Cardiac Drugs Flashcards
Hydralazine - mechanism?
Increases cGMP –> smooth muscle relaxation. Vasodilates arterioles > veins; afterload reduction
Hydralazine - use? 2+2
Acute severe HTN, HF, safe for pregnancy. Given with B-blocker to prevent reflex tachycardia.
Hydralazine - toxicity? (5)
Reflex tachycardia, fluid retention, headache, angina, lupus-like syndrome
Diltiazem/verapamil - mech? (4)
Block voltage-dependent L-type Ca channels of cardiac and smooth muscle –> decrease muscle contractility in heart
Decrease conduction velocity
Increase ERP
Increase PR interval
Nimodipine - mech?
Block voltage-dependent L-type Ca channels of cardiac and smooth muscle –> decrease muscle contractility in vascular smooth muscle
Nimodipine - use? (1)
Subarachnoid hemorrhage
Clevidipine - use? (1)
Hypertensive urgency or emergency
Diltiazem/verapamil - use? (4)
HTN
Angina
AFib/flutter rate control
Prevention of nodal arrhythmias
Clevidipine - mech?
Block voltage-dependent L-type Ca channels of cardiac and smooth muscle –> decrease muscle contractility in vascular smooth muscle
Nifedipine - mech?
Block voltage-dependent L-type Ca channels of cardiac and smooth muscle –> decrease muscle contractility in vascular smooth muscle
Diltiazem - side fx? (7)
Cardiac depression AV block Peripheral edema, Flushing Dizziness Constipation Gingival hyperplasia
Verapamil - side fx? (8)
HYPERPROLACTINEMIA Cardiac depression AV block Peripheral edema, Flushing Dizziness Constipation Gingival hyperplasia
Nitroprusside - use? (1)
Hypertensive emergency
Nitroprusside - mechanism?
Short acting, increase cGMP via direct release of NO
Nitroprusside - side fx?
CN toxicity
Fenoldopam - use? (1)
Hypertensive emergency
Fenoldopam - mechanism?
Dopamine D1 receptor agonist - coronary, peripheral, renal, and splanchnic vasodilation. Decreases BP and increases natriuresis.
Nitroglycerin - use? (3)
Angina, acute coronary synddrome, pulmonary edema
Nitroglycerin - mech?
Vasodilate by increasing NO in vasc smooth muscle - increase cGMP and smooth muscle relaxation. Veins more than arteries to decrease preload.
Nitroglycerin - side fx? (4)
Reflex tachycardia (tx with B-blockers)
Flushing
Headache
“Monday disease”
Isosorbide dinitrate - use? (3)
Angina, acute coronary synddrome, pulmonary edema
Isosorbide dinitrate - mech?
Vasodilate by increasing NO in vasc smooth muscle - increase cGMP and smooth muscle relaxation. Veins more than arteries to decrease preload.
Isosorbide dinitrate - side fx (4)?
Reflex tachycardia (tx with B-blockers)
Flushing
Headache
“Monday disease”
Isosorbide mononitrate - use? (3)
Angina, acute coronary synddrome, pulmonary edema