Mean arterial pressure (MAP) = diastolic blood pressure + 1/3 × (systolic blood pressure − diastolic blood pressure)
MAP = (systolic blood pressure + 2 × diastolic blood pressure) ÷ 3
Example: 120/80 mmHg
Pulse pressure = 120 − 80 = 40
MAP = 80 + 1/3 × 40 = 93.3 mmHg
MAP = (120 + 2 × 80) ÷ 3 = 93.3 mmHg