CCT Pharmacology & Cardiac Medications Flashcards
6 cards from real CCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CCT Pharmacology & Cardiac Medications flashcards as text
Adenosine is the drug of choice for terminating which arrhythmia?
Answer: Paroxysmal supraventricular tachycardia (PSVT)
Adenosine transiently blocks AV nodal conduction, which terminates re-entrant tachycardias that depend on the AV node such as PSVT.
ACE inhibitors are beneficial after myocardial infarction primarily because they:
Answer: Reduce ventricular remodeling and decrease afterload
ACE inhibitors block angiotensin II production, reducing afterload and preventing pathological ventricular remodeling that can lead to heart failure after MI.
Epinephrine is given during cardiac arrest primarily because it:
Answer: Increases coronary and cerebral perfusion pressure
Epinephrine is an alpha-adrenergic agonist that causes vasoconstriction, raising aortic diastolic pressure and improving coronary and cerebral perfusion during CPR.
Which of the following is the reversal agent for warfarin anticoagulation in an emergency?
Answer: Vitamin K and fresh frozen plasma (FFP)
Vitamin K restores clotting factor synthesis and FFP provides immediate clotting factors to rapidly reverse warfarin anticoagulation.
Magnesium sulfate is the treatment of choice for which life-threatening arrhythmia?
Answer: Torsades de pointes
Magnesium sulfate stabilizes the cardiac membrane and is the first-line treatment for torsades de pointes, a polymorphic ventricular tachycardia associated with prolonged QT.
Which medication is used to dissolve acute coronary thrombus during an ST-elevation MI when primary PCI is unavailable?
Answer: Alteplase (tPA)
Alteplase is a thrombolytic agent that activates plasminogen to dissolve fibrin clots, restoring coronary artery perfusion when timely PCI is not possible.