Which of the following classes of medication decreases heart rate, contractility, and blood pressure, and is used to increase survival rates in post-myocardial infarction patients?
ACE inhibitors
Vasodilators
Beta blockers
Diuretics
The Correct Answer is C
A. ACE inhibitors primarily affect blood pressure and heart remodeling but do not directly decrease heart rate or contractility.
B. Vasodilators mainly lower blood pressure by expanding blood vessels and do not primarily affect heart rate or contractility.
C. Beta blockers decrease heart rate, contractility, and blood pressure, and are specifically used to improve survival after a heart attack by reducing the heart's workload and oxygen demand.
D. Diuretics primarily reduce blood pressure by decreasing blood volume but do not directly decrease heart rate or contractility.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. High cholesterol can lead to the buildup of plaque in the arteries, which can narrow the blood vessels and decrease blood flow to the heart, increasing the risk of heart disease.
B. High cholesterol does not directly damage the heart muscle but can contribute to conditions like atherosclerosis, which can affect heart function.
C. High cholesterol does not directly thicken the blood but can contribute to the formation of blood clots when combined with other factors.
D. High cholesterol does not typically interfere with the conduction system of the heart but can contribute to conditions like coronary artery disease.
Correct Answer is A
Explanation
A. Stable angina is predictable and typically occurs with exertion or emotional stress and is relieved with rest or nitroglycerin. Unstable angina is less predictable and more serious, occurring at rest, with minimal exertion, or worsening pattern from stable angina.
B. This answer misrepresents the characteristics and causes of stable and unstable angina, mixing definitions or incorrectly assigning causes.
C. This answer misrepresents the characteristics and causes of stable and unstable angina, mixing definitions or incorrectly assigning causes.
D. This answer misrepresents the characteristics and causes of stable and unstable angina, mixing definitions or incorrectly assigning causes.
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