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 B
Explanation
A. The normal therapeutic range for lithium is typically considered to be between 0.6-1.5 mEq/L. Levels above or below this range may indicate the need for dosage adjustment or potential toxicity.
B. The normal therapeutic range for lithium is typically considered to be between 0.6-1.5 mEq/L. Levels above or below this range may indicate the need for dosage adjustment or potential toxicity.
C. The normal therapeutic range for lithium is typically considered to be between 0.6-1.5 mEq/L. Levels above or below this range may indicate the need for dosage adjustment or potential toxicity.
D. The normal therapeutic range for lithium is typically considered to be between 0.6-1.5 mEq/L. Levels above or below this range may indicate the need for dosage adjustment or potential toxicity.
Correct Answer is D
Explanation
A. Suspended release formulations typically have a slower onset of action compared to sublingual administration.
B. Transdermal patches provide a slow, continuous release of nitroglycerin and do not offer rapid onset.
C. Topical ointments have a slower onset of action compared to sublingual administration.
D. Sublingual administration of nitroglycerin provides the most rapid onset of action due to direct absorption through the oral mucosa.
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