Mean arterial pressure | 合法醫療器材資訊網

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Average blood pressure in an individual during a single cardiac cycle

Representation of the arterial pressure waveform over one cardiac cycle. The notch in the curve is associated with closing of the aortic valve.

In medicine, the mean arterial pressure (MAP) is an average calculated blood pressure in an individual during a single cardiac cycle.[1] 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.[2][3] A normal MAP is about 90 mmHg.[4]

MAP is altered by cardiac outp...