CMC Cardiac Pharmacology & Medications Flashcards
6 cards from real CMC practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 6 CMC Cardiac Pharmacology & Medications flashcards as text
Clopidogrel prevents platelet aggregation by irreversibly blocking which receptor?
Answer: P2Y12 ADP receptor
Clopidogrel irreversibly blocks the P2Y12 ADP receptor, preventing ADP-induced platelet activation and aggregation.
In warfarin-related life-threatening bleeding, which agents are used for rapid reversal?
Answer: Vitamin K plus 4-factor prothrombin complex concentrate
Warfarin emergencies require Vitamin K (slow, sustained reversal) plus 4-factor PCC (rapid replacement of clotting factors).
Hydralazine combined with isosorbide dinitrate is indicated in heart failure patients who cannot tolerate which drug class?
Answer: ACE inhibitors or ARBs
Hydralazine-nitrate therapy is an evidence-based alternative for HF patients intolerant of renin-angiotensin system blockers.
Sacubitril/valsartan (Entresto) improves outcomes in HFrEF by combining an ARB with inhibition of which enzyme?
Answer: Neprilysin
Sacubitril inhibits neprilysin, preventing degradation of natriuretic peptides, while valsartan blocks angiotensin II receptors.
What is the specific antidote used to reverse unfractionated heparin-induced bleeding?
Answer: Protamine sulfate
Protamine sulfate is a positively charged protein that binds and neutralizes negatively charged heparin, reversing its anticoagulant effect.
PCSK9 inhibitors like evolocumab lower LDL cholesterol by which mechanism?
Answer: Preventing PCSK9 from degrading LDL receptors, increasing hepatic LDL clearance
PCSK9 inhibitors prevent PCSK9 from degrading LDL receptors, allowing more receptors to clear LDL from circulation.