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 B
Explanation
Choice A rationale
Implementing a smoking cessation program, while beneficial for overall health and cardiovascular risk reduction, is not the primary therapeutic goal for secondary hypertension. Secondary hypertension is high blood pressure caused by an underlying condition. Therefore, the primary goal is to treat the underlying condition.
Choice B rationale
Treating the specific etiological disease is the primary therapeutic goal for secondary hypertension. By treating the underlying cause, blood pressure can often be lowered or returned to normal.
Choice C rationale
Initiating a rapid weight-loss program is not the primary therapeutic goal for secondary hypertension. While weight loss can help lower blood pressure in general, the primary goal in secondary hypertension is to treat the underlying cause.
Choice D rationale
Starting a rigorous exercise regimen, while beneficial for overall health and cardiovascular risk reduction, is not the primary therapeutic goal for secondary hypertension. The primary goal is to treat the underlying condition causing the high blood pressure.
Correct Answer is C
Explanation
The correct answer is choice c. Carry out immediate defibrillation.
Choice A rationale:
Initiating cardiopulmonary resuscitation (CPR) is essential for a client who is unresponsive and without a pulse. However, in the presence of ventricular fibrillation, immediate defibrillation is the priority to restore a viable heart rhythm.
Choice B rationale:
Establishing intravenous (IV) access is important for administering medications during resuscitation. However, it is not the immediate priority when defibrillation is indicated.
Choice C rationale:
Immediate defibrillation is the priority action for a client with ventricular fibrillation who is unresponsive and without a pulse. Defibrillation can quickly restore a normal heart rhythm, which is critical in saving the client’s life.
Choice D rationale:
Checking the client’s latest electrolyte levels can provide valuable information for ongoing treatment but is not the immediate priority in an emergency situation where defibrillation is indicated. Immediate action to restore the heart rhythm is more critical.
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