B - 18. Drugs used for the treatment of hypertension II: Ca++-channel blockers and other vasodilators Flashcards
Indications for CCB
Hypertension
Angina (decreases oxygen demand and increases supply (vasodialation))
Dihydropyridines names
Nifedipine
Amlodipine
Felodipine
Nimodipine
Dihydropyridines action
Acts mainly on smooth muscle cells of vessels, causes vasodialation
Dihydropyridines SE
Reflex tachycardia in high doses
Vasodialation -> hypotension -> baroreceptors sense it and increase sympathetic firing to heart -> increased heart rate
Gingeval hyperplasia
Non-dihydropyridines names and effect
Verapamil
greater effect on heart than vessels
cGMP-mediated vasodialators names
dihydralazine
sildenafil
cGMP-mediated vasodialators action
Increase cGMP -> vasodialation
Pulmonary hypertension vasodialator
bozentan