Friday, 12 April 2019

Q. A client is recovering from an acute myocardial infarction (MI). During the first week of the client's recovery, the nurse should stay alert for which abnormal heart sound?

A. Opening snap
B. Graham Steell's murmur
C. Ejection click
D. Pericardial friction rub



Correct Answer: D

Explanation: A pericardial friction rub, which sounds like squeaky leather, may occur during the first week following an MI. Resulting from inflammation of the pericardial sac, this abnormal heart sound arises as the roughened parietal and visceral layers of the pericardium rub against each other. Certain stenosed valves may cause a brief, high-pitched opening snap heard early in diastole. Graham Steell's murmur is a high-pitched, blowing murmur with a decrescendo pattern; heard during diastole, it indicates pulmonary insufficiency, such as from pulmonary hypertension or a congenital pulmonary valve defect. An ejection click, associated with mitral valve prolapse or a rigid, calcified aortic valve, causes a high-pitched sound during systole.

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