Mean arterial pressure quick answer
Mean arterial pressure (MAP) estimates the average arterial pressure during one cardiac cycle. The common bedside estimate is:
Where:
MAP=
Mean arterial pressureSBP=
Systolic blood pressureDBP=
Diastolic blood pressureHow to calculate MAP
- Subtract diastolic blood pressure from systolic blood pressure to get pulse pressure.
- Divide pulse pressure by 3.
- Add that value to diastolic blood pressure.
Example for 120/80:
MAP = 80 + (120 - 80) / 3 = 93.3 mmHg
Clinical context
MAP is often used as a perfusion marker in emergency medicine, anesthesia, and critical care. In shock states, many protocols use an initial target near 65 mmHg, but individual targets must be set by a clinician based on the patient and setting.
This calculator is educational and is not a substitute for clinical judgment or continuous blood pressure monitoring.