What is sphygmamanometer primarily used to measure?

The sphygmomanometer is primarily used to measure arterial blood pressure, which is a critical indicator of cardiovascular health. This instrument works by inflating a cuff around the upper arm to temporarily restrict blood flow, then gradually releasing the pressure while a healthcare provider listens for specific sounds using a stethoscope or visually observes a gauge. The readings provide two key values: systolic pressure, which occurs when the heart beats, and diastolic pressure, which occurs when the heart is at rest between beats.

Understanding the role of a sphygmomanometer is vital in medical practice as it helps in diagnosing conditions such as hypertension and monitoring the effectiveness of treatments. This measurement is a fundamental aspect of routine health assessments, making it essential for both healthcare providers and patients.

In contrast, the other options—measuring glucose levels, heart rate, or oxygen saturation—require different types of devices and are associated with different physiological parameters, highlighting the specific and essential function of the sphygmomanometer in evaluating blood pressure.