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Multiple Choice

Mitral regurgitation murmur is best described as which of the following?

Mitral regurgitation produces a holosystolic murmur that persists throughout the entirety of systole. It is heard best at the apex, which is the left midclavicular line at the fifth intercostal space, and it commonly radiates toward the left axilla due to the direction of the regurgitant jet into the left atrium. This combination of timing (systolic), location (apex), and radiation (to the left axilla) is classic for MR. A diastolic murmur at the left lower sternal border would point to a different lesion, a continuous murmur loudest at the second intercostal space suggests a patent ductus arteriosus, and radiation to the right neck is not typical for MR.

Mitral regurgitation produces a holosystolic murmur that persists throughout the entirety of systole. It is heard best at the apex, which is the left midclavicular line at the fifth intercostal space, and it commonly radiates toward the left axilla due to the direction of the regurgitant jet into the left atrium. This combination of timing (systolic), location (apex), and radiation (to the left axilla) is classic for MR. A diastolic murmur at the left lower sternal border would point to a different lesion, a continuous murmur loudest at the second intercostal space suggests a patent ductus arteriosus, and radiation to the right neck is not typical for MR.