The nurse is caring for a patient diagnosed with unstable angina who is prescribed metoprolol. The patient asks the nurse, "Why do I have to take this medication?" What response by the nurse is most accurate?
"This medication will decrease how hard your heart works."
"It is prescribed to dilate your coronary arteries."
"It will prevent any irregular heartbeats."
"This medication makes your heart beat more forcefully."
The Correct Answer is A
A. Metoprolol, a beta-blocker, decreases the heart rate and reduces myocardial oxygen demand by lowering the workload on the heart, which is beneficial for managing unstable angina.
B. While metoprolol has some vasodilatory effects, its primary action is to reduce heart workload, not to dilate coronary arteries.
C. Although beta-blockers can reduce the risk of arrhythmias, the main purpose in angina management is to decrease cardiac workload.
D. Metoprolol does not make the heart beat more forcefully; instead, it decreases the force of contraction to reduce myocardial oxygen consumption.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Sharing eating utensils does not transmit HIV, as the virus is not spread through saliva.
B. Sharing razors is a high-risk activity for transmitting HIV because it can involve direct blood-to-blood contact if the razor causes cuts.
C. HIV transmission through kissing is highly unlikely due to low levels of the virus in saliva.
D. HIV cannot be spread through shared toilets, as the virus does not survive on surfaces and is not spread through casual contact.
Correct Answer is C
Explanation
A. Chronic head injury patients often struggle with processing multiple pieces of information simultaneously due to cognitive limitations.
B. Activities requiring complex strategy, like chess, are typically challenging shortly after admission and not a realistic expectation.
C. Difficulty with planning and organizing thoughts and behaviors is a common cognitive deficit in patients with chronic head injury due to impaired executive function, often resulting from damage to the frontal lobe.
D. While non-compliance can occur, it is less predictable and may not be directly linked to chronic head injury itself.
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