The nurse is caring for a patient with mitral valve disease. At which anatomic landmark will the nurse hear a heart murmur the loudest?
Fifth intercostal space, left midclavicular line
Fourth intercostal space, right sternal boarder
Third intercostal space, left midclavicular line
Second intercostal space, right sternal boarder
The Correct Answer is A
A. The fifth intercostal space at the left midclavicular line is the location of the mitral valve, where murmurs associated with mitral valve disease are best auscultated.
B. The fourth intercostal space at the right sternal border is the location for assessing the tricuspid valve, not the mitral valve.
C. The third intercostal space at the left midclavicular line is not associated with loudest auscultation of the mitral valve murmur.
D. The second intercostal space at the right sternal border is where the aortic valve sounds are best heard.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
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.
Correct Answer is A
Explanation
A. The fifth intercostal space at the left midclavicular line is the location of the mitral valve, where murmurs associated with mitral valve disease are best auscultated.
B. The fourth intercostal space at the right sternal border is the location for assessing the tricuspid valve, not the mitral valve.
C. The third intercostal space at the left midclavicular line is not associated with loudest auscultation of the mitral valve murmur.
D. The second intercostal space at the right sternal border is where the aortic valve sounds are best heard.
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