ATI RN
ATI Pharmacology Quiz 240 Questions
Extract:
Question 1 of 5
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?
Correct Answer: C
Rationale: The correct answer is C: Beta blockers. Beta blockers decrease heart rate and contractility by blocking the effects of catecholamines on beta receptors, leading to reduced blood pressure. In post-myocardial infarction patients, beta blockers improve survival rates by reducing myocardial oxygen demand and protecting against arrhythmias. ACE inhibitors (
A) primarily reduce blood pressure by inhibiting the renin-angiotensin-aldosterone system. Vasodilators (
B) directly dilate blood vessels to lower blood pressure but do not affect heart rate or contractility. Diuretics (
D) promote fluid excretion to reduce blood volume and pressure, but do not specifically target heart rate or contractility.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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