A Nurse Maintains Constant Release of Pressure in the Blood

Multiple Choice

A nurse maintains constant release of pressure in the blood pressure cuff to identify the five phases of the Korotkoff sounds.At which of these points is the systolic reading obtained?

A) when a faint,clear tapping sound that increases in intensity is heard
B) when a swishing sound is heard
C) when an intense sound is heard
D) when an abrupt,distinct muffled sound is heard