1. Multiple Choice: Which of the following drugs is considered a first-line treatment for heart failure? A. Captopril B. Atenolol C. Digoxin D. Furosemide Correct Answer: A. Captopril Rationale: Captopril is an ACE inhibitor, which is commonly used as a first-line treatment for heart failure due to its ability to decrease blood pressure and reduce the workload on the heart. 2. True/False: Beta-blockers are primarily used for their positive inotropic effects. Answer: False Rationale: Beta-blockers are used for their negative inotropic effects, which decrease the heart's oxygen demand by slowing down the heart rate and reducing contractility.