Cardiology Quiz #39: Cardiac Pharmacology and Pharmacotherapies

1. A 55-year-old man with a history of hypertension and recent myocardial infarction is prescribed a medication that blocks beta-1 adrenergic receptors. Which of the following effects is most likely to occur as a result of this therapy?

Question 1 of 5

2. A 68-year-old woman with chronic atrial fibrillation is started on a medication that selectively inhibits phosphodiesterase III. This action leads to increased cAMP in cardiac and smooth muscle cells, resulting in increased calcium influx into these cells. Which of the following is the primary effect of this medication? 

Question 2 of 5

3. A patient with severe systolic heart failure is prescribed a drug that mimics the action of endogenous natriuretic peptides. Which of the following outcomes is this drug most likely to produce? 

Question 3 of 5

4. A 72-year-old man with a history of chronic stable angina is prescribed a drug that inhibits the late phase of the inward sodium current in myocardial cells. This action reduces the intracellular calcium levels in these cells. Which of the following best describes the mechanism of action of this drug? 

Question 4 of 5

5. A patient is prescribed a medication that acts as an antagonist at mineralocorticoid receptors. Which of the following is a likely effect of this medication?

Question 5 of 5


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