5. Hypertension
• Silent Killer – painless – complications
• dizziness, headache, and visual difficulties,
• It is the leading risk factor – MI, Stroke
• Responsible for the majority of emergency visits.
• Number one reason for drug prescription.
• Complications bring to diagnosis but late…
• Chronic, end organ & vascular damage
9. Pathological types of hypertension
The commonest type 95% Rare 5%
Usually above 40 years Younger age (25-53)
Slowly progressive Rabidly progressive
Long term (30 or more) Short fatal
10. Malignant Hypertension
• Rapidly progressive end organ damage.
• May complicate any type of HTN.
• Artery necrosis with thrombosis.
• Rapidly developing renal failure.
• Hypertensive encephalopathy.
• Left ventricular failure.
• less time No hypertrophy …!
11. Pathogenesis of Renovascular HTN
GF
R
Renin
Angiotensin
II
Vasoconstrictio
n P.
Resistance
Sodium
Retention
Blood
Volume
Aldosteron
e
Hypertensio
n