What is a heart murmur?

What is a heart murmur?

• A. A normal heart sound
• B. An abnormal heart sound resulting from turbulence of blood flow through the heart
• C. A sound produced by valve opening
• D. A disease of the heart muscle

Answer: (B)

A heart murmur is an abnormal extra sound heard during auscultation that arises from turbulent blood flow through the heart or great vessels. This turbulence usually reflects an underlying issue such as valve narrowing (stenosis) or valve leakage (regurgitation), or other structural abnormalities that alter how blood moves through the heart. Murmurs are identified by their timing (systolic or diastolic), intensity, pitch, and where they are loudest on the chest, and they can be innocent or indicate pathology. This aligns with the concept that a murmur is not a normal heart sound like S1 or S2, and it isn’t simply a sound produced by a valve opening. It also isn’t a disease of the heart muscle itself, which would affect function but not produce a murmur as a defining feature.

A heart murmur is an abnormal extra sound heard during auscultation that arises from turbulent blood flow through the heart or great vessels. This turbulence usually reflects an underlying issue such as valve narrowing (stenosis) or valve leakage (regurgitation), or other structural abnormalities that alter how blood moves through the heart. Murmurs are identified by their timing (systolic or diastolic), intensity, pitch, and where they are loudest on the chest, and they can be innocent or indicate pathology.

This aligns with the concept that a murmur is not a normal heart sound like S1 or S2, and it isn’t simply a sound produced by a valve opening. It also isn’t a disease of the heart muscle itself, which would affect function but not produce a murmur as a defining feature.