Which instrument is used to measure blood pressure?

• A. Sphygmomanometer
• B. Thermometer
• C. Pulse oximeter
• D. Glucose meter

Answer: (A)

The sphygmomanometer is the instrument specifically designed for measuring blood pressure. It typically consists of a cuff that is wrapped around the patient's arm and a manometer to display the pressure reading. When the cuff is inflated, it temporarily stops blood flow in the artery. As the cuff is deflated, the healthcare professional listens with a stethoscope for the sound of the blood flow returning, which indicates the systolic and diastolic pressures. This method is a critical and essential skill for healthcare providers, as monitoring blood pressure is vital in assessing cardiovascular health and diagnosing various conditions.

The other instruments mentioned serve different functions: a thermometer measures body temperature; a pulse oximeter assesses blood oxygen saturation levels; and a glucose meter measures blood sugar levels. Each of these tools is significant in clinical settings, but they do not measure blood pressure. Understanding the specific purpose of each instrument is crucial for effective patient care and monitoring.