AND WITHOUT SHD At the outset, one should establish whether PVCs exist in the presence or absence of SHD. Studies have shown that patients with frequent PVCs after MI have higher risk of mortality and SCD.7 8 Does PVC suppression in this situation help? The prospective Cardiac Arrhythmia Suppression Trial (CAST) randomised patients after an MI to PVC suppression with encainide, flecainide or placebo.9 Pharmacological PVC suppression had adverse effects on the treatment group by increasing mortality from arrhythmic and non-­ arrhythmic cardiac causes. This raised concerns for proar- rhythmic and negative inotropic properties of these agents, restraining use of class IC antiarrhythmic drugs (AADs) in patients with SHD. Amiodarone has been used for patients with frequent PVCs after MI in two prospec- tive randomised controlled trials, the European Myocardial Infarct Amiodarone Trial (EMIAT) and Canadian Amiodarone Myocardial Infarction Arrhythmia (CAMIAT) investigations. Both trials showed that amiodarone reduced the incidence of VF or arrhythmic death among survivors of acute MI with frequent PVCs but no reduction in all-­ cause mortality.10 11 Neither trial supported the prophylactic use of amiodarone in these patients but showed a rationale for its use for symptomatic PVCs or in patients with impaired LV function. EKG and echocardiography are most commonly used to screen for SHD. Stress testing, nuclear imaging and late gadolinium enhancement with cardiac MRI (LGE-­ CMR) are useful for further evaluation of ischaemia, inflammation and scars. Patients with pleomorphic PVC have a higher prev- alence of scarring.12 Most patients with low burden of monomorphic PVCs (generally <5%) in the absence of SHD have a fairly benign course. PVC-INDUCED CARDIOMYOPATHY We first shared our experience with PVC ablation in 23 patients showing positive impact of successful ablation on LV function in patients with frequent ventricular ectopy.13 Prior anecdotal studies had shown that frequent PVCs lead to impairment of LV function which can be reversible.14 Bogun et al showed a positive impact of PVC suppression versus a control group15 and all this has increased our understanding about ‘PVC-­ induced cardiomy- opathy’ (PIC).16 The diagnosis of PIC is based on the presence of LV systolic dysfunction with frequent PVCs and Learning objectives ► ► Care pathways for management of premature ventricular complexes (PVCs) including screening for structural heart disease, PVC burden, cause and effect relation with left ventricular dysfunction when present. ► ► Site of origin for common PVCs. ► ► Role of pharmacological therapy and catheter ablation. ► ► Risk stratification for sudden cardiac death. on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from
  • 2. 2 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Education in Heart absence of an alternate cause. If the chronology of events is known and PVCs antedate the LV dysfunc- tion, the diagnosis is more obvious. The diagnosis is less obvious when the cardiomyopathy and frequent PVCs are discovered simultaneously, especially if the PVC burden is not very high. In such situations, the diagnosis of PIC is made in hindsight when PVC suppression by an ablation or AADs reverses the LV dysfunction. Patients with a pre-­ existing cardiomyopathy can also have worsening of LV dysfunction with frequent ventricular ectopy. In our opinion, this is a situation where the ‘PVC aggravated cardiomyopathy’. The existence of this phenomenon is supported by a study of El Kadri et al17 showing that patients with pre-­ existent cardiomyopathy and a PVC burden of >5% had significant improvement if not normali- sation of LV dysfunction by PVC suppression. The PVCs in these patients most often originated within or close to the scar. In contrast, there is currently not much evidence to show LGE-­ CMR in patients with PIC but in patients with a PVC-­ aggravated cardiomyopathy, there is more obvious scarring. This could be a significant physiological and prog- nostic difference between the two. What burden of PVCs predisposes to LV dysfunction or worsening left ventricular ejec- tion fraction (LVEF)? Baman et al showed that a PVC burden of >24% was thought to best sepa- rate the recovery of LV function after catheter ablation.18 In general, a burden of 16%–26% has been reported to be responsible for a PIC though rarely a burden as low as 4% has been reported as a culprit. We feel that it is reasonable to be suspicious in a patient with a burden of 10% or more with a drop in LVEF in most cases,19–21 and suppression of these can lead to partial or complete reversal of cardiomyopathy. What predisposes some patients to have a cardio- myopathy and not others? The ‘burden of PVCs’ continues to be the most significant risk factor. Other factors identified are a duration of the QRS complex greater than 140 ms,22–25 an epicardial origin,23 26 the duration for which PVCs have been present, interpolated PVCs, asymptomatic status (frequent PVCs may go unrecognised and untreated longer), male sex and lack of circadian variability. The odds ratio (OR) for developing PIC with very frequent PVCs is about 4 in patients with a duration of 30–60 months and 20 in patients with a duration of over 60 months.27 PVC suppression in patients with PIC results in a significant improvement or normalisation of LVEF and, hence, likely to confer survival benefit. The proposed mechanisms for PIC are mechan- ical interventricular dyssychrony, intraventricular torsional changes, abnormal diastolic filling and elevation of heart rates.28 In animal studies using swine and canine models, a PIC develops in a few weeks with pacing in a bigeminal pattern from a programmed pacemaker.25 29 30 Pacing from certain locations such as the epicardium resulted in lower LV function as well as greater fibrosis in the ventricle compared with pacing from the right ventricular (RV) endocardium.28 At the cellular level, the changes involve the calcium currents and changes in the sarcoplasmic reticulum.31 MANAGEMENT OF PVCS Diagnostic evaluation Initial evaluation should include assessment for symptoms, exacerbating and relieving factors, signs of heart failure, ambulatory monitoring to assess PVC burden, an ischaemia evaluation to rule out coronary artery disease, an echocar- diogram to assess the LV volumes, valves, LVEF and RV function for any cardiomyopathy. We prefer a 12-­ lead holter to assess PVC burden and morphology analysis to determine whether the PVCs are monomorphic or pleomorphic. This helps define the best candidates for an ablation as patients with one or two morphologies with a reasonably high burden per focus are likely most appropriate. A cardiac MRI is fairly reasonable in patients with frequent PVCs and a cardio- myopathy or in patients with suspicion for an underlying SHD like an RV or LV cardiomyop- athy, sarcoid or other infiltrative diseases. A posi- tron emission tomography (PET) scan should be considered in inflammatory disorders like sarcoid where immunosuppressive therapy would be the first-­ line therapy. An exercise stress test should be considered when there is suspicion for catechol- aminergic polymorphic ventricular tachycardia (CPVT). Proposed management algorithm In figure 1, we propose a management algorithm for patients with frequent PVCs. After the initial diag- nostic evaluation, we first separate out patients who have PVC-­ induced sustained ventricular arrhyth- mias like VT or VF. PVC suppression is essen- tial in patients where short coupled PVCs induce sustained VT or VF.32 33 Due to the curative nature and more durable results, we consider catheter ablation as a first-­ line approach in these patients. If unsuccessful, AAD therapy would be the next step. Due to the continuing risk of VF in these patients, an implantable cardioverter defibrillator (ICD) is an important complementary need. Patients with low risk sustained VT like those from the ventric- ular outflow, fascicular VT and papillary muscle VT without underlying SHD are at low risk of SCD and usually do not need an ICD, but PVC/VT suppres- sion with ablation or AADs is reasonable. For other patients, it is useful differentiate those who have normal LV function from those with LV dysfunction. In patients with PIC or PVC aggra- vated cardiomyopathy, guideline-­ directed medical therapy for LV dysfunction should be initiated regardless of PVC burden. The PVC burden could be considered as low (<5%), moderate (5%–20%) or high (>20%). This is based on the fact that patients with a burden of 5% or more have shown association with worsening LV function. A conser- vative cut-­ off of 10% (instead of 5%) could also on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from
  • 3. 3 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Education in Heart be considered reasonable as most patients with a burden of less than 10% tolerate them well. Given robust data for improvement of LV function in patients where moderate or high burden of PVCs is associated with LV dysfunction or heart failure, strong consideration should be given to catheter ablation or pharmacological suppression in these patients. We usually try to avoid long-­ term AADs, though there are no randomised data to compare the two. Attention to secondary factors (electro- lytes, metabolic, heart failure, ischaemia, etc) and behavioural modifications (caffeine, alcohol, nico- tine, stress and deconditioning) is important. PVC suppression with ablation or AADs is a more challenging decision for patients with preserved LV function. The presence of symptoms and reduced quality of life attributable to the PVCs is a reason- able indication for PVC suppression. Palpitations, skipped beats, haemodynamic instability with short runs of non-­ sustained VT and chest discomfort from post-­ PVC pauses are more specific symptoms. Non-­ specific symptoms like fatigue, reduced effort tolerance and shortness of breath are common, but establishing a cause and effect relation with the PVCs can be a challenging art of clinical medicine. It is not proven whether using strain analysis as a measure of LV function can help make decisions about PVC suppression in patients with normal LVEF, though there is evidence that PVC suppression can improve measures of strain. In asymptomatic patients or those with non-­ specific symptoms like fatigue and with lack of alternative causes, a careful and unbiased discussion of the risks and benefits of an ablation or AADs could be considered in patients with a high burden of PVCs. Many such patients report improvement in energy levels and effort toler- ance after ablation. A higher threshold for ablation may exist for more difficult PVCs as those from the papillary muscle or with epicardial origin. The other option is close surveillance of LV function as up to a third of patients with frequent PVCs develop LV dysfunction with time.24 Figure 1  Flowchart showing a comprehensive algorithm to help in management of a patient with PVCs. BB, beta blocker; CaCB, calcium channel blocker; CHF, congestive heart failure; CMR, cardiac magnetic resonance ; EF, ejection fraction; EKG, electrocardiography; EPS, electrophysiologic study; FDG, fluorodeoxyglucose; HCM, hypertrophic cardiomyopathy; ICD, implantable cardioverter defibrillator; LGE, late gadolinium enhancement; LV, left ventricle; LVEF, left ventricular ejection fraction; PET, positron emission tomography; PVC, premature ventricular complex; RV, right ventricular; SCD, sudden cardiac death;VF, ventricular fibrillation;VT, ventricular tachycardia. on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from
  • 4. 4 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Education in Heart Options for PVC suppression Pharmacological therapy Beta blockers (BBs) are often used as first-­ line therapy.34 35 They do not affect myocardial ion chan- nels but may help by suppression of sympathetically driven excitation, negative inotropic effects and slowing sinus rates. Calcium channel blockers may help fascicular PVCs. However, either or the combi- nation offers relief in less than 25% patients.36 37 Hamon and colleagues reported that patients with fast HR-­ dependent PVCs (number of PVC higher during daytime) had a favourable benefit from BBs, whereas PVCs in patients without any correlation with the mean HR did not improve significantly. Interestingly, patients with slow HR-­ dependent PVCs (number of PVC increased during night-­ time) actually worsened with BBs.38 Class IC and class III AADs have reported better suppression of PVCs compared with BBs. Class IC drugs are avoided in patients with impaired LV function and SHD because of the increased mortality seen in the Cardiac Arrhythmia Suppres- sion Trial9 but may offer relief in patients without SHD. The use of class IC AADs in patients with PIC could become a consideration as studies have shown a significant improvement in PVC burden (36% down to 10%) and LVEF (37% up to 49%) with these drugs.37 We may need to refine the role of these drugs in the modern era with the avail- ability of the LGE-­ CMR. Among class III AADs, amiodarone reduced PVC burden and the risk of arrhythmic deaths in the EMIAT and CAMIAT trials. Amiodarone can be used for symptom and PVC suppression in these patients but offers no survival benefit. It had shown improvement in arrhythmic deaths, but this was likely offset by an increase in non-­ arrhythmic deaths.10 11 In patients with PIC, the CHF-­STAT trial showed reduction in PVC burden with amiodarone in up to 69% patients, but the discontinuation rate was as high as 27%.39 Catheter ablation Many advances in catheter ablation for ventricular arrhythmias have lowered threshold for invasive therapy. Accurate 3D mapping systems, epicardial access, irrigated tip ablation catheters, contact force assessment by catheter tips, use of intracardiac echo and image integration have revolutionised this field. Catheter ablation can be curative, but the potential benefit must be evaluated against the risk of major complications as vascular injury, cardiac tamponade, coronary artery injury or stroke; overall in the range of 1%–3%.40 Assessment for ablation includes understanding of symptoms, heart failure status, LV function, risks of sustained VT/VF, haemodynamic compromise with the arrhythmia and a careful assessment of the EKG to assess the site of origin of the PVCs and surrounding struc- tures to assess risk of collateral damage. EKG assessment for site of origin In most patients with PVCs without SHD, the under- lying mechanism is focal abnormal automaticity or triggered activity. Activation occurs from the site of origin and propagates normal healthy myocardium to present characteristic EKG morphology from that site. Numerous reports have been published to predict sites of origin of PVCs,41–44 and the common morphologies are summarised in table 1. The outflow tract represents the most common origin for idiopathic PVCs. The vast majority orig- inate from the anterior and superior septal aspect of the right ventricular outflow tract (RVOT). In 15% of patients, the arrhythmia originates from the left ventricular outflow tract and may be best approached from the aortic cusps.45 PVCs may often originate from an epicardial site and EKG charac- teristics can help predict an epicardial origin.46 Mapping and ablation The favoured technique for successful ablation entails locating the site of earliest intracardiac acti- vation, commonly known as ‘Activation mapping’. ‘Pace mapping’ may be used when the PVC burden is low. In this technique, the mapping catheter is advanced to the area of interest and pacing is performed to achieve an identical match of the surface QRS. Activation mapping is more reliable and the intracardiac signal at the site of successful ablation usually precedes the onset of QRS by about 25–30  ms or more. Pace mapping is less reliable but may be useful if the PVC burden during the procedure is not high enough to facilitate activa- tion mapping. Figures 2 and 3 demonstrate the use of activation and pace mapping, respectively in a Table 1  Electrocardiography patterns for common PVCs (usually typical) Site of PVC origin Pattern in V1 Axis Other features RVOT free wall LBBB Inferior axis QS in V1, transition V4–V5 Notching in inferior leads RVOT septum LBBB Inferior axis QS in V1, transition V3–V4, narrower QRS, notching absent Para Hisian LBBB or RBBB depending on right or left exit Inferior axis PVCs are narrow, polarities often similar to that of QRS in sinus rhythm with subtle differences LVOT including aortic cusp and LV summit LBBB or RBBB Inferior axis rS, qR or R in V1,V2 or V3 transition, maximum deflection index >0.55 from LV summit Posterior fascicle RBBB Left superior axis Can often present as VT Anterolateral papillary muscle RBBB Right superior or inferior axis QRS may be narrow LBBB, Left Bundle Branch Block; LV, Left Ventricular; LVOT, Left Ventricular Outflow Tract ; PVC, Premature Ventricular Complex; RBBB, Right Bundle Branch Block; RVOT, Right Ventricular Outflow Tract . on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from
  • 5. 5 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Education in Heart patient with frequent PVCs that were successfully mapped and ablated from the right coronary cusp. Figure 4 shows successful elimination of the PVCs 4.6 seconds after the start of delivery of radiofre- quency energy. Success for PVC ablation can vary significantly based on the site of origin and approachability of the focus. A recent multicenter study47 showed overall success rate of 85% with a complication rate of about 2.4%. The predictors of success were Figure 2  Activation mapping: 12-­ lead electrocardiography (leads labelled on the left margin) at 100 mm/s in a patient with frequent PVCs.The PVC has an LBBB (left bundle branch block) -like pattern, early transition in the precordial leads with a left inferior axis.The distal electrode on the mapping catheter (maps 1 and 2) located in the right coronary cusp shows an activation signal during the PVC.The first vertical line shows the onset of the local electrogram, which precedes the onset of the surface QRS (shown by the second vertical line) by 35 ms. PVC, premature ventricular complex. Figure 3  Pace mapping: 12-­ lead electrocardiography at a 50 mm/s with the mapping catheter at the same location as in figure 2.The first four complexes show paced beats from this location as identified by the pacing spikes preceding the QRS complex.After cessation of pacing, there is normal sinus rhythm with a single spontaneous PVC.The paced morphology of the QRS shows a near-­ perfect pace match (96% with software) with the spontaneous clinical PVC when compared on the 12 surface leads. PVC, premature ventricular complex. on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from
  • 6. 6 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Education in Heart an origin from the RVOT and presence of a single morphology. The predictors for failure include epicardial or papillary muscle origin and presence of multiple morphologies. Successful ablation of PVCs in patients with PIC is usually associated with either normalisation of LV function or an improve- ment in the LV ejection fraction by over 10%–15%. In the study, the LVEF improved by more than 10% in 67% of patients, by 1%–10% in 18% and no improvement was seen in 15% of patients. Understanding of these data enhances our ability to discuss the risks/benefits of PVC ablation with patients and individualise treatment based on their symptoms, LV function and preference. PVCS AND RISK OF SCD In general, PVCs in the absence of any SHD have a benign prognosis, especially when monomor- phic and from typical sites like the outflow tract, papillary muscles and the LV fascicles. Certain factors may indicate that the PVCs are less likely to be benign, and these are mentioned in table 2. These patients may need additional surveillance or attention. Patients with PVC-­induced VF (often associated with short coupled PVCs) continue to be at high risk for subsequent return of PVCs even after a successful ablation or to have PVCs from other foci. They merit implantation of a defibrillator to reduce the risk of SCD. Such PVCs can rarely be seen from the outflow tract or often from the injured Purkinje tissues after an MI or coronary bypass surgery. Often times, patients with PVCs from sites like the RVOT, fascicles and papillary muscles may be associated with non-­ sustained or sustained monomorphic VT of similar morphology. These patients usually do not have any SHD or LGE-­ CMR and tend to have a benign prognosis. Most often, they are not at an increased risk of SCD. The arrhythmias can be well suppressed with an ablation or pharmacological therapy and a defibrillator can be avoided. In patients with PVCs and a cardiomyopathy (typically greater than 5%–10%  burden), the PVC burden is the strongest predictor for devel- opment of LV dysfunction. Hence, in patients with PIC or PVC-­aggravated cardiomyopathy, risk stratification for SCD should be done after best attempts at reducing the PVC burden and appro- priate guideline-­ directed medical therapy has been instituted for a while (usually at least 3 months). A defibrillator would be reasonable if the LV ejec- tion fraction continues to be low (usually ≤35%) despite the aforementioned efforts. Conventionally, the utility of an electrophysio- logical study (EPS) has not been favoured for risk stratification in patients with non-­ ischaemic cardio- myopathy. Recent data have shown some promise of programmed stimulation in patients with frequent PVCs and LV dysfunction in the presence of LGE-­ CMR. A combination of SHD as detected by LGE-­ CMR and an inducible VT at EPS has been found to Figure 4  Ablation: the patient is having PVCs in a quadrigeminal pattern as seen on the 12-­ lead electrocardiography at 10 mm/s starting on the left portion of the screen. Delivery of radiofrequency energy starts at the first vertical bar and results in prompt termination of the PVCs which are last seen once at 4.6 s after the onset of ablation, and there is subsequently no PVCs on the right side of the screen.After completion of ablation, the patient did not have any clinical PVCs during the procedure or on follow-­ up. PVC, premature ventricular complex. Table 2  Factors predicting PVCs as potentially non-­ benign or atypical Clinical Existence of any underlying structural heart disease Existence of late gadolinium enhancement in the right or left ventricle on CMR ECG features Frequent PVCs greater than 10% burden Wider QRS duration (greater than 140 ms) Multiple morphologies of PVCs (pleomorphic) Atypical sites of origin Short coupling interval predisposing to an ‘R on T’ phenomenon Epicardial origin CMR, Cardiac Magnetic Resonance; PVC, premature ventricular complex. on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from
  • 7. 7 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Education in Heart independently predict risk of an adverse outcome and help select patients who may benefit from an ICD in patients with frequent PVCs and LV dysfunc- tion. Further studies in larger number of patients, preferably in randomised controlled trials will be needed to substantiate these data.48 Risk stratifica- tion should be further individualised for inheritable disorders like arrhythmogenic RV cardiomyopathy, Brugada syndrome, long QT syndrome, hypertro- phic cardiomyopathy and CPVT as per their indi- vidual guidelines. CONCLUSION The majority of PVCs in daily practice are benign, especially in the absence of SHD. An EKG, echo, stress test, CMR and PET scan are appropriate tools to establish any SHD based on the appro- priate clinical setting. Ambulatory monitoring is best to assess PVC burden, morphology analysis and to establish cause and effect relation of the symptoms to the PVCs. In asymptomatic patients with normal LV function and absence of SHD, careful surveillance is appropriate. PVC-­ induced sustained ventricular arrhythmias, PIC or PVC-­ aggravated cardiomyopathy are best treated with PVC suppression. Catheter ablation may be a reasonable first-­ line therapy in these patients. Randomised controlled trials are lacking, but the 2017 American Heart Association/American College of Cardiology/Heart Rhythm Society Ventricular Arrhythmia guidelines support catheter ablation as a class I recommenda- tion in patients with frequent PVCs causing LV dysfunction where AADs are not effective, toler- ated or preferred.34 Catheter ablation and AADs are reasonable in symptomatic patients with normal LV function. Risk stratification for SCD should be based on objective criteria for the respective clinical setting. There may be a role for programmed stimulation in patients with LGE-­ CMR, but more data are needed to support it as the standard of care. Twitter Mandeep Bhargava @MandeepBhargava Contributors  KH and MB contributed to the preparation of the manuscript. MB is the senior and corresponding author who has made all the critical revisions of the intellectual content, approved and edited the final version, and made all the questions and explanations. Funding  The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-­for-­profit sectors. Competing interests  None declared. Patient and public involvement  Patients and/or the public were not involved in the design, conduct, reporting or dissemination plans of this research. Patient consent for publication  Not required. Provenance and peer review  Commissioned; internally peer reviewed. Author note  References which include a * are considered to be key references. ORCID iD Mandeep Bhargava http://​orcid.​org/​0000-​0002-​8287-​8014 REFERENCES 1 Cantillon DJ. Evaluation and management of premature ventricular complexes. Cleve Clin J Med 2013;80:377–87. 2 Ng GA.Treating patients with ventricular ectopic beats. Heart 2006;92:1707–12. 3 Simpson RJ, Cascio WE, Schreiner PJ, et al. Prevalence of premature ventricular contractions in a population of African American and white men and women: the Atherosclerosis risk in communities (ARIC) study. Am Heart J 2002;143:535–40. 4 Gaita F, Giustetto C, Di Donna P, et al. Long-­ Term follow-­ up of right ventricular monomorphic extrasystoles. J Am Coll Cardiol 2001;38:364–70. 5 Kennedy HL,Whitlock JA, Sprague MK, et al. Long-­Term follow-­up of asymptomatic healthy subjects with frequent and complex ventricular ectopy. N Engl J Med 1985;312:193–7. 6 van Huls van Taxis CFB, Piers SRD, de Riva Silva M, et al. Fatigue as presenting symptom and a high burden of premature ventricular contractions are independently associated with increased ventricular wall stress in patients with normal left ventricular function. Circ Arrhythm Electrophysiol 2015;8:1452–9. 7 Bigger JT, Fleiss JL, Kleiger R, et al.The relationships among ventricular arrhythmias, left ventricular dysfunction, and mortality in the 2 years after myocardial infarction. Circulation 1984;69:250–8. 8 Mukharji J, Rude RE, Poole WK, et al. Risk factors for sudden death after acute myocardial infarction: two-­ year follow-­ up. Am J Cardiol 1984;54:31–6. 9 Cardiac Arrhythmia Suppression Trial (CAST) Investigators. Preliminary report: effect of encainide and flecainide on mortality in a randomized trial of arrhythmia suppression after myocardial infarction. N Engl J Med 1989;321:406–12. 10 Julian DG, Camm AJ, Frangin G, et al. Randomised trial of effect of amiodarone on mortality in patients with left-­ ventricular dysfunction after recent myocardial infarction: EMIAT. European myocardial infarct amiodarone trial Investigators. Lancet 1997;349:667–74. 11 Cairns JA, Connolly SJ, Roberts R, et al. Randomised trial of outcome after myocardial infarction in patients with frequent CME credits for Education in Heart Education in Heart articles are accredited for CME by various providers.To answer the accompanying multiple choice questions (MCQs) and obtain your credits, click on the 'Take the Test' link on the online version of the article. The MCQs are hosted on BMJ Learning.All users must complete a one-­ time registration on BMJ Learning and subsequently log in on every visit using their username and password to access modules and their CME record.Accreditation is only valid for 2 years from the date of publication. Printable CME certificates are available to users that achieve the minimum pass mark. Key messages ► ► Isolated monomorphic premature ventricular complexes (PVCs) without structural heart disease are generally benign. ► ► Frequent PVCs can cause reversible cardiomyopathy or aggravate an existing cardiomyopathy. ► ► Short coupled PVCs can trigger sustained ventricular fibrillation.These are often from the Purkinje tissue or rarely the outflow tract. ► ► Beta blockers are considered first-­ line therapy but have low efficacy. Catheter ablation and AADs are reasonable to suppress PVCs in appropriate patients. ► ► Ablation is often curative and success depends on location and accessibility of PVCs. ► ► Implantable defibrillators are reasonable in patients at higher risk of sudden cardiac death. on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from
  • 8. 8 Higuchi K, Bhargava M. Heart 2021;0:1–8. doi:10.1136/heartjnl-2020-318628 Education in Heart or repetitive ventricular premature depolarisations: CAMIAT. Canadian amiodarone myocardial infarction arrhythmia trial Investigators. Lancet 1997;349:675–82. 12 Oebel S, Dinov B,Arya A, et al. ECG morphology of premature ventricular contractions predicts the presence of myocardial fibrotic substrate on cardiac magnetic resonance imaging in patients undergoing ablation. J Cardiovasc Electrophysiol 2017;28:1316–23. *13 Bhargava M, Niebauer MJ, Chung MK, et al. Improvement of ventricular function following catheter ablation of frequent ventricular arrhythmias. J Am Coll Cardiol 2003;41:108A. 14 Duffee DF, Shen WK, Smith HC. Suppression of frequent premature ventricular contractions and improvement of left ventricular function in patients with presumed idiopathic dilated cardiomyopathy. Mayo Clin Proc 1998;73:430–3. *15 Bogun F, Crawford T, Reich S, et al. Radiofrequency ablation of frequent, idiopathic premature ventricular complexes: comparison with a control group without intervention. Heart Rhythm 2007;4:863–7. *16 Latchamsetty R, Bogun F. Premature ventricular complex-­ induced cardiomyopathy. JACC Clin Electrophysiol 2019;5:537–50. *17 El Kadri M,Yokokawa M, Labounty T, et al. Effect of ablation of frequent premature ventricular complexes on left ventricular function in patients with nonischemic cardiomyopathy. Heart Rhythm 2015;12:706–13. 18 Baman TS, Lange DC, Ilg KJ, et al. Relationship between burden of premature ventricular complexes and left ventricular function. Heart Rhythm 2010;7:865–9. 19 Penela D,Van Huls Van Taxis C,Van Huls Vans Taxis C, et al. Neurohormonal, structural, and functional recovery pattern after premature ventricular complex ablation is independent of structural heart disease status in patients with depressed left ventricular ejection fraction: a prospective multicenter study. J Am Coll Cardiol 2013;62:1195–202. 20 Yarlagadda RK, Iwai S, Stein KM, et al. Reversal of cardiomyopathy in patients with repetitive monomorphic ventricular ectopy originating from the right ventricular outflow tract. Circulation 2005;112:1092–7. 21 Dukes JW, Dewland TA,Vittinghoff E, et al.Ventricular ectopy as a predictor of heart failure and death. J Am Coll Cardiol 2015;66:101–9. 22 Del Carpio Munoz F, Syed FF, Noheria A, et al. Characteristics of premature ventricular complexes as correlates of reduced left ventricular systolic function: study of the burden, duration, coupling interval, morphology and site of origin of PVCs. J Cardiovasc Electrophysiol 2011;22:791–8. 23 Yokokawa M, Kim HM, Good E, et al. Impact of QRS duration of frequent premature ventricular complexes on the development of cardiomyopathy. Heart Rhythm 2012;9:1460–4. 24 Carballeira Pol L, Deyell MW, Frankel DS, et al.Ventricular premature depolarization QRS duration as a new marker of risk for the development of ventricular premature depolarization-­ induced cardiomyopathy. Heart Rhythm 2014;11:299–306. 25 Deyell MW, Park K-­ M, Han Y, et al. Predictors of recovery of left ventricular dysfunction after ablation of frequent ventricular premature depolarizations. Heart Rhythm 2012;9:1465–72. 26 Sadron Blaye-­ Felice M, Hamon D, Sacher F, et al. Premature ventricular contraction-­ induced cardiomyopathy: related clinical and electrophysiologic parameters. Heart Rhythm 2016;13:103–10. 27 Beaufort-­ Krol GCM, Dijkstra SSP, Bink-­ Boelkens MTE. Natural history of ventricular premature contractions in children with a structurally normal heart: does origin matter? Europace 2008;10:998–1003. 28 Walters TE, Rahmutula D, Szilagyi J, et al. Left ventricular Dyssynchrony predicts the cardiomyopathy associated with premature ventricular contractions. J Am Coll Cardiol 2018;72:2870–82. 29 Huizar JF, Kaszala K, Potfay J, et al. Left ventricular systolic dysfunction induced by ventricular ectopy: a novel model for premature ventricular contraction-­ induced cardiomyopathy. Circ Arrhythm Electrophysiol 2011;4:543–9. 30 Tanaka Y, Rahmutula D, Duggirala S, et al. Diffuse fibrosis leads to a decrease in unipolar voltage: validation in a swine model of premature ventricular contraction-­ induced cardiomyopathy. Heart Rhythm 2016;13:547–54. 31 Wang Y, Eltit JM, Kaszala K, et al. Cellular mechanism of premature ventricular contraction-­ induced cardiomyopathy. Heart Rhythm 2014;11:2064–72. *32 Marrouche NF,Verma A,Wazni O, et al. Mode of initiation and ablation of ventricular fibrillation storms in patients with ischemic cardiomyopathy. J Am Coll Cardiol 2004;43:1715–20. 33 Sacher F,Victor J, Hocini M, et al. [Characterization of premature ventricular contraction initiating ventricular fibrillation]. Arch Mal Coeur Vaiss 2005;98:867–73. 34 Al-­ Khatib SM, Stevenson WG,Ackerman MJ, et al. 2017 AHA/ ACC/HRS guideline for management of patients with ventricular arrhythmias and the prevention of sudden cardiac death: a report of the American College of Cardiology/American heart association Task force on clinical practice guidelines and the heart rhythm Society. J Am Coll Cardiol 2018;72:e91–220. 35 Priori SG, Blomström-­ Lundqvist C, Mazzanti A, et al. 2015 ESC Guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death:The Task Force for the Management of Patients with Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death of the European Society of Cardiology (ESC)Endorsed by:Association for European Paediatric and Congenital Cardiology (AEPC). Europace 2015;17:1601–87. 36 Krittayaphong R, Bhuripanyo K, Punlee K, et al. Effect of atenolol on symptomatic ventricular arrhythmia without structural heart disease: a randomized placebo-­ controlled study. Am Heart J 2002;144:1–5. 37 Hyman MC, Mustin D, Supple G, et al. Class IC antiarrhythmic drugs for suspected premature ventricular contraction-­ induced cardiomyopathy. Heart Rhythm 2018;15:159–63. 38 Hamon D, Swid MA, Rajendran PS, et al. Premature ventricular contraction diurnal profiles predict distinct clinical characteristics and beta-­ blocker responses. J Cardiovasc Electrophysiol 2019;30:836–43. 39 Singh SN, Fletcher RD, Fisher SG, et al.Amiodarone in patients with congestive heart failure and asymptomatic ventricular arrhythmia. survival trial of antiarrhythmic therapy in congestive heart failure. N Engl J Med 1995;333:77–82. 40 Peichl P,Wichterle D, Pavlu L, et al. Complications of catheter ablation of ventricular tachycardia: a single-­ center experience. Circ Arrhythm Electrophysiol 2014;7:684–90. 41 Yamada T, Doppalapudi H, McElderry HT, et al. Idiopathic ventricular arrhythmias originating from the papillary muscles in the left ventricle: prevalence, electrocardiographic and electrophysiological characteristics, and results of the radiofrequency catheter ablation. J Cardiovasc Electrophysiol 2010;21:62–9. 42 Ouyang F, Mathew S,Wu S, et al.Ventricular arrhythmias arising from the left ventricular outflow tract below the aortic sinus cusps: mapping and catheter ablation via transseptal approach and electrocardiographic characteristics. Circ Arrhythm Electrophysiol 2014;7:445–55. 43 Yamada T, Doppalapudi H, Maddox WR, et al. Prevalence and electrocardiographic and electrophysiological characteristics of idiopathic ventricular arrhythmias originating from intramural foci in the left ventricular outflow tract. Circ Arrhythm Electrophysiol 2016;9. 44 Betensky BP, Park RE, Marchlinski FE, et al.The V(2) transition ratio: a new electrocardiographic criterion for distinguishing left from right ventricular outflow tract tachycardia origin. J Am Coll Cardiol 2011;57:2255–62. 45 Bala R, Garcia FC, Hutchinson MD, et al. Electrocardiographic and electrophysiologic features of ventricular arrhythmias originating from the right/left coronary cusp commissure. Heart Rhythm 2010;7:312–22. 46 Vallès E, Bazan V, Marchlinski FE. ECG criteria to identify epicardial ventricular tachycardia in nonischemic cardiomyopathy. Circ Arrhythm Electrophysiol 2010;3:63–71. *47 Latchamsetty R,Yokokawa M, Morady F, et al. Multicenter Outcomes for Catheter Ablation of Idiopathic Premature Ventricular Complexes. JACC Clin Electrophysiol 2015;1:116–23. 48 Yokokawa M, Siontis KC, Kim HM, et al.Value of cardiac magnetic resonance imaging and programmed ventricular stimulation in patients with frequent premature ventricular complexes undergoing radiofrequency ablation. Heart Rhythm 2017;14:1695–701. on August 14, 2021 at India:BMJ-PG Sponsored. Protected by copyright. http://heart.bmj.com/ Heart: first published as 10.1136/heartjnl-2020-318628 on 14 July 2021. Downloaded from