MAP calculator online: mean arterial pressure formula and shock targets
Mean arterial pressure from systolic and diastolic: MAP = (SBP + 2 × DBP)/3. Tissue perfusion marker used in anesthesia, critical care, sepsis, and shock for hemodynamic management.
About this calculator
Mean arterial pressure (MAP) represents the average tissue perfusion pressure across the cardiac cycle, weighted by systolic (1/3) and diastolic (2/3) duration. Formula: MAP = (SBP + 2 × DBP)/3 or DBP + (SBP – DBP)/3, in mmHg. Used in anesthesia, critical care, cardiology, and neurology for hemodynamic management. Targets: septic shock ≥65 mmHg (Surviving Sepsis Campaign 2021); ischemic stroke 65–80; severe TBI 110–130 for adequate cerebral perfusion; cardiogenic shock ≥65; perioperative ≥65 to prevent renal and cardiac dysfunction. MAP <60 mmHg correlates with tissue hypoperfusion and increased risk of acute kidney injury, myocardial infarction, and perioperative mortality. The calculator does not account for individual factors – patients with long-standing hypertension may need higher targets for adequate perfusion.
Source
Magder S. The meaning of blood pressure. Crit Care. 2018;22(1):257.
Formula version: 2024-v1
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