Blood pressure cuff

A BP (blood pressure) machine cuff is a crucial component of a sphygmomanometer, the device used to measure blood pressure. The cuff is wrapped around the upper arm (or sometimes the wrist or thigh) and inflated to temporarily stop blood flow in the artery. Then, as the cuff deflates, the machine detects changes in pressure to determine systolic (highest pressure) and diastolic (lowest pressure) blood pressure readings.