auscultatory gap

(redirected from Auscultory gap)

gap

 [gap]
an opening or hiatus.
anion gap the concentration of plasma anions not routinely measured by laboratory screening, accounting for the difference between the routinely measured anions and cations and equal to the plasma sodium − (chloride + bicarbonate); used in the evaluation of acid-base disorders.
auscultatory gap a period in which Korotkoff sounds disappear during auscultation of a patient' s blood pressure.

aus·cul·ta·to·ry gap

the period during which Korotkoff sounds indicating true systolic pressure fade away and reappear at a lower pressure point; responsible for errors made in recording falsely low systolic blood pressure, especially in hypertensive patients, of up to 25 mm Hg, and avoided by pumping the cuff 30 mm Hg beyond palpable systolic pressure.
Synonym(s): silent gap

auscultatory gap

time in which sound is not heard in the auscultatory method of measuring blood pressure with a sphygmomanometer, occurring particularly in hypertension and in aortic stenosis.

aus·cul·ta·to·ry gap

(aws-kŭl'tă-tōr-ē gap)
The period during which Korotkoff sounds indicating true systolic pressure fade away and reappear at a lower pressure point; responsible for errors made in recording falsely low systolic blood pressure, especially in hypertensive patients, of up to 25 mmHg, and avoided by pumping the cuff 30 mmHg above palpable systolic pressure.