A client with angina pectoris is prescribed ranolazine (Ranexa) as an anti-anginal medication. What is the primary action of ranolazine in managing angina?
Increasing heart rate and cardiac output.
Dilating coronary arteries and improving blood flow to the heart.
Reducing myocardial oxygen demand and improving oxygen utilization.
Preventing platelet aggregation and reducing the risk of clot formation.
The Correct Answer is C
A) This choice is incorrect because ranolazine does not increase heart rate and cardiac output. Instead, it has a neutral effect on heart rate.
B) This choice is incorrect because ranolazine does not directly dilate coronary arteries. Its primary action is to reduce myocardial oxygen demand and improve oxygen utilization in the heart.
C) This choice is correct. Ranolazine is an anti-anginal medication that primarily works by reducing myocardial oxygen demand. It achieves this by inhibiting the late sodium current in cardiac cells, which helps decrease intracellular calcium levels, thereby reducing the energy required for the heart's contraction and relaxation. This results in improved oxygen utilization in the heart muscle and decreased anginal symptoms.
D) This choice is incorrect because ranolazine is not an antiplatelet medication. Its mechanism of action is related to its effects on myocardial oxygen demand and utilization, not its impact on platelet aggregation and clot formation.
Questions
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) This choice is incorrect because while aspirin is important for clients with angina, the priority teaching point is the use of nitroglycerin for chest pain relief during angina episodes.
B) This choice is incorrect because keeping a log of triggers can be helpful for managing angina, but it is not the priority teaching point regarding the immediate relief of chest pain.
C) This choice is incorrect because limiting physical activity to avoid exertion is not the primary management strategy for angina. Moderate exercise, as tolerated, is beneficial for clients with stable angina.
D) This choice is correct. Nitroglycerin is a vasodilator that helps to relax and widen blood vessels, improving blood flow and relieving chest pain during an angina episode. Teaching the client to use nitroglycerin as needed for chest pain relief is a priority in angina management.
Correct Answer is D
Explanation
A) This choice is incorrect because e-cigarettes and vaping are not considered safe alternatives to smoking and are not recommended as a way to quit smoking. They can also pose health risks to the cardiovascular system.
B) This choice is incorrect because gradually decreasing cigarette intake may not be as effective as setting a quit date and quitting smoking altogether.
C) This choice is incorrect because while nicotine replacement therapy (NRT) can be helpful for some individuals in managing cravings during the quitting process, it is not the primary recommendation. Avoiding triggers and setting a quit date are essential strategies for successful smoking cessation.
D) This choice is correct. Setting a quit date is an effective approach to quitting smoking. It allows individuals to mentally prepare for the change and commit to the process. Avoiding situations or triggers that may lead to smoking is also crucial for breaking the habit and preventing relapse.
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