What is the common measurement unit for blood pressure?

The common measurement unit for blood pressure is milliliters of mercury. This unit stems from the historical use of mercury manometers in clinical practice to measure blood pressure. Blood pressure readings indicate how much pressure is exerted by circulating blood against the walls of blood vessels, and the measurement is expressed in terms of millimeters of mercury (mmHg).

This unit is widely recognized and used in clinical settings, reflecting the height of a column of mercury that the pressure can support. Blood pressure is typically recorded with two values: systolic pressure over diastolic pressure, both measured in mmHg. This standardized measurement ensures consistency and reliability in monitoring an individual’s blood pressure.

Other options presented do not pertain to blood pressure measurement; for example, grams per cubic meter pertains to density, milliliters of oxygen is a volume measurement related to oxygen levels, and kilopascals are a unit of pressure but are not used specifically for measuring blood pressure in clinical practice.