What does a sphygmomanometer measure?

A sphygmomanometer is a medical device specifically designed to measure blood pressure. It typically consists of an inflatable cuff that is wrapped around the upper arm and a gauge that displays the pressure readings. When the cuff inflates, it temporarily stops the blood flow in the artery. As the cuff is deflated, the healthcare provider listens for the sounds of the blood flow (using a stethoscope) and observes the readings on the gauge to determine both systolic (the pressure during heartbeats) and diastolic (the pressure between heartbeats) blood pressure levels.

Understanding blood pressure is crucial for assessing cardiovascular health, diagnosing various health conditions, and monitoring the effectiveness of treatments. Unlike heart rate, body temperature, or breathing rate, which are measured using different instruments, the sphygmomanometer is uniquely designed and calibrated to provide accurate blood pressure readings, making it an essential tool in clinical settings.