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.
Updated · Methodology
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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