SlideShare ist ein Scribd-Unternehmen logo
1 von 45
“Excuse Me, Is this
Allergen Free?”
The Food Allergy Phenomenon
and its Anesthesia Implications
Gena L Burnett, CRNA, MSN, BSN, BA
Objectives
 Describe Elements of:
 Immunity - Innate vs. Acquired (Adaptive)
 Hypersensitivity reactions
 Anaphylaxis
 Cross-Reactivity
 Understand Food Allergy Basics
 Symptoms
 Diagnosis
 Treatment
 Define Differences and give Anesthesia considerations for:
 IgE Allergies
 FPIES (Food Protein-Induced Enterocolitis Syndrome)
 EoE (Eosinophilic Esophagitis)
 Oral-Allergy Syndrome (OAS)
 Latex-Fruit Syndrome
 Food Allergies and Anesthesia Safety – Can we safely administer Propofol?
 NPO Guidelines and Food Allergies – are we following the guidelines?
Q&A
Below I have listed food allergies/reaction. If a patient
presents with the allergy, would you administer propofol?
1. Peanut – rxn: anaphylaxis
2. Soy – rxn: vomiting/rash
3. Egg – rxn: hives
4. Egg – rxn: profuse vomiting/diarrhea (FPIES)
Innate and Adaptive Immunity
Innate Immunity
 Initial response to any infection: FIRST LINE
 Recognizes targets common to many pathogens
 No memory
 Can fight the same toxin over and over and never realize it
 Skin Invasion resistance
 Includes skin, epithelium, sneeze, sloughing dead cells, vomit,
earwax, mucus, sebaceous fatty & lactic acids, surfactant
 Digestive enzymes destroying swallowed organisms
 Phagocytosis
 Components of Innate Immunity:
 Cellular elements: granulocytes, macrophages, monocytes,
natural killer lymphocytes, lysozymes
 Non-cellular elements: complement complex, acute-phase
proteins and proteins of the contact activation pathway
Leukocytes (WBCs)
Eosinophils
 2.3% of WBCs in body
 Phagocytize allergen-antibody
complexes
 Exhibit chemotaxis
 Collect near allergic reactions
 Detoxify inflammation
produced by basophils/mast
cells
 Reduce the spread of
inflammation
Basophils
 0.4% of WBCs in body
 IgE has a special propensity to
bind to basophils (and mast cells)
– ½ million molecules of IgE per
cell!
 IgE antigen-antibody binding
causes basophils to rupture and
release Heparin, Histamine,
Bradykinin, Serotonin, and
Lysosomal enzymes
 Causes most/many of allergic
reaction symptoms
Adaptive Immunity
 Also known as “acquired immunity”, or SECOND DEFENSE LINE
 Onset is delayed: May take days to react to an unfamiliar antigen
 Fights lethal bacteria, toxins, and foreign tissues
 Works by forming antibodies and/or lymphocytes
 Immunizations create acquired immunity
 Capable of developing memory
 Leading to allergic reactions
 Is more rapidly induced by an antigen when memory is present
 Components of adaptive immunity:
 Humoral: Mediated by B-lymphocytes (they produce antibodies)
 Liver and Bone Marrow
 Cellular: Mediated by T-lymphocytes (destroy foreign agents)
 Thymus gland
Antigen-Antibody
Antigen
 Foreign
proteins/toxins
evoking production
of Antibodies
 Initiate acquired
immunity
 Leads to the
production of T-
lymphocytes via
signal transduction
Antibody
 What the body makes to
‘remember’ a
disease/toxin
 Also termed
immunoglobulins
 Every antibody has a
unique shape/class (5)
IgM, IgG, IgA, IgD, IgE
 Antibodies act by:
 Direct attack on antigen
 Activation of the
Complement System
 Initiate ANAPHYLAXIS
Excessive Adaptive Immunity:
Hypersensitivity Reactions
 Time of onset
 Immediate hypersensitivity:
Antibody mediated
 Delayed hypersensitivity:
T-Cell mediated
 Nature of mediator
 Type I: IgE mediated
 Type II: IgG or IgM, and
complement mediated
 Type III: IgG, IgM, and
complement mediated
 Type IV: Delayed
hypersensitivity reactions
 Type V: Stimulatory
Type I
Immediate
Anaphylaxis
Type II
Cytotoxic
Type III
Immune
Complex
Type IV
Delayed
Hypersensitivity
Hypersensitivity
How Anaphylaxis Occurs
Allergen
binds with
mast cell
antibodies
(IgE)
Vasoactive
mediators
released
First wave
of
symptoms
Activated
mast cells
produce
cytokines
Second
wave of
symptoms
6 to 8
hours later
Vasoactive mediators released during
Antigen/Antibody-Induced Degranulation
Mediator Physiologic Effect
Histamine Increased capillary permeability,
peripheral vasodilation,
bronchoconstriction
Leukotrienes Increased capillary permeability,
intense bronchoconstriction,
negative inotropy, coronary
artery vasoconstriction
Prostaglandins Bronchoconstriction
Eosinophil chemotactic factor Attraction of eosinophils
Neutrophil chemotactic factor Attraction of neutrophils
Platelet activating factor Platelet aggregation and release
of vasoactive amines
Stoelting Table 29-2
Anaphylactoid Reactions
Berries
Shellfish
Mast Cells
Basophils
Mediator release
• Non-IgE
• No prior sensitization required
• Presents as Anaphylaxis
• Managed the same way as Anaphylaxis
Type IV Hypersensitivity Reaction
 A cell-mediated response where sensitized T-cells release
cytokines causing tissue damage
 Repeated exposure causes activated T-helper and T-cytotoxic cells
to move from circulation to the area of toxin (in food allergies, the
GI tract)
 Non-IgE
 FPIES
 EoE
 Dermatitis
Cross-Reactivity or Cross-Sensitization
 90% chance of reacting to other
milks with milk allergy
 75% chance of reacting between
shellfish/crustacean
 50% chance of reacting between
types of fish
 Proteins can react between:
 Food to Food
 Pollen to Food
 Latex to Food
Close structural similarities between any two
allergens from divergent sources can produce
similar allergic reactions in sensitive patients
Food Allergy Basics
 Definition: hypersensitive, exaggerated,
or adverse immune response towards
food proteins causing tissue injury
 Presentation
 Myriad of symptoms
 Wide variation in severity
 Age can play a role
 Types include:
 IgE Mediated
 Mixed IgE/Non-IgE
 EoE
 Non-IgE – cellular/delayed
 OAS
 FPIES
Food Allergy Testing Options
 Medical History and Physical Exam
 SPT – Skin Prick Test
 IgE specific, non-stand alone
 sIgE – Allergen-Specific Serum IgE
 Blood draw required, Non-stand alone
 APT – Atopy Patch Test
 Skin-Contact FA, non-stand alone
 FED – Food Elimination Diet
 EoE (mixed IgE/non-IgE)
 FPIES(non-IgE mediated)
 OFC – Oral Food Challenge
 When open or single-blind, it must be supported by Pt Hx and Labs
 When double-blind placebo-controlled, it is considered diagnostic of FA
 Supervised – hospital or office-based and may require IV, labs, etc.
NOTE: not all patients with allergic sensitization have a clinical allergy
Types of Food Allergens
 Class 1
 Primary sensitizers usually through the GI tract
 Water-soluble glycoproteins
 Heat, acid, and protease stable
 Include the ‘Great 8’ and fruits/vegetables
 Class 2
 Cross-reactivity with Plant Bases
 Often leads to Oral Allergy Syndrome or Latex-Fruit Syndrome
 Heat Labile/Difficult to isolate
The Great 8 for IgE Allergies
 Milk
 Egg (usually egg white)
Ovalbumin, Ovomucoid, Conalbumin
 Soy
 Wheat
 Peanut (1.1%)
 Treenut
 Fish/Shellfish (2.3%)
ALLERGENS can be found in medications, vaccines, cosmetics, craft
materials, sunscreen/bug spray, cleansers, lotions, soaps, and diaper
cream (ingredient and cross contamination)
Symptoms of a Reaction:
• Mild symptoms may include one or more of the following:
• Hives (reddish, swollen, itchy areas on the skin)
• Eczema (a persistent dry, itchy rash)
• Redness of the skin or around the eyes
• Itchy mouth or ear canal
• Nausea or vomiting
• Diarrhea
• Stomach pain
• Nasal congestion or a runny nose
• Sneezing
• Slight, dry cough
• Odd taste in mouth
• Uterine contractions
• Severe symptoms may include one or more of the following:
• Obstructive swelling of the lips, tongue, and/or throat
• Trouble swallowing
• Shortness of breath or wheezing
• Turning blue
• Drop in blood pressure
• Feeling faint, confused, weak, or passing out
• Loss of consciousness
• Chest pain
• A weak or “thread” pulse
• Sense of “impending doom”
Reaction Described by Child
• Pull or scratch tongue
• Put hands in the mouth/Rubbing the face
• Hoarse or squeaky voice
• Crying
• Slurring of words
• "This food is too spicy.”
• "My tongue is hot [or burning].”
• "It feels like something’s poking my tongue.”
• "My tongue [or mouth] is tingling [or burning].”
• "My tongue [or mouth] itches.”
• "It [my tongue] feels like there is hair on it.”
• "My mouth feels funny.”
• "There's a frog in my throat.”
• "There’s something stuck in my throat.”
• "My tongue feels full [or heavy].”
• "My lips feel tight.”
• "It feels like there are bugs in there." (to describe itchy ears)
• "It [my throat] feels thick.”
• "It feels like a bump is on the back of my tongue [throat]."
IgE Allergy Desensitization
 Frequent, repeated intradermal injections of increasing amounts of
an allergen may produce tolerance
 Mechanism: development of specific IgG antibodies to the allergen
 IgG antibodies bind with the allergen as soon as it enters the body
preventing it from reacting with the IgE antibodies on the surface
of mast cells
 IgG coated allergens are then cleared by macrophages
 Unfortunately desensitization does not completely eliminate
immediate hypersensitivity reactions, they reduce symptoms
 Further, life-threatening anaphylaxis has been known to occur from
desensitization therapy itself!
Anesthesia and Anaphylaxis
 Dramatic hypotension and CV collapse may be the only signs under general anesthesia
 Vasodilation
 Decreased Tissue Perfusion
 Shock
 Bronchospasm
 Laryngeal Edema
 Vomiting/Esophageal Spasm
 Most reactions occur within 5-10 minutes
 Proof of anaphylaxis: Increased plasma tryptase within 1-2 hours of the suspected event
 Pre-administered antihistamines to mask IgE-mediated anaphylaxis? No
 Plasma histamine returns to baseline within 30-60 minutes of the event
 Operating Room treatment (ADULTS):
 Discontinue Anesthetic Agents
 100% FiO2 – intubate/support ventilation
 Treat Hypotension – Fluids, Pressors
 Epinephrine – 50-100mcg IV, or 0.5-1mg IV in CV collapse
 Antihistamines – H1 Diphenhydramine 50mg IV, H2 Ranitidine 50mg IV
 Corticosteroids – Hydrocortisone 250mg-1gm IV vs Methylprednisolone 1-2gm IV
 Bronchodilators – Albuterol PRN
 Consider postponing extubation – cuff leak?
Anesthesia and Anaphylaxis:
Pediatrics
WHAT WILL YOU SEE? RASH, BRONCHOSPASM, HYPOTENSION
• Increase O2 to 100%
• Remove suspected trigger(s)
• Ensure adequate ventilation/oxygenation
• If HYPOtensive, turn off anesthetic agents
• To restore intravascular volume: NS or LR 10-30 mL/kg IV/IO rapidly
• To restore BP and ↓mediator release: Epinephrine 1-10 MICROgrams/kg IV/IO, as
needed, may need infusion 0.02-0.2 MICROgrams/kg/min
• Additionally, can give 10MICROgrams/kg IM for depo effect (lingering effects of Epi after
stimulus has been removed)
• To ↓ bronchoconstriction Albuterol (Beta-agonists) 4-10 puffs
• To ↓ mediator release Methylprednisolone 2 mg/kg IV/IO (MAX 100 mg)
• To ↓ histamine-mediated effects: Diphenhydramine 1 mg/kg IV/IO (MAX 50 mg)
• To ↓ effects of histamine: Famotidine or Ranitidine 0.25 mg/kg IV- 1 mg/kg IV
• If anaphylactic reaction requires laboratory confirmation, send mast cell tryptase level
within 2 hours of event
EpiPen/EpiPen JR News
 EpiPen (0.3mg) dose vs EpiPen JR (0.15mg) dose
 2-pack price changes (480% increase!!)
 2004> $83.46
 2007> Mylan purchases drug from Merck
 10/2015> Sanofi US voluntarily recalls Auvi-Q auto-
injector d/t inaccuracies with dose injected
 Teva and Adamis auto-injectors not approved by the
FDA
 2016> $608.61
 The New York Times reports (9/16/2016)
 Mylan working to have the drug placed on the
Federal Preventative List (meaning no co-pay)
 Mylan offers a co-pay discount program
 Mylan contributes to many political campaigns, patient
advocacy groups, and physician groups
 CNN.com reports (10/27/2016)
 Auvi-Q to re-enter market in first half of 2017
FPIES
Food Protein-Induced Enterocolitis Syndrome
 Epidemiology
 Non-IgE/T-cell mediated GI food hypersensitivity
 Prevalence is unknown, but it is rare (0.3% of population in an Israeli study)
 Non-Familial
 Some studies report slightly more common in boys (52%-60%)
 80% of FPIES children are multiple reactors/atopic
 90% of children diagnosed outgrow by age 3
 Often begins in infancy with introduction of Cow’s milk/Soy and solid foods
(can be delayed in breastfed children)
 Triggers
 RICE, oat, and barley
 Chicken, turkey, and egg white
 Green pea
 Peanut
 Sweet potato, white potato, and corn
 Fruit protein
 Fish and shellfish
FPIES
 During episode, Labs show elevated WBC, acidosis, methemoglobinemia, thrombocytosis,
hypoalbuminemia
 There are NO diagnostic/predictive tests except OFC
 Negative SPTs
 Negative sIgE
 APT??
 Often mis-diagnosed/missed on evaluation and physical exam
 Regular follow-up with specialist: GI, Allergist, PT/OT/ST
 ACUTE
 Repetitive, projectile emesis
1-3hrs after food ingestion
 Lethargy
 Pallor/Ashen in appearance
 Diarrhea with blood/mucous 2-
10hrs after ingestion
 Hypothermia
 Dehydration
 Hypotension/Shock
• CHRONIC
• Intermittent emesis
• Bloody diarrhea
• Poor wt gain/wt loss
• Failure to Thrive
• Abdominal distension
• Irritability
• Same as Acute
FPIES Management
Trigger food elimination/Strict Allergen Avoidance
 First Line/Acute
 REMEMBER: EpiPen won’t help!
 Fluid resuscitation
 Single Dose Steroids
 Zofran
 OFC
 Considered the ‘gold-standard’, but are not
required for diagnosis
 0.15-0.3g protein/kg body weight in 3 doses
every 15-20min
 50% reactive OFC requires fluid
resuscitation via IV
 Q18-24months/Follow-Up
 Delayed Introduction/At-Home Food Trial
 Avoid grains, legumes, and poultry until
age 1
 Tolerance of one food in each group is
often a good indicator of ‘safes’
 Soy – legumes
 Oat – grains
 Chicken - poultry
 Breastfeeding partially digests and
processes the proteins
 Protects against CM/Soy FPIES, but not
Solid Food FPIES
 Mother’s elimination diets
No Sharing Food, No Restaurant Food, No Party Food
Preschool – allergy table with teacher supervision & separate preparation
ALLERGENS can be found in medication, vaccines, cosmetics, craft materials,
bubbles, sunscreen/bug spray, cleansers, lotions, soaps, and diaper cream
(ingredient and cross contamination)
Anesthesia and FPIES
 Operative Scenario: A 2yo patient with FPIES to milk, rice, oat,
and soy presents for endoscopy.
 Concerns?
 Changes in the plan of care?
 Changes in your hand-off procedures?
EoE: eosinophilic esophagitis
 Chronic esophageal dysfunction caused by T-cell inflammatory
response to food/environmental allergens
 Activated eosinophils -> cytokine release -> attack healthy tissue
repeatedly -> epithelial/esophageal injury
 Endoscopic Features/Histology Reports are characteristic but not
diagnostic (6yr delay in diagnosis reported in one study)
 Pediatrics – mostly inflammatory; dysphagia (inaccurately
described), emesis, abdominal pain, GERD
 Adults – both inflammatory and fibrostenosis; dysphagia and food
impaction
 Most pts have atopic history
 IgE food allergies
 Allergic Rhinitis
 Asthma
 Contact Dermatitis
COMMON TRIGGERS
MILK
wheat, egg, soy, nuts, seafood
corn, chicken
EoE Treatment
 IgE Allergy Testing – SPT, sIgE, APT
 Dietary restriction
 PEDS: hypoallergenic AA-based formula and minimal OFC added solid foods
 Concerns: feeding difficulties (N/OG-Tube, G/J-Tube), fear, isolation
 Topical Corticosteroids
 Fluticasone (aerosolized/swallowed)
 Budesonide (suspension vs nebulizer)
 Maintenance?
 Esophageal Dilation
 New Therapies in Clinical Trials
 PPIs
 Monoclonal Antibody therapy at IL-5 – Mepolizulab (Nucala) and others
 Mast Cell Stabilizer - Cromolyn Sodium
 CysLT1 receptor antagonist – Montelukast (Singulair)
 Angiotensin II receptor blockers – Losartan
EoE and Anesthesia
 Upper Endoscopy/Biopsy
 Foreign Body Extraction
 Esophageal Dilation
 Pediatric G-tube placement
OAS: Oral Allergy Syndrome
 Pollen Food Hypersensitivity Syndrome
 Considered ‘mild’ IgE reaction limited to the oropharynx
 Pruritus
 Tingling
 Erythema
 Swelling of lip, oral mucosa, throat, or tongue
 Patient has environmental/pollen allergies and cannot eat
fruits/vegetables with pollen allergen on or in the fruit
 Most common with raw or uncooked fruit/vegetable
 A Class 2 Type of Food Allergy
 In 3% of patients, OAS causes systemic reaction or anaphylaxis
Latex-Fruit Syndrome
 Food (or seeds) with clinical or immunological
cross-reactivity with latex proteins
 2002 study shows 30-50% of patients with NRL
allergy also have some food hypersensitivities
(Wagner and Breiteneder)
 IgE vs Non-IgE mediated Food Allergy
concerns?
• High: Avocado, Banana, Chestnut, Kiwi
• Moderate: Apple, Carrot, Celery, Melons, Papaya, Potato, Tomato
• Low/undetermined (40): Apricot, Buckwheat, Cassava/Manioc, Castor bean,
Cherry, Chick pea, Citrus fruits, Coconut, Cucumber, Dill, Eggplant/Aubergine,
Fig, Goji berry/Wolfberry, Grape, Hazelnut, Indian jujube, Jackfruit, Lychee,
Mango, Nectarine, Oregano, Passion fruit, Peach, Peanut, Pear, Peppers
(Cayenne, Sweet/bell), Persimmon, Pineapple, Pumpkin, Rye, Sage, Strawberry,
Shellfish, Soybean, Sunflower seed, Tobacco, Turnip, Walnut, Wheat, Zucchini
www.latexallergyresources.org
Gluten
 Gluten is a protein found in grains: wheat, rye, barley, and triticale
(wheat/rye cross)
 Those with Celiac have to specifically avoid Gluten – even trace
amounts can cause a reaction
 Those who are symptomatic with gluten but do not have Celiac have
Non-Celiac Gluten Sensitivity
 Cross-contamination during manufacturing
 Vitamins lost with Gluten-Free diet: iron, calcium, fiber, thiamin,
riboflavin, niacin, folate
MSG
 Monosodium glutamate
 A meat flavor enhancer often found in Chinese and Asian
foods
 Reported System Complex – myalgia, nausea, neck pain,
backache, sweating, flushing, chest tightness
 Difficult to reproduce in OCTs
Food Allergies and Propofol
 Emulsion contains soybean oil, egg lecithin, and glycerol
 Soy and Egg Allergy – contamination during processing
 Peanut Allergy – cross-reactivity between soy and peanut: review
from 2000 shows a low rate of cross-reactivity
 Allergy is thought to be IgE mediated with the 2-isopropyl-group
as the suspect epitope (multiple studies)
 (2001) Australia Peds study: 28 egg-allergic children with 43
propofol cases; one atopic child with egg anaphylaxis got
erythema/urticaria, confirmed propofol allergy via SPT/sIgE
 (2013) Spanish study: 60 EoE pts had 404 endoscopies with
propofol; 86% had IgE to egg, soy, or peanut via SPT/sIgE (35%
with clinical allergy); No reactions reported
Food Allergies and Propofol
 (2016) Denmark study (BJA):
 Study A: 273 pts with suspected intra-op reactions
 154 propofol-exposed pts had SPTs and IV challenge
 4 pts tested positive for propofol allergy – but none had allergies to egg, soy, or peanut
 Study B: 520 pts with +sIgE to egg, soy, or peanut retrospectively reviewed
 171 retrieved records from 99pts – no reactions found
 “No evidence for contraindications to the use of propofol in adults allergic to egg, soy, or peanut”
 (2016) Polish/Czech review of evidence:
 ‘References demonstrating safe use of propofol in food allergy pts’
 5 retrospective studies, 1 lit review, and 1 consensus statement, includes adults and
pediatrics
 ‘References demonstrating a potential allergic reaction to propofol’
 8 case reports and 1 retrospective study
 Limited data does not support avoiding propofol
Q&A
Below I have listed food allergies/reaction. If a patient
presents with the allergy, would you administer propofol?
1. Peanut – rxn: anaphylaxis
2. Soy – rxn: rash/vomiting
3. Egg – rxn: hives
4. Egg – rxn: FPIES
5. Milk – rxn: causes EoE
NPO Guidelines and Food Allergies
ASA Guidelines
2H – clear liquids
4H – breastmilk
6H – non-human milk,
formula, light meal
8H – full, high-fat meal
NPO after midnight
 Likely originated in 1946 with an obstetric study on pulmonary aspiration by
Mendelson
 1946 study found 0.15% OB patients who received GA had pulmonary
aspiration compared to 0.006% in a 2002 study
 Gastric volume and/or pH is unrelated to fasting duration
Benefits of following Guidelines
• Better hydration status
• Improved hemodynamic stability
• Reduction in surgical stress response
Adverse Effects of Prolonged NPO status
• Hunger, thirst, discomfort, crying
• Hypoglycemia
• Dehydration, hypovolemia
• Electrolyte imbalance, ketosis
• Malnutrition
• General malaise
• Delayed recovery, wound healing
• Immune suppression, infection susceptibility
Evidence-Based Practice or
Time-Honored Tradition?
 (2002) Crenshaw and Winslow – 155 adults, 14hrs solids, 12hrs liquids
 (2008) Crenshaw and Winslow follow-up – 275 adults, 14hrs solids, 11hrs liquids
 (2011) Engelhart et. Al – 1350 pediatrics, 12hrs solids, 8hrs liquids
 (2013) Arun and Korula (INDIA) – 50 pediatrics, ~11hrs solids, ~9hrs liquids
 (2013) Williams et. Al – 219 pediatrics
 Average Fasting Times to Surgery/Procedure time
 Solids: 14.08+6.28hrs
 Breastmilk: 9.82+6.6hrs
 Clears: 12.61+5.88hrs
 Non-compliance w/ guidelines based on MD order
 62% for solids
 100% for breastmilk
 97% for clears
 (2016) Brunet-Wood et. Al – 53 pediatrics
 No patients allowed clears 2hrs prior and 70% were NPO for 8+ hrs prior
 Found 80% (complex) and 65% (non-complex) of pre-op NPO times not within guidelines
 Also covered post-operative NPO times: time to first nutrition in complex cases is 63.6hrs and 23.8hrs
for non-complex cases
NPO True or False?
 My 64yo patient can have a cup of black coffee at 0600 for hernia
surgery at 0900.
 The same patient is obese with diabetes and GERD, and added cream to
the coffee. What time can the surgery start?
 My 18month old patient can have apple juice at 0700 for oral surgery at
0930.
 My 5month old patient can be nursed at 0500 for a T&A at 0800.
 The ENT surgeon has been delayed and cannot arrive until 1000. It is
0630 and the patient has arrived in pre-op. It is ok for the parent to give
the child Pedialyte in a bottle.
 As a practitioner, I keep my patients NPO for too long.
 Pre-op will page me every 5 minutes if we change the rule NPO after
midnight.
Our FPIES Journey
 6mo
 7mo
 10mo
 2.5yr
 3yr
Questions, Comments, or References
Email: genaleeburnett@gmail.com

Weitere ähnliche Inhalte

Was ist angesagt?

Immunology and allergy
Immunology and allergyImmunology and allergy
Immunology and allergy
RiyaGupta217
 
Hypersensitivity Concepts Vo
Hypersensitivity Concepts VoHypersensitivity Concepts Vo
Hypersensitivity Concepts Vo
Brandon Cooper
 
Food allergens in food safety
Food allergens in food safetyFood allergens in food safety
Food allergens in food safety
Equinox Labs
 

Was ist angesagt? (18)

Food allergy
Food allergyFood allergy
Food allergy
 
Food allergy & Food Intolerance
Food allergy & Food IntoleranceFood allergy & Food Intolerance
Food allergy & Food Intolerance
 
Allergy
AllergyAllergy
Allergy
 
Food allergy
Food allergyFood allergy
Food allergy
 
Immunology and allergy
Immunology and allergyImmunology and allergy
Immunology and allergy
 
Hypersensitivity or allergic reactions
Hypersensitivity or allergic reactionsHypersensitivity or allergic reactions
Hypersensitivity or allergic reactions
 
Hypersensitivity Concepts Vo
Hypersensitivity Concepts VoHypersensitivity Concepts Vo
Hypersensitivity Concepts Vo
 
Allergic rhinitis
Allergic rhinitisAllergic rhinitis
Allergic rhinitis
 
Top 7 superfoods to boost immunity
Top 7 superfoods to boost immunityTop 7 superfoods to boost immunity
Top 7 superfoods to boost immunity
 
Top 7 superfoods to boost immunity
Top 7 superfoods to boost immunityTop 7 superfoods to boost immunity
Top 7 superfoods to boost immunity
 
Food allergens in food safety
Food allergens in food safetyFood allergens in food safety
Food allergens in food safety
 
Type 1 hypersensitivity
Type 1 hypersensitivityType 1 hypersensitivity
Type 1 hypersensitivity
 
Top 7 superfoods to boost immunity
Top 7 superfoods to boost immunityTop 7 superfoods to boost immunity
Top 7 superfoods to boost immunity
 
01 allergies and anaphylaxis
01 allergies and anaphylaxis01 allergies and anaphylaxis
01 allergies and anaphylaxis
 
hypersensitivity type 1
hypersensitivity type 1hypersensitivity type 1
hypersensitivity type 1
 
Hypersensitivity reactions
Hypersensitivity  reactions Hypersensitivity  reactions
Hypersensitivity reactions
 
Food allergy
Food allergyFood allergy
Food allergy
 
Boost Immune System, Important tips for Boosting Immune System
Boost Immune System, Important tips for Boosting Immune SystemBoost Immune System, Important tips for Boosting Immune System
Boost Immune System, Important tips for Boosting Immune System
 

Andere mochten auch

Andere mochten auch (20)

Perioperative Anaphylaxis
Perioperative AnaphylaxisPerioperative Anaphylaxis
Perioperative Anaphylaxis
 
Business of Freelancing 2015
Business of Freelancing 2015Business of Freelancing 2015
Business of Freelancing 2015
 
Uncommon obstetrical procedures
Uncommon obstetrical proceduresUncommon obstetrical procedures
Uncommon obstetrical procedures
 
CPC Program Requirements
CPC Program RequirementsCPC Program Requirements
CPC Program Requirements
 
Joseph McVicker NCANA
Joseph McVicker NCANAJoseph McVicker NCANA
Joseph McVicker NCANA
 
What's New in Cardiac
What's New in CardiacWhat's New in Cardiac
What's New in Cardiac
 
Allergy and anesthesia
Allergy and anesthesiaAllergy and anesthesia
Allergy and anesthesia
 
Fst2
Fst2Fst2
Fst2
 
In A Moments Notice
In A Moments NoticeIn A Moments Notice
In A Moments Notice
 
How to Prepare for the Next Big Epidemiological Event
How to Prepare for the Next Big Epidemiological EventHow to Prepare for the Next Big Epidemiological Event
How to Prepare for the Next Big Epidemiological Event
 
R U Reasonable?
R U Reasonable?R U Reasonable?
R U Reasonable?
 
Goal Directed Fluid Therapy: Fact, Fiction, Findings and the Future
Goal Directed Fluid Therapy: Fact, Fiction, Findings and the FutureGoal Directed Fluid Therapy: Fact, Fiction, Findings and the Future
Goal Directed Fluid Therapy: Fact, Fiction, Findings and the Future
 
The Use of EKG to Detect Coronary Ischemia
The Use of EKG to Detect Coronary IschemiaThe Use of EKG to Detect Coronary Ischemia
The Use of EKG to Detect Coronary Ischemia
 
All Sugars Are Not Created Equal - Kimberli Zecchin
All Sugars Are Not Created Equal - Kimberli ZecchinAll Sugars Are Not Created Equal - Kimberli Zecchin
All Sugars Are Not Created Equal - Kimberli Zecchin
 
Fast Tracking Ambulatory Surgery Patients
Fast Tracking Ambulatory Surgery PatientsFast Tracking Ambulatory Surgery Patients
Fast Tracking Ambulatory Surgery Patients
 
Anesthesia on Safari
Anesthesia on SafariAnesthesia on Safari
Anesthesia on Safari
 
Anatomy and physiology of political action for crn as
Anatomy and physiology of political action for crn asAnatomy and physiology of political action for crn as
Anatomy and physiology of political action for crn as
 
Awake intubation distribution
Awake intubation distributionAwake intubation distribution
Awake intubation distribution
 
Anesthetic Aspects of Endocrine Surgery
Anesthetic Aspects of Endocrine SurgeryAnesthetic Aspects of Endocrine Surgery
Anesthetic Aspects of Endocrine Surgery
 
Postoperative Vision Loss - Kathy Alwon
Postoperative Vision Loss - Kathy AlwonPostoperative Vision Loss - Kathy Alwon
Postoperative Vision Loss - Kathy Alwon
 

Ähnlich wie Excuse Me, Is this Allergen Free

Fda Ws1 11 15 07
Fda Ws1 11 15 07Fda Ws1 11 15 07
Fda Ws1 11 15 07
yiyingtsai
 
Allergy Power Point Presentation
Allergy Power Point PresentationAllergy Power Point Presentation
Allergy Power Point Presentation
guestc513e4b
 
Allergy
AllergyAllergy
Allergy
xatoon
 
anaphylaxis-140426114048-phpapp02 (1).pdf
anaphylaxis-140426114048-phpapp02 (1).pdfanaphylaxis-140426114048-phpapp02 (1).pdf
anaphylaxis-140426114048-phpapp02 (1).pdf
dianqisthi
 
Food Allergy Seminar.Lecture.Class
Food Allergy Seminar.Lecture.ClassFood Allergy Seminar.Lecture.Class
Food Allergy Seminar.Lecture.Class
drtededwards
 

Ähnlich wie Excuse Me, Is this Allergen Free (20)

Food Allergy An Overview
Food Allergy An OverviewFood Allergy An Overview
Food Allergy An Overview
 
food allergy.pptx
food allergy.pptxfood allergy.pptx
food allergy.pptx
 
Fda Ws1 11 15 07
Fda Ws1 11 15 07Fda Ws1 11 15 07
Fda Ws1 11 15 07
 
Allergy Power Point Presentation
Allergy Power Point PresentationAllergy Power Point Presentation
Allergy Power Point Presentation
 
FOOD ALLERGENS.pptx
FOOD ALLERGENS.pptxFOOD ALLERGENS.pptx
FOOD ALLERGENS.pptx
 
Allergic or Hypersensitivity Reactions.pptx
Allergic or Hypersensitivity Reactions.pptxAllergic or Hypersensitivity Reactions.pptx
Allergic or Hypersensitivity Reactions.pptx
 
Allergy
AllergyAllergy
Allergy
 
Lary nel b. abao food hygiene lecture
Lary nel b. abao food hygiene lectureLary nel b. abao food hygiene lecture
Lary nel b. abao food hygiene lecture
 
Food allergies
Food allergies Food allergies
Food allergies
 
Ig e mediated diseases dr. ihsan alsaimary
Ig e mediated diseases dr. ihsan alsaimaryIg e mediated diseases dr. ihsan alsaimary
Ig e mediated diseases dr. ihsan alsaimary
 
Are Food Allergies Making you FAT?
Are Food Allergies Making you FAT?Are Food Allergies Making you FAT?
Are Food Allergies Making you FAT?
 
Anaphylaxis
AnaphylaxisAnaphylaxis
Anaphylaxis
 
anaphylaxis-140426114048-phpapp02 (1).pdf
anaphylaxis-140426114048-phpapp02 (1).pdfanaphylaxis-140426114048-phpapp02 (1).pdf
anaphylaxis-140426114048-phpapp02 (1).pdf
 
Food Allergy Seminar.Lecture.Class
Food Allergy Seminar.Lecture.ClassFood Allergy Seminar.Lecture.Class
Food Allergy Seminar.Lecture.Class
 
Allergy.pdf
Allergy.pdfAllergy.pdf
Allergy.pdf
 
Allergy
AllergyAllergy
Allergy
 
Brandon
BrandonBrandon
Brandon
 
allergy.pptx
allergy.pptxallergy.pptx
allergy.pptx
 
allergy.pptx
allergy.pptxallergy.pptx
allergy.pptx
 
Presentation serology.pptx
Presentation serology.pptxPresentation serology.pptx
Presentation serology.pptx
 

Mehr von NC Association of Nurse Anesthetists

Mehr von NC Association of Nurse Anesthetists (14)

Using Arterial Pressure Based Cardiac Output to Guide Therapy - Chris Saraceno
Using Arterial Pressure Based Cardiac Output to Guide Therapy - Chris SaracenoUsing Arterial Pressure Based Cardiac Output to Guide Therapy - Chris Saraceno
Using Arterial Pressure Based Cardiac Output to Guide Therapy - Chris Saraceno
 
Fundamentals of Ultrasound Guided Peripheral Regional Anesthesia Techniques
Fundamentals of Ultrasound Guided Peripheral Regional Anesthesia TechniquesFundamentals of Ultrasound Guided Peripheral Regional Anesthesia Techniques
Fundamentals of Ultrasound Guided Peripheral Regional Anesthesia Techniques
 
Pain Management: Updating the Outdated
Pain Management: Updating the OutdatedPain Management: Updating the Outdated
Pain Management: Updating the Outdated
 
Anesthesia for Carotid Endarterectomy: Risks, Benefits, Alternatives
Anesthesia for Carotid Endarterectomy: Risks, Benefits, AlternativesAnesthesia for Carotid Endarterectomy: Risks, Benefits, Alternatives
Anesthesia for Carotid Endarterectomy: Risks, Benefits, Alternatives
 
TEE Workshop
TEE WorkshopTEE Workshop
TEE Workshop
 
NCANA PTSD EMERGENCE DELIRIUM
NCANA PTSD EMERGENCE DELIRIUM NCANA PTSD EMERGENCE DELIRIUM
NCANA PTSD EMERGENCE DELIRIUM
 
Propofol ketamine technique for rapid turnover
Propofol ketamine technique for rapid turnoverPropofol ketamine technique for rapid turnover
Propofol ketamine technique for rapid turnover
 
Addition of ultrasound
Addition of ultrasoundAddition of ultrasound
Addition of ultrasound
 
Emotional Intelligence crna
Emotional Intelligence crnaEmotional Intelligence crna
Emotional Intelligence crna
 
Central Line in Anesthesia
Central Line in AnesthesiaCentral Line in Anesthesia
Central Line in Anesthesia
 
Anesthesia During Pregnancy
Anesthesia During PregnancyAnesthesia During Pregnancy
Anesthesia During Pregnancy
 
Political Primer 2015
Political Primer 2015Political Primer 2015
Political Primer 2015
 
Social Media Lecture
Social Media LectureSocial Media Lecture
Social Media Lecture
 
Uncommon obstetrical procedures
Uncommon obstetrical proceduresUncommon obstetrical procedures
Uncommon obstetrical procedures
 

Kürzlich hochgeladen

1029 - Danh muc Sach Giao Khoa 10 . pdf
1029 -  Danh muc Sach Giao Khoa 10 . pdf1029 -  Danh muc Sach Giao Khoa 10 . pdf
1029 - Danh muc Sach Giao Khoa 10 . pdf
QucHHunhnh
 
Activity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdfActivity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdf
ciinovamais
 
Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...
Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...
Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...
ZurliaSoop
 

Kürzlich hochgeladen (20)

Towards a code of practice for AI in AT.pptx
Towards a code of practice for AI in AT.pptxTowards a code of practice for AI in AT.pptx
Towards a code of practice for AI in AT.pptx
 
1029 - Danh muc Sach Giao Khoa 10 . pdf
1029 -  Danh muc Sach Giao Khoa 10 . pdf1029 -  Danh muc Sach Giao Khoa 10 . pdf
1029 - Danh muc Sach Giao Khoa 10 . pdf
 
Single or Multiple melodic lines structure
Single or Multiple melodic lines structureSingle or Multiple melodic lines structure
Single or Multiple melodic lines structure
 
Python Notes for mca i year students osmania university.docx
Python Notes for mca i year students osmania university.docxPython Notes for mca i year students osmania university.docx
Python Notes for mca i year students osmania university.docx
 
Activity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdfActivity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdf
 
ICT Role in 21st Century Education & its Challenges.pptx
ICT Role in 21st Century Education & its Challenges.pptxICT Role in 21st Century Education & its Challenges.pptx
ICT Role in 21st Century Education & its Challenges.pptx
 
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
 
How to Create and Manage Wizard in Odoo 17
How to Create and Manage Wizard in Odoo 17How to Create and Manage Wizard in Odoo 17
How to Create and Manage Wizard in Odoo 17
 
Sociology 101 Demonstration of Learning Exhibit
Sociology 101 Demonstration of Learning ExhibitSociology 101 Demonstration of Learning Exhibit
Sociology 101 Demonstration of Learning Exhibit
 
Key note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdfKey note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdf
 
Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...
Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...
Jual Obat Aborsi Hongkong ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan...
 
Unit-IV; Professional Sales Representative (PSR).pptx
Unit-IV; Professional Sales Representative (PSR).pptxUnit-IV; Professional Sales Representative (PSR).pptx
Unit-IV; Professional Sales Representative (PSR).pptx
 
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
 
Unit-V; Pricing (Pharma Marketing Management).pptx
Unit-V; Pricing (Pharma Marketing Management).pptxUnit-V; Pricing (Pharma Marketing Management).pptx
Unit-V; Pricing (Pharma Marketing Management).pptx
 
Mehran University Newsletter Vol-X, Issue-I, 2024
Mehran University Newsletter Vol-X, Issue-I, 2024Mehran University Newsletter Vol-X, Issue-I, 2024
Mehran University Newsletter Vol-X, Issue-I, 2024
 
Spatium Project Simulation student brief
Spatium Project Simulation student briefSpatium Project Simulation student brief
Spatium Project Simulation student brief
 
Making communications land - Are they received and understood as intended? we...
Making communications land - Are they received and understood as intended? we...Making communications land - Are they received and understood as intended? we...
Making communications land - Are they received and understood as intended? we...
 
ICT role in 21st century education and it's challenges.
ICT role in 21st century education and it's challenges.ICT role in 21st century education and it's challenges.
ICT role in 21st century education and it's challenges.
 
This PowerPoint helps students to consider the concept of infinity.
This PowerPoint helps students to consider the concept of infinity.This PowerPoint helps students to consider the concept of infinity.
This PowerPoint helps students to consider the concept of infinity.
 
Application orientated numerical on hev.ppt
Application orientated numerical on hev.pptApplication orientated numerical on hev.ppt
Application orientated numerical on hev.ppt
 

Excuse Me, Is this Allergen Free

  • 1. “Excuse Me, Is this Allergen Free?” The Food Allergy Phenomenon and its Anesthesia Implications Gena L Burnett, CRNA, MSN, BSN, BA
  • 2. Objectives  Describe Elements of:  Immunity - Innate vs. Acquired (Adaptive)  Hypersensitivity reactions  Anaphylaxis  Cross-Reactivity  Understand Food Allergy Basics  Symptoms  Diagnosis  Treatment  Define Differences and give Anesthesia considerations for:  IgE Allergies  FPIES (Food Protein-Induced Enterocolitis Syndrome)  EoE (Eosinophilic Esophagitis)  Oral-Allergy Syndrome (OAS)  Latex-Fruit Syndrome  Food Allergies and Anesthesia Safety – Can we safely administer Propofol?  NPO Guidelines and Food Allergies – are we following the guidelines?
  • 3. Q&A Below I have listed food allergies/reaction. If a patient presents with the allergy, would you administer propofol? 1. Peanut – rxn: anaphylaxis 2. Soy – rxn: vomiting/rash 3. Egg – rxn: hives 4. Egg – rxn: profuse vomiting/diarrhea (FPIES)
  • 5. Innate Immunity  Initial response to any infection: FIRST LINE  Recognizes targets common to many pathogens  No memory  Can fight the same toxin over and over and never realize it  Skin Invasion resistance  Includes skin, epithelium, sneeze, sloughing dead cells, vomit, earwax, mucus, sebaceous fatty & lactic acids, surfactant  Digestive enzymes destroying swallowed organisms  Phagocytosis  Components of Innate Immunity:  Cellular elements: granulocytes, macrophages, monocytes, natural killer lymphocytes, lysozymes  Non-cellular elements: complement complex, acute-phase proteins and proteins of the contact activation pathway
  • 6. Leukocytes (WBCs) Eosinophils  2.3% of WBCs in body  Phagocytize allergen-antibody complexes  Exhibit chemotaxis  Collect near allergic reactions  Detoxify inflammation produced by basophils/mast cells  Reduce the spread of inflammation Basophils  0.4% of WBCs in body  IgE has a special propensity to bind to basophils (and mast cells) – ½ million molecules of IgE per cell!  IgE antigen-antibody binding causes basophils to rupture and release Heparin, Histamine, Bradykinin, Serotonin, and Lysosomal enzymes  Causes most/many of allergic reaction symptoms
  • 7. Adaptive Immunity  Also known as “acquired immunity”, or SECOND DEFENSE LINE  Onset is delayed: May take days to react to an unfamiliar antigen  Fights lethal bacteria, toxins, and foreign tissues  Works by forming antibodies and/or lymphocytes  Immunizations create acquired immunity  Capable of developing memory  Leading to allergic reactions  Is more rapidly induced by an antigen when memory is present  Components of adaptive immunity:  Humoral: Mediated by B-lymphocytes (they produce antibodies)  Liver and Bone Marrow  Cellular: Mediated by T-lymphocytes (destroy foreign agents)  Thymus gland
  • 8. Antigen-Antibody Antigen  Foreign proteins/toxins evoking production of Antibodies  Initiate acquired immunity  Leads to the production of T- lymphocytes via signal transduction Antibody  What the body makes to ‘remember’ a disease/toxin  Also termed immunoglobulins  Every antibody has a unique shape/class (5) IgM, IgG, IgA, IgD, IgE  Antibodies act by:  Direct attack on antigen  Activation of the Complement System  Initiate ANAPHYLAXIS
  • 9. Excessive Adaptive Immunity: Hypersensitivity Reactions  Time of onset  Immediate hypersensitivity: Antibody mediated  Delayed hypersensitivity: T-Cell mediated  Nature of mediator  Type I: IgE mediated  Type II: IgG or IgM, and complement mediated  Type III: IgG, IgM, and complement mediated  Type IV: Delayed hypersensitivity reactions  Type V: Stimulatory Type I Immediate Anaphylaxis Type II Cytotoxic Type III Immune Complex Type IV Delayed Hypersensitivity Hypersensitivity
  • 10. How Anaphylaxis Occurs Allergen binds with mast cell antibodies (IgE) Vasoactive mediators released First wave of symptoms Activated mast cells produce cytokines Second wave of symptoms 6 to 8 hours later
  • 11. Vasoactive mediators released during Antigen/Antibody-Induced Degranulation Mediator Physiologic Effect Histamine Increased capillary permeability, peripheral vasodilation, bronchoconstriction Leukotrienes Increased capillary permeability, intense bronchoconstriction, negative inotropy, coronary artery vasoconstriction Prostaglandins Bronchoconstriction Eosinophil chemotactic factor Attraction of eosinophils Neutrophil chemotactic factor Attraction of neutrophils Platelet activating factor Platelet aggregation and release of vasoactive amines Stoelting Table 29-2
  • 12. Anaphylactoid Reactions Berries Shellfish Mast Cells Basophils Mediator release • Non-IgE • No prior sensitization required • Presents as Anaphylaxis • Managed the same way as Anaphylaxis
  • 13. Type IV Hypersensitivity Reaction  A cell-mediated response where sensitized T-cells release cytokines causing tissue damage  Repeated exposure causes activated T-helper and T-cytotoxic cells to move from circulation to the area of toxin (in food allergies, the GI tract)  Non-IgE  FPIES  EoE  Dermatitis
  • 14. Cross-Reactivity or Cross-Sensitization  90% chance of reacting to other milks with milk allergy  75% chance of reacting between shellfish/crustacean  50% chance of reacting between types of fish  Proteins can react between:  Food to Food  Pollen to Food  Latex to Food Close structural similarities between any two allergens from divergent sources can produce similar allergic reactions in sensitive patients
  • 15. Food Allergy Basics  Definition: hypersensitive, exaggerated, or adverse immune response towards food proteins causing tissue injury  Presentation  Myriad of symptoms  Wide variation in severity  Age can play a role  Types include:  IgE Mediated  Mixed IgE/Non-IgE  EoE  Non-IgE – cellular/delayed  OAS  FPIES
  • 16. Food Allergy Testing Options  Medical History and Physical Exam  SPT – Skin Prick Test  IgE specific, non-stand alone  sIgE – Allergen-Specific Serum IgE  Blood draw required, Non-stand alone  APT – Atopy Patch Test  Skin-Contact FA, non-stand alone  FED – Food Elimination Diet  EoE (mixed IgE/non-IgE)  FPIES(non-IgE mediated)  OFC – Oral Food Challenge  When open or single-blind, it must be supported by Pt Hx and Labs  When double-blind placebo-controlled, it is considered diagnostic of FA  Supervised – hospital or office-based and may require IV, labs, etc. NOTE: not all patients with allergic sensitization have a clinical allergy
  • 17. Types of Food Allergens  Class 1  Primary sensitizers usually through the GI tract  Water-soluble glycoproteins  Heat, acid, and protease stable  Include the ‘Great 8’ and fruits/vegetables  Class 2  Cross-reactivity with Plant Bases  Often leads to Oral Allergy Syndrome or Latex-Fruit Syndrome  Heat Labile/Difficult to isolate
  • 18. The Great 8 for IgE Allergies  Milk  Egg (usually egg white) Ovalbumin, Ovomucoid, Conalbumin  Soy  Wheat  Peanut (1.1%)  Treenut  Fish/Shellfish (2.3%) ALLERGENS can be found in medications, vaccines, cosmetics, craft materials, sunscreen/bug spray, cleansers, lotions, soaps, and diaper cream (ingredient and cross contamination)
  • 19.
  • 20. Symptoms of a Reaction: • Mild symptoms may include one or more of the following: • Hives (reddish, swollen, itchy areas on the skin) • Eczema (a persistent dry, itchy rash) • Redness of the skin or around the eyes • Itchy mouth or ear canal • Nausea or vomiting • Diarrhea • Stomach pain • Nasal congestion or a runny nose • Sneezing • Slight, dry cough • Odd taste in mouth • Uterine contractions • Severe symptoms may include one or more of the following: • Obstructive swelling of the lips, tongue, and/or throat • Trouble swallowing • Shortness of breath or wheezing • Turning blue • Drop in blood pressure • Feeling faint, confused, weak, or passing out • Loss of consciousness • Chest pain • A weak or “thread” pulse • Sense of “impending doom”
  • 21. Reaction Described by Child • Pull or scratch tongue • Put hands in the mouth/Rubbing the face • Hoarse or squeaky voice • Crying • Slurring of words • "This food is too spicy.” • "My tongue is hot [or burning].” • "It feels like something’s poking my tongue.” • "My tongue [or mouth] is tingling [or burning].” • "My tongue [or mouth] itches.” • "It [my tongue] feels like there is hair on it.” • "My mouth feels funny.” • "There's a frog in my throat.” • "There’s something stuck in my throat.” • "My tongue feels full [or heavy].” • "My lips feel tight.” • "It feels like there are bugs in there." (to describe itchy ears) • "It [my throat] feels thick.” • "It feels like a bump is on the back of my tongue [throat]."
  • 22. IgE Allergy Desensitization  Frequent, repeated intradermal injections of increasing amounts of an allergen may produce tolerance  Mechanism: development of specific IgG antibodies to the allergen  IgG antibodies bind with the allergen as soon as it enters the body preventing it from reacting with the IgE antibodies on the surface of mast cells  IgG coated allergens are then cleared by macrophages  Unfortunately desensitization does not completely eliminate immediate hypersensitivity reactions, they reduce symptoms  Further, life-threatening anaphylaxis has been known to occur from desensitization therapy itself!
  • 23. Anesthesia and Anaphylaxis  Dramatic hypotension and CV collapse may be the only signs under general anesthesia  Vasodilation  Decreased Tissue Perfusion  Shock  Bronchospasm  Laryngeal Edema  Vomiting/Esophageal Spasm  Most reactions occur within 5-10 minutes  Proof of anaphylaxis: Increased plasma tryptase within 1-2 hours of the suspected event  Pre-administered antihistamines to mask IgE-mediated anaphylaxis? No  Plasma histamine returns to baseline within 30-60 minutes of the event  Operating Room treatment (ADULTS):  Discontinue Anesthetic Agents  100% FiO2 – intubate/support ventilation  Treat Hypotension – Fluids, Pressors  Epinephrine – 50-100mcg IV, or 0.5-1mg IV in CV collapse  Antihistamines – H1 Diphenhydramine 50mg IV, H2 Ranitidine 50mg IV  Corticosteroids – Hydrocortisone 250mg-1gm IV vs Methylprednisolone 1-2gm IV  Bronchodilators – Albuterol PRN  Consider postponing extubation – cuff leak?
  • 24. Anesthesia and Anaphylaxis: Pediatrics WHAT WILL YOU SEE? RASH, BRONCHOSPASM, HYPOTENSION • Increase O2 to 100% • Remove suspected trigger(s) • Ensure adequate ventilation/oxygenation • If HYPOtensive, turn off anesthetic agents • To restore intravascular volume: NS or LR 10-30 mL/kg IV/IO rapidly • To restore BP and ↓mediator release: Epinephrine 1-10 MICROgrams/kg IV/IO, as needed, may need infusion 0.02-0.2 MICROgrams/kg/min • Additionally, can give 10MICROgrams/kg IM for depo effect (lingering effects of Epi after stimulus has been removed) • To ↓ bronchoconstriction Albuterol (Beta-agonists) 4-10 puffs • To ↓ mediator release Methylprednisolone 2 mg/kg IV/IO (MAX 100 mg) • To ↓ histamine-mediated effects: Diphenhydramine 1 mg/kg IV/IO (MAX 50 mg) • To ↓ effects of histamine: Famotidine or Ranitidine 0.25 mg/kg IV- 1 mg/kg IV • If anaphylactic reaction requires laboratory confirmation, send mast cell tryptase level within 2 hours of event
  • 25. EpiPen/EpiPen JR News  EpiPen (0.3mg) dose vs EpiPen JR (0.15mg) dose  2-pack price changes (480% increase!!)  2004> $83.46  2007> Mylan purchases drug from Merck  10/2015> Sanofi US voluntarily recalls Auvi-Q auto- injector d/t inaccuracies with dose injected  Teva and Adamis auto-injectors not approved by the FDA  2016> $608.61  The New York Times reports (9/16/2016)  Mylan working to have the drug placed on the Federal Preventative List (meaning no co-pay)  Mylan offers a co-pay discount program  Mylan contributes to many political campaigns, patient advocacy groups, and physician groups  CNN.com reports (10/27/2016)  Auvi-Q to re-enter market in first half of 2017
  • 26. FPIES Food Protein-Induced Enterocolitis Syndrome  Epidemiology  Non-IgE/T-cell mediated GI food hypersensitivity  Prevalence is unknown, but it is rare (0.3% of population in an Israeli study)  Non-Familial  Some studies report slightly more common in boys (52%-60%)  80% of FPIES children are multiple reactors/atopic  90% of children diagnosed outgrow by age 3  Often begins in infancy with introduction of Cow’s milk/Soy and solid foods (can be delayed in breastfed children)  Triggers  RICE, oat, and barley  Chicken, turkey, and egg white  Green pea  Peanut  Sweet potato, white potato, and corn  Fruit protein  Fish and shellfish
  • 27. FPIES  During episode, Labs show elevated WBC, acidosis, methemoglobinemia, thrombocytosis, hypoalbuminemia  There are NO diagnostic/predictive tests except OFC  Negative SPTs  Negative sIgE  APT??  Often mis-diagnosed/missed on evaluation and physical exam  Regular follow-up with specialist: GI, Allergist, PT/OT/ST  ACUTE  Repetitive, projectile emesis 1-3hrs after food ingestion  Lethargy  Pallor/Ashen in appearance  Diarrhea with blood/mucous 2- 10hrs after ingestion  Hypothermia  Dehydration  Hypotension/Shock • CHRONIC • Intermittent emesis • Bloody diarrhea • Poor wt gain/wt loss • Failure to Thrive • Abdominal distension • Irritability • Same as Acute
  • 28. FPIES Management Trigger food elimination/Strict Allergen Avoidance  First Line/Acute  REMEMBER: EpiPen won’t help!  Fluid resuscitation  Single Dose Steroids  Zofran  OFC  Considered the ‘gold-standard’, but are not required for diagnosis  0.15-0.3g protein/kg body weight in 3 doses every 15-20min  50% reactive OFC requires fluid resuscitation via IV  Q18-24months/Follow-Up  Delayed Introduction/At-Home Food Trial  Avoid grains, legumes, and poultry until age 1  Tolerance of one food in each group is often a good indicator of ‘safes’  Soy – legumes  Oat – grains  Chicken - poultry  Breastfeeding partially digests and processes the proteins  Protects against CM/Soy FPIES, but not Solid Food FPIES  Mother’s elimination diets No Sharing Food, No Restaurant Food, No Party Food Preschool – allergy table with teacher supervision & separate preparation ALLERGENS can be found in medication, vaccines, cosmetics, craft materials, bubbles, sunscreen/bug spray, cleansers, lotions, soaps, and diaper cream (ingredient and cross contamination)
  • 29.
  • 30. Anesthesia and FPIES  Operative Scenario: A 2yo patient with FPIES to milk, rice, oat, and soy presents for endoscopy.  Concerns?  Changes in the plan of care?  Changes in your hand-off procedures?
  • 31. EoE: eosinophilic esophagitis  Chronic esophageal dysfunction caused by T-cell inflammatory response to food/environmental allergens  Activated eosinophils -> cytokine release -> attack healthy tissue repeatedly -> epithelial/esophageal injury  Endoscopic Features/Histology Reports are characteristic but not diagnostic (6yr delay in diagnosis reported in one study)  Pediatrics – mostly inflammatory; dysphagia (inaccurately described), emesis, abdominal pain, GERD  Adults – both inflammatory and fibrostenosis; dysphagia and food impaction  Most pts have atopic history  IgE food allergies  Allergic Rhinitis  Asthma  Contact Dermatitis COMMON TRIGGERS MILK wheat, egg, soy, nuts, seafood corn, chicken
  • 32. EoE Treatment  IgE Allergy Testing – SPT, sIgE, APT  Dietary restriction  PEDS: hypoallergenic AA-based formula and minimal OFC added solid foods  Concerns: feeding difficulties (N/OG-Tube, G/J-Tube), fear, isolation  Topical Corticosteroids  Fluticasone (aerosolized/swallowed)  Budesonide (suspension vs nebulizer)  Maintenance?  Esophageal Dilation  New Therapies in Clinical Trials  PPIs  Monoclonal Antibody therapy at IL-5 – Mepolizulab (Nucala) and others  Mast Cell Stabilizer - Cromolyn Sodium  CysLT1 receptor antagonist – Montelukast (Singulair)  Angiotensin II receptor blockers – Losartan
  • 33. EoE and Anesthesia  Upper Endoscopy/Biopsy  Foreign Body Extraction  Esophageal Dilation  Pediatric G-tube placement
  • 34. OAS: Oral Allergy Syndrome  Pollen Food Hypersensitivity Syndrome  Considered ‘mild’ IgE reaction limited to the oropharynx  Pruritus  Tingling  Erythema  Swelling of lip, oral mucosa, throat, or tongue  Patient has environmental/pollen allergies and cannot eat fruits/vegetables with pollen allergen on or in the fruit  Most common with raw or uncooked fruit/vegetable  A Class 2 Type of Food Allergy  In 3% of patients, OAS causes systemic reaction or anaphylaxis
  • 35. Latex-Fruit Syndrome  Food (or seeds) with clinical or immunological cross-reactivity with latex proteins  2002 study shows 30-50% of patients with NRL allergy also have some food hypersensitivities (Wagner and Breiteneder)  IgE vs Non-IgE mediated Food Allergy concerns? • High: Avocado, Banana, Chestnut, Kiwi • Moderate: Apple, Carrot, Celery, Melons, Papaya, Potato, Tomato • Low/undetermined (40): Apricot, Buckwheat, Cassava/Manioc, Castor bean, Cherry, Chick pea, Citrus fruits, Coconut, Cucumber, Dill, Eggplant/Aubergine, Fig, Goji berry/Wolfberry, Grape, Hazelnut, Indian jujube, Jackfruit, Lychee, Mango, Nectarine, Oregano, Passion fruit, Peach, Peanut, Pear, Peppers (Cayenne, Sweet/bell), Persimmon, Pineapple, Pumpkin, Rye, Sage, Strawberry, Shellfish, Soybean, Sunflower seed, Tobacco, Turnip, Walnut, Wheat, Zucchini www.latexallergyresources.org
  • 36. Gluten  Gluten is a protein found in grains: wheat, rye, barley, and triticale (wheat/rye cross)  Those with Celiac have to specifically avoid Gluten – even trace amounts can cause a reaction  Those who are symptomatic with gluten but do not have Celiac have Non-Celiac Gluten Sensitivity  Cross-contamination during manufacturing  Vitamins lost with Gluten-Free diet: iron, calcium, fiber, thiamin, riboflavin, niacin, folate
  • 37. MSG  Monosodium glutamate  A meat flavor enhancer often found in Chinese and Asian foods  Reported System Complex – myalgia, nausea, neck pain, backache, sweating, flushing, chest tightness  Difficult to reproduce in OCTs
  • 38. Food Allergies and Propofol  Emulsion contains soybean oil, egg lecithin, and glycerol  Soy and Egg Allergy – contamination during processing  Peanut Allergy – cross-reactivity between soy and peanut: review from 2000 shows a low rate of cross-reactivity  Allergy is thought to be IgE mediated with the 2-isopropyl-group as the suspect epitope (multiple studies)  (2001) Australia Peds study: 28 egg-allergic children with 43 propofol cases; one atopic child with egg anaphylaxis got erythema/urticaria, confirmed propofol allergy via SPT/sIgE  (2013) Spanish study: 60 EoE pts had 404 endoscopies with propofol; 86% had IgE to egg, soy, or peanut via SPT/sIgE (35% with clinical allergy); No reactions reported
  • 39. Food Allergies and Propofol  (2016) Denmark study (BJA):  Study A: 273 pts with suspected intra-op reactions  154 propofol-exposed pts had SPTs and IV challenge  4 pts tested positive for propofol allergy – but none had allergies to egg, soy, or peanut  Study B: 520 pts with +sIgE to egg, soy, or peanut retrospectively reviewed  171 retrieved records from 99pts – no reactions found  “No evidence for contraindications to the use of propofol in adults allergic to egg, soy, or peanut”  (2016) Polish/Czech review of evidence:  ‘References demonstrating safe use of propofol in food allergy pts’  5 retrospective studies, 1 lit review, and 1 consensus statement, includes adults and pediatrics  ‘References demonstrating a potential allergic reaction to propofol’  8 case reports and 1 retrospective study  Limited data does not support avoiding propofol
  • 40. Q&A Below I have listed food allergies/reaction. If a patient presents with the allergy, would you administer propofol? 1. Peanut – rxn: anaphylaxis 2. Soy – rxn: rash/vomiting 3. Egg – rxn: hives 4. Egg – rxn: FPIES 5. Milk – rxn: causes EoE
  • 41. NPO Guidelines and Food Allergies ASA Guidelines 2H – clear liquids 4H – breastmilk 6H – non-human milk, formula, light meal 8H – full, high-fat meal NPO after midnight  Likely originated in 1946 with an obstetric study on pulmonary aspiration by Mendelson  1946 study found 0.15% OB patients who received GA had pulmonary aspiration compared to 0.006% in a 2002 study  Gastric volume and/or pH is unrelated to fasting duration Benefits of following Guidelines • Better hydration status • Improved hemodynamic stability • Reduction in surgical stress response Adverse Effects of Prolonged NPO status • Hunger, thirst, discomfort, crying • Hypoglycemia • Dehydration, hypovolemia • Electrolyte imbalance, ketosis • Malnutrition • General malaise • Delayed recovery, wound healing • Immune suppression, infection susceptibility
  • 42. Evidence-Based Practice or Time-Honored Tradition?  (2002) Crenshaw and Winslow – 155 adults, 14hrs solids, 12hrs liquids  (2008) Crenshaw and Winslow follow-up – 275 adults, 14hrs solids, 11hrs liquids  (2011) Engelhart et. Al – 1350 pediatrics, 12hrs solids, 8hrs liquids  (2013) Arun and Korula (INDIA) – 50 pediatrics, ~11hrs solids, ~9hrs liquids  (2013) Williams et. Al – 219 pediatrics  Average Fasting Times to Surgery/Procedure time  Solids: 14.08+6.28hrs  Breastmilk: 9.82+6.6hrs  Clears: 12.61+5.88hrs  Non-compliance w/ guidelines based on MD order  62% for solids  100% for breastmilk  97% for clears  (2016) Brunet-Wood et. Al – 53 pediatrics  No patients allowed clears 2hrs prior and 70% were NPO for 8+ hrs prior  Found 80% (complex) and 65% (non-complex) of pre-op NPO times not within guidelines  Also covered post-operative NPO times: time to first nutrition in complex cases is 63.6hrs and 23.8hrs for non-complex cases
  • 43. NPO True or False?  My 64yo patient can have a cup of black coffee at 0600 for hernia surgery at 0900.  The same patient is obese with diabetes and GERD, and added cream to the coffee. What time can the surgery start?  My 18month old patient can have apple juice at 0700 for oral surgery at 0930.  My 5month old patient can be nursed at 0500 for a T&A at 0800.  The ENT surgeon has been delayed and cannot arrive until 1000. It is 0630 and the patient has arrived in pre-op. It is ok for the parent to give the child Pedialyte in a bottle.  As a practitioner, I keep my patients NPO for too long.  Pre-op will page me every 5 minutes if we change the rule NPO after midnight.
  • 44. Our FPIES Journey  6mo  7mo  10mo  2.5yr  3yr
  • 45. Questions, Comments, or References Email: genaleeburnett@gmail.com

Hinweis der Redaktion

  1. MAST CELL – out of the capillaries BASOPHILS –inside the blood stream
  2. Immune response is a protective phenomenon against any foreign antigen Humoral or Cell-Mediated Hypersensitivity is an exaggerated immune response detrimental to the body. Hence immune response is a double edged sword; at one hand it protects the body, on the other hand it harms the body depending upon the nature of the antigen, antibody produced, and susceptibility of the person. Hypersensitivity can be induced by environmental antigens in factitious agents, chemicals and drugs.
  3. Sensitization Exposure – excess IgE antibody produced Active Exposure – Mast cells covered in all these excess IgE antibodies release histamine when re-exposed to the allergen HISTAMINE, SEROTONIN, PROSTAGLANDINS, LEUKOTRIENES The development of immediate hypersensitivity is a two step process: Sensitization phase - When the immune system of atopic individuals is first exposed to an allergen, B lymphocytes produce excess IgE antibodies. These antibodies have a strong affinity for mast cells (and basophils) and coat the surface of these cells by binding to receptors for the heavy chain portion of the IgE molecule (IgE Fc Receptors). Activation phase - Later when sensitized mast cells, coated with IgE antibodies, are re-exposed to the allergen, they rapidly release vasoactive mediators such as histamine and serotonin from cytoplasmic granules. A requirement for activation of mast cells appears to be the cross-linking of surface IgE molecules by the inciting allergen. Later, prostaglandins and leukotrienes are also synthesized from the mast cell plasma membrane. Among other things, this leads to the accumulation of neutrophils and eosinophils at the site of antigenic stimulation.. This stage of the immediate hypersensitivity reaction is sometimes referred to as a late phase response. The clinical manifestations of immediate sensitivity reactions depend on whether the antigen is introduced into the skin, lung, or blood stream. Immediate Hypersensitivity Reactions in the Lung: Immediate hypersensitivity reactions to inhaled allergens can lead to bronchospasm and some forms of asthma. Other drugs such as epinephrine and theophylline which relax bronchial smooth muscle or drugs such as cromolyn and corticosteroids which block mast cell degranulation are also effective Not all asthma is allergic or IgE mediated. In some people the smooth muscle cells lining the airways are "hyper-reactive" and constrict in response to non-immunologic stimuli.
  4. Histamine seems to be the primary mediator of immediate hypersensitivity reactions involving the skin and mucous membranes These reactions can be blocked by the administration of anti-histamines Histamine causes dilation of capillary venules which results in increased blood flow to the skin (redness and warmth) with the extravasation of plasma into the interstitial spaces (wheal) Histamine does not produce significant bronchospasm. Instead, it is the late phase mediators prostaglandins and leukotrienes that are responsible for the intense bronchospasm and increased mucous secretion of immediate hypersensitivity reactions in the lung. The late phase response in the skin seems to be one mechanism for producing certain forms of eczema. This reaction is not blocked by antihistamines.
  5. There are multiple processes by which biologically active mediators can be generated to produce an anaphylactoid reaction. There are 2 pathways: Classical: initiated through IgG or IgM (transfusion reactions) or plasmin. Alternative pathway: activated by lipopolysaccharides (endotoxin), drugs, and Xray contrast dye, vascular graft material, latex or latex-containing products and nylon membranes on bubble oxygenators. Blood coagulation, fibrinolytic or complement activation all are apart of the classic route. Histamine can be liberated independent of immunologic reactions. Mast cells and basophils release histamine in response to chemicals or drugs. What makes patients susceptible to release of histamine in response to drugs in unknown but hereditary and environment may play a role. Pre-treatment with diphenhydramine, ranitidine and corticosteriods has been reported to be useful for reducing anaphylactoid symptoms associated with contrast reactions (and narcotics) Non-IgE mediated "Allergy": There are a number of substances which can directly activate mast cells in the absence of IgE and produce so called anaphylactoid (anaphylaxis-like) reactions. They include morphine, shellfish, iodinated radiocontrast agents, certain berries, and aspirin. Anaphylactoid reactions have the same clinical significance as IgE mediated anaphylaxis. They are also managed the same way.
  6. TYPE IV: T CELL-MEDIATED HYPERSENSITIVITY: Delayed Type Hypersensitivity (DTH) reactions are mediated by CD4 Helper T Lymphocytes. Injury results from the hydrolytic enzymes and toxic oxidants secreted by macrophages activated by CD4 lymphocytes. Later, chronic inflammation (manifested by granuloma formation) and fibrosis dominates the clinical picture. Contact dermatitis - Poison ivy, some drugs, and occasionally cosmetics can bind to certain cell surface proteins and become the target for CD4 Helper lymphocytes producing local inflammation, fibrosis and edema. FPIES
  7. NOTE:
  8. REFERENCE: The state of GA student learning website
  9. Profits exceed 1Billion last year with 99% of the market purchasing this product exclusively Heather Bresch – chief exec of Mylan – the daughter of WV Senator Most of Mylan’s employees are major contributors to Capitol Hill and are considered ‘well-connected’
  10. First described 4 decades ago MEN?? Acts similarly to Asthma – multiple ongoing clinical trials of medications
  11. Monoclonal Antibody therapy – no symptom improvement but reduction in effector cell (mast cells and eosinophil counts) proliferation at esophagus found
  12. Concerns – friable tissue/perforation, aspiration
  13. Lecithin – a purified egg phosphatide (lipid vehicle) – NOT a protein (greek word meaning yolk)