A patient is prescribed metoprolol in the treatment of stable angina.
What is the best outcome measure of decreased cardiac workload due to metoprolol for the nurse to evaluate?
Patient's heart rate is 62 and regular.
Patient is able to lie flat without reporting difficulty breathing.
Patient does not report dyspnea after climbing one flight of stairs.
Patient has weight loss of 3 lbs (1.4 kg) over 2 weeks.
The Correct Answer is A
Choice A rationale
Metoprolol decreases cardiac workload by reducing heart rate and myocardial oxygen demand. A heart rate of 62 is within normal limits, demonstrating effective beta-blocker action and improved cardiac efficiency.
Choice B rationale
Lying flat without difficulty breathing reflects improved respiratory status, which is more related to pulmonary management, not directly indicative of reduced cardiac workload or beta-blocker efficacy.
Choice C rationale
Absence of dyspnea after climbing stairs suggests improved physical fitness but does not directly measure the cardiac effects of metoprolol, which targets heart rate reduction and myocardial oxygen use.
Choice D rationale
Weight loss is related to overall health improvement or dietary changes rather than specific effects of metoprolol, which primarily impacts heart rate and cardiac oxygen consumption.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["66.7"]
Explanation
Step 1 is (1600 mL ÷ 24 hours).
Answer is 66.7 mL/hr.
Correct Answer is B
Explanation
Choice A rationale
Reviewing the safety data sheet does not directly alleviate the immediate chemical injury or prevent further damage. Immediate irrigation of the eyes is the priority after chemical exposure to minimize damage to the ocular surface.
Choice B rationale
Continuous irrigation removes chemical agents from the eyes and prevents further damage. Ensuring a pain-free state and checking pH confirm the removal of irritants, essential for preventing deeper eye tissue damage.
Choice C rationale
Miotic drops reduce intraocular pressure but do not address acute chemical injury. Pain relief is secondary to irrigating and neutralizing pH, which directly prevents ongoing tissue damage and irritation.
Choice D rationale
Assessing visual acuity and vital signs is important but secondary to preventing further chemical penetration. Immediate irrigation prevents damage progression and is prioritized over assessments during the acute phase of exposure.
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