A blood pressure cuff is used to measure blood pressure. It contains an air bladder which fills up with air and compresses the brachial artery to stop the flow of blood. When the air from the bladder is released, the blood flow restarts. The physician records the systolic and diastolic BP by listening to the flow of blood through a stethoscope1. The cuff is inflated tightly over the wrist or arm, blocking blood flow through the artery