A continuous loud hum heard loudest during diastole is described as which murmur?

A continuous loud hum heard loudest during diastole is described as which murmur?

• A. Venous hum
• B. Continuous murmur from PDA
• C. Aortic regurgitation
• D. Mitral valve prolapse

Answer: (A)

Recognizing venous hum: a benign, continuous, low-pitched murmur produced by turbulent flow in the jugular venous system. It typically persists through systole and diastole and is often loudest during diastole. It’s heard best in the supraclavicular region, usually on the right, and its characteristic feature is that it can diminish or disappear with maneuvers such as compressing the jugular vein or changing head position, which confirms its venous origin. This diastolic emphasis helps distinguish it from other murmurs. A patent ductus arteriosus murmur is also continuous, but it’s best heard at the left infraclavicular area and has a machinery quality, usually loudest around S2. Aortic regurgitation is a diastolic murmur heard best along the left sternal border, with a blowing decrescendo pattern and not continuous. Mitral valve prolapse produces a midsystolic click with a late systolic murmur, not a continuous murmur through diastole.

Recognizing venous hum: a benign, continuous, low-pitched murmur produced by turbulent flow in the jugular venous system. It typically persists through systole and diastole and is often loudest during diastole. It’s heard best in the supraclavicular region, usually on the right, and its characteristic feature is that it can diminish or disappear with maneuvers such as compressing the jugular vein or changing head position, which confirms its venous origin.

This diastolic emphasis helps distinguish it from other murmurs. A patent ductus arteriosus murmur is also continuous, but it’s best heard at the left infraclavicular area and has a machinery quality, usually loudest around S2. Aortic regurgitation is a diastolic murmur heard best along the left sternal border, with a blowing decrescendo pattern and not continuous. Mitral valve prolapse produces a midsystolic click with a late systolic murmur, not a continuous murmur through diastole.