Which statement best describes the auscultatory gap?

• A. A silent interval that may be present between systolic and diastolic pressures
• B. An audible murmur during cuff inflation
• C. A gap in auscultation due to stethoscope malfunction
• D. An interval between diastolic and systolic pressures during measurement

Answer: (A)

The main idea here is understanding that the auscultatory gap is a silent period you can hear (or rather, not hear) when taking a manual blood pressure. As you deflate the cuff and listen for Korotkoff sounds, you may first hear sounds at the systolic pressure, then there can be a stretch where no sounds are heard, and then sounds resume as you move toward diastolic pressure. That silent interval occurs between the pressures that define systolic and diastolic values, hence it’s described as a silent interval between systolic and diastolic pressures.

This is why the statement describing a silent interval that may be present between systolic and diastolic pressures best matches auscultatory gap. It isn’t a murmur during cuff inflation, nor a simple gap caused by stethoscope malfunction, nor an interval between diastolic and systolic pressures in the measurement itself.