Mean Arterial Pressure (MAP) Calculator

MAP is the average blood pressure throughout one cardiac cycle. It represents the driving pressure for blood flow to organs. MAP is weighted toward diastolic pressure because the heart spends about 2/3 of the cycle in diastole: MAP = DBP + 1/3(SBP - DBP).

MAP is a better indicator of tissue perfusion than systolic or diastolic pressure alone. A MAP of at least 60-65 mmHg is considered necessary for adequate perfusion of vital organs (brain, kidneys, heart). In critical care, MAP is the primary hemodynamic target.

Cerebral perfusion pressure (CPP) is the net pressure gradient that drives blood flow to the brain. It equals MAP minus intracranial pressure (ICP). In traumatic brain injury, maintaining CPP between 60-70 mmHg is a key treatment goal.