Hypertension Flashcards
4 classes of hypertension drugs
Angiotensin converting enzyme inhibitors
Calcium channel blockers
Thiazide or thiazide like diuretics
Angiotensin receptor blockers
Name three types of angiotensin converting enzyme inhibitors
Ramipril
Lisinopril
Perindopril
Name two types of calcium channel blockers
Amlodipine
Felodipine
Name 2 examples of thiazide or thiazide-like diuretics
Bendro- flumethiazide
Indapamide
Name 3 types of angiotensin receptor blockers
Losartan
Irbesartan
Candesartan
What is the primary mechanism of action of angiotensin converting enzyme inhibitors?
Inhibit the angiotensin converting enzyme. Prevent the conversion of angiotensin I to angiotensin II
What is the primary mechanism of action of calcium channel blockers?
Block L type calcium channels - predominantly on vascular smooth muscle
Decrease in calcium influx, with downstream inhibition of myosin light chain kinase and prevention of cross bridge formation.
What is the primary mechanism of action of thiazie or thiazide like diuretics?
They block Na+, Cl- co transporter in the early DCT. Therefore Na+ and Cl- reabsorption is inhibited.
Decreasing osmotic gradient for water reabsorption
What is the primary mechanism of angiotensin receptor blockers?
Act as non competitive antagonists at AT1 receptor ( found on kidneys and vasculature)
What is the drug target of angiotensin converting enzyme inhibitors?
Angiotensin converting enzyme
What is the drug target of calcium channel blockers?
L- type calcium channel
What is the drug target of thiazide or thiazide like diuretics?
Sodium/ Chloride co transporter in early DCT
What is the drug target of angiotensin recpetor blockers?
Angiotensin recpetor found on kidneys and on the vasculature
What are the main side effects of angiotensin converting enzyme inhibitors?
Cough
Hypotension
Hyperkalaemia
Foetal Injury (avoid in pregnant women)
Renal failure ( in patients with renal artery stenosis)
Urticaria/ Angioedema
What are the main side effects of calcium channel blockers?
Ankle oedema
Constipation
Palpitations
Flushing/Headaches