Which statement correctly describes the S4 heart sound?

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Multiple Choice

Which statement correctly describes the S4 heart sound?

S4 is an atrial gallop produced by the atrial contraction forcing blood into a noncompliant, stiff ventricle. It occurs late in diastole, just before S1, and is best heard with the bell at the apex in the left lateral decubitus position. This sound signals decreased LV compliance (diastolic dysfunction) and is classically seen with conditions like long-standing hypertension with LV hypertrophy, aortic stenosis, or restrictive cardiomyopathy, and it can be more noticeable in older adults. The correct description uses the Tennessee gallop to describe S4 and notes the stiff ventricular wall, which aligns with the physiology of the sound. The other options mix incorrect mnemonic associations or pair an S3-associated finding (increased fluid status/early diastolic filling) with the term for S4, so they don’t fit S4’s characteristic timing and mechanism.

S4 is an atrial gallop produced by the atrial contraction forcing blood into a noncompliant, stiff ventricle. It occurs late in diastole, just before S1, and is best heard with the bell at the apex in the left lateral decubitus position. This sound signals decreased LV compliance (diastolic dysfunction) and is classically seen with conditions like long-standing hypertension with LV hypertrophy, aortic stenosis, or restrictive cardiomyopathy, and it can be more noticeable in older adults.

The correct description uses the Tennessee gallop to describe S4 and notes the stiff ventricular wall, which aligns with the physiology of the sound. The other options mix incorrect mnemonic associations or pair an S3-associated finding (increased fluid status/early diastolic filling) with the term for S4, so they don’t fit S4’s characteristic timing and mechanism.

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