Question

What is an important parameter for defining abnormal blood pressure, and how is it determined?

A) Body mass index (BMI); measured using a scale
B) Heart rate; measured using a pulse oximeter
C) Diastolic pressure; determined by listening for heartbeats
D) Systolic pressure; determined when the first Korotkoff sound is heard

Answer 1

Diastolic pressure, which is determined by listening for the cessation of Korotkoff sounds using a stethoscope and sphygmomanometer, is an important parameter for defining abnormal blood pressure.

Step-by-step explanation:

An important parameter for defining abnormal blood pressure is the diastolic pressure, which is determined by listening for the absence of heartbeats using a stethoscope and sphygmomanometer. Diastolic pressure represents the lowest pressure within the arteries, which occurs when the heart's ventricles are at rest between beats. The measurement is noted when blood flow is continuous and the Korotkoff sounds disappear, indicating that cuff pressure is lower than the diastolic pressure within the arteries. Blood pressure readings, in general, consist of systolic pressure over diastolic pressure, such as the standard '120/80' mm Hg.