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August 01, 2022

Home Mean arterial pressure (MAP)

Mean arterial pressure (MAP)


 Mean arterial pressure (MAP)

 A common method used to estimate the MAP is the following formula:

* MAP = DP + 1/3(SP – DP) or

* MAP = DP + 1/3(PP)

Where DP is the diastolic blood pressure, SP is the systolic blood pressure, and PP is the pulse pressure.

To perfuse vital organs requires the maintenance of a minimum MAP of 60 mmHg. If MAP drops below this point for an extended period, end-organ manifestations such as ischemia and infarction can occur. If the MAP drops significantly, blood will not be able to perfuse cerebral tissues, there will be a loss of consciousness, and neuronal death will quickly ensue.

Satyendra Dhar MD, 

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