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 B
Explanation
Choice A rationale
Symmetry of extraocular movements assesses cranial nerve function but does not relate to the corrective purpose of bifocals, which is addressing near and distant vision issues caused by presbyopia and myopia.
Choice B rationale
Bifocals correct presbyopia and myopia by combining lenses for near and distant vision in one frame. Effectiveness is assessed by evaluating improvements in both visual ranges, ensuring accommodation and refraction are properly corrected.
Choice C rationale
Cloudiness in the lens indicates cataracts, which bifocals cannot correct. Cataracts require surgical intervention, making this assessment irrelevant to determining bifocal lens effectiveness for presbyopia and myopia.
Choice D rationale
Intraocular pressure changes relate to glaucoma, not refractive issues like myopia or presbyopia. Monitoring for glaucoma requires tonometry, independent of bifocal lens evaluation.
Correct Answer is B
Explanation
Choice A rationale
The frontal lobe controls executive functions like reasoning and planning, not object identification errors. Damage here leads to issues with decision-making and voluntary movement, not misidentification of objects.
Choice B rationale
The temporal lobe processes auditory information and object recognition. Injury disrupts the brain's ability to associate visual stimuli with correct labels, causing errors like calling a pen "a key.”.
Choice C rationale
The parietal lobe processes sensory information related to touch, pain, and spatial awareness. Damage causes difficulty with spatial relations and perception but doesn't typically involve visual misidentification.
Choice D rationale
The occipital lobe handles visual processing. Damage affects vision or visual interpretation but does not impair the recognition or labeling of objects directly.
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