Mean arterial pressure
Average blood pressure in an individual during a single cardiac cycle
Mean arterial pressure
Mean arterial pressure (MAP) is an average calculated blood pressure in an individual during a single cardiac cycle. Although methods of estimating MAP vary, a common calculation is to take one-third of the pulse pressure (the difference between the systolic and diastolic pressures), and add that amount to the diastolic pressure. A normal MAP for adults is about 90 mmHg. MAP is altered by cardiac output and systemic vascular resistance. It is used to estimate the risk of cardiovascular diseases, where a MAP of 90 mmHg or less is low risk, and a MAP of greater than 96 mmHg represents "stage one hypertension" with increased risk.
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