What is a sphygmomanometer used for?

• A. To measure body temperature
• B. An instrument for measuring blood pressure
• C. To assess heart rate
• D. A device for examining the lungs

Answer: (B)

A sphygmomanometer is specifically designed to measure blood pressure, which is the force of blood against the walls of the arteries. This instrument typically consists of an inflatable cuff that is wrapped around the upper arm, along with a pressure gauge that indicates the pressure in the cuff. As the cuff inflates, it constricts the blood flow in the artery. The pressure is released slowly, and the point at which blood flow resumes is noted as the systolic pressure, while the point at which the blood flow can no longer be heard is recorded as the diastolic pressure. Accurate blood pressure readings are crucial for diagnosing and managing various health conditions such as hypertension and cardiovascular diseases. This makes the sphygmomanometer an essential tool in both clinical and emergency settings for healthcare providers, including EMTs.