What is a sphygmomanometer used for?

A sphygmomanometer is specifically designed for measuring blood pressure. It consists of an inflatable cuff that is placed around the arm and connected to a pressure gauge. When the cuff is inflated, it compresses the artery, and as the pressure is gradually released, the healthcare provider listens for specific sounds through a stethoscope to determine systolic and diastolic blood pressure readings. This instrument is essential in diagnosing and monitoring conditions like hypertension and is commonly used in medical settings.

The other options represent different physiological measurements that require distinct instruments. A thermometer is used for measuring body temperature, a heart rate monitor measures the number of heartbeats per minute, and a pulse oximeter is used to assess oxygen saturation levels in the blood. Each of these tools serves a different purpose and measures different vital signs, which are not related to blood pressure measurement.