In a blood pressure measurement, the lower number represents which type of pressure?

The lower number in a blood pressure measurement represents diastolic pressure. This value indicates the pressure in the arteries when the heart is resting between beats, allowing the chambers to fill with blood. It is an essential measurement as it reflects the minimum pressure exerted on arterial walls. Diastolic pressure is a critical part of understanding overall cardiovascular health as it shows how well the heart and arteries are functioning during periods of rest.

This differentiation is crucial in assessing blood pressure, as the systolic (the higher number) indicates the pressure during heartbeats when the heart contracts and pumps blood. Understanding diastolic pressure helps in evaluating conditions such as hypertension and overall heart health.