What device is used to measure blood pressure?

The sphygmomanometer is the device specifically designed to measure blood pressure. This instrument typically consists of an inflatable cuff that is placed around the upper arm and a measuring unit. When the cuff is inflated, it compresses the arm's arteries, and as it deflates, the pressure of the blood against the artery walls is measured. This process allows for the determination of both systolic and diastolic blood pressure readings, which are essential for evaluating cardiovascular health.

While the stethoscope is often used in conjunction with the sphygmomanometer to listen for heartbeats and blood flow sounds, it does not measure blood pressure directly. The electrocardiogram (ECG) is utilized to assess the heart's electrical activity, and a cardiac monitor provides ongoing monitoring of various heart functions, but neither is designed for measuring blood pressure. Therefore, the sphygmomanometer is the only appropriate choice for this particular measurement.