heart failure drugs Flashcards
what is the MOA of Digoxin
MOA: Inhibits Na+/K+ ATPase, leading to increased intracellular Na+ and Ca++, which increases the force of contraction. Decreases AV node conduction velocity.
what are the indications for digoxin
Indications: Congestive heart failure (CHF), supraventricular tachycardia (except WPW syndrome).
what are the adverse effects of digoxin
Adverse Effects: GI (anorexia, nausea, vomiting), CNS (headache, disorientation, visual halos), cardiovascular (PVCs, AV block, sinus bradycardia).
True or false: Digoxin is contraindicated in WPW syndrome
TRUE it is contraindicated in WPW
what is the MOA of dobutamine
MOA: Sympathomimetic that primarily acts on β1-adrenergic receptors, increasing heart contractility and output.
what are the indications for dobutamine
actue decompensated heart failure
what are the adverse effects of dobutamine
tachycardia, arrhythmias, hypotension
what are the contraindications of dobutamine
hypersensitivity to dobutamine
What is the MOA of milrinone
MOA: Inhibits phosphodiesterase (PDE) leading to increased cAMP, resulting in positive inotropy and vasodilation.
What are the indications for milrinone
Short-term treatment of severe heart failure
what are the adverse effects of milrinone
hypotension, thrombocytopenia (with inamrinone)
what are the contraindications of milrinone
hypersensitivity to the drug, severe obstructive aortic or pulmonary valvular disease
what’s the MOA of Enalapril/Lisinopril
MOA: Inhibits the angiotensin-converting enzyme, reducing angiotensin II levels and decreasing aldosterone secretion, leading to vasodilation and reduced blood pressure.
what are the indications for Enalapril and lisinopril
heart failure an HTN
what are the adverse effects of enalapril/lisinopril
cough, hyperkalemia, hypotension, renal impairment
what are the contraindications for enalapril and lisinopril
pregnancy and bilateral renal artery stenosis
MOA of Valsartan/Candesartan
MOA: Blocks angiotensin II receptors, preventing vasoconstriction and aldosterone-secreting effects