Diltiazem (Cardizem) has been prescribed for a patient newly diagnosed with Prinzmetal’s (variant) angina. What accurate action of diltiazem should the nurse include in the teaching plan?
It increases the contractile force of the heart.
It reduces heart palpitations.
It decreases coronary artery spasms.
It prevents the formation of plaque in the coronary arteries.
The Correct Answer is C
Choice A rationale
Diltiazem does not increase the contractile force of the heart. In fact, it is classified as a negative inotrope, meaning it decreases the force of heart contractions.
Choice B rationale
While diltiazem can affect heart rhythm, it does not specifically reduce heart palpitations. Its primary effect is to slow the heart rate and relax the blood vessels.
Choice C rationale
Diltiazem is a calcium channel blocker used to manage cardiovascular conditions such as hypertension, chronic stable angina, atrial fibrillation, and Prinzmetal’s angina. It works by inhibiting the calcium influx into cardiac and vascular smooth muscle during depolarization. This results in vasodilation, or the widening of blood vessels, which can help decrease coronary artery spasms, a characteristic feature of Prinzmetal’s angina.
Choice D rationale
Diltiazem does not prevent the formation of plaque in the coronary arteries. It primarily acts to relax the blood vessels and slow the heart rate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
No explanation
Correct Answer is B
Explanation
Choice A rationale
A pleural friction rub is an audible raspy breathing sound, a medical sign present in some patients with pleurisy and other conditions affecting the chest cavity. It is not a typical symptom of cardiac tamponade.
Choice B rationale
Distended neck veins are a result of the collapsed blood vessels that should return blood to the heart. This is a common symptom of cardiac tamponade.
Choice C rationale
Widening pulse pressure occurs with valvular heart disease, not typically with cardiac tamponade.
Choice D rationale
Bradycardia, or a slower-than-normal heart rate, is not typically associated with cardiac tamponade.
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