![]() Blood pressure is usually expressed in terms of the systolic pressure (maximum pressure during one heartbeat) over diastolic pressure (minimum pressure between two heartbeats) in the cardiac cycle. ![]() When used without qualification, the term "blood pressure" refers to the pressure in a brachial artery, where it is most commonly measured. Most of this pressure results from the heart pumping blood through the circulatory system. A healthcare worker measuring blood pressure using a sphygmomanometer.īlood pressure ( BP) is the pressure of circulating blood against the walls of blood vessels.
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