Hemodynamics

Mean Arterial Pressure (MAP) Calculator

Average pressure driving blood through the organs, worked from systolic and diastolic; the usual perfusion target in shock.

Reviewed by Alex G, BSN, RN, CEN, CCRN, CMC, NREMT-P · From the Reference tab of the app

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Formula

MAP = (SBP + 2 × DBP) / 3

Reference: Normal 70–105

How it is used

• Patients with a MAP that is under or above set goal values should be treated with fluids, blood products, vasopressors, inotropes, or vasodilators depending on the clinical scenario.

Key points

• A MAP ≥60 mmHg is believed to be needed to maintain adequate tissue perfusion.
• A MAP ≥65 mmHg is the recommended initial target in adults with septic shock who need vasopressors.

Same formula as the app. Open it in the web app.

Related one-pagers

• Hemodynamic NormalsMAP · 70–105 · mmHg
• Shock Types at a GlanceMAP (mm Hg) · 58 · 62 · 56 · 60 · 60
• ICU Nutrition and RefeedingMAP <50, pressors starting or rising · Hold EN (ASPEN/SCCM 2016)
• Sepsis and Septic Shock BundleMAP goal 65 mm Hg; age 65 or older: 60 to 65 (new in 2026)

Related calculators

• Cardiac Index (CI)
• Cardiac Output (Fick Principle)
• Cardiac Output (HR × SV)
• Cerebral Perfusion Pressure (CPP)
• Coronary Perfusion Pressure
• Ejection Fraction (EF)
• Oxygen Delivery (DO₂)
• Pulmonary Vascular Resistance (PVR)

For education and exam preparation only. Follow your institution’s protocols. For education and exam preparation only. Verify results independently and follow your institution’s protocols. Not a substitute for clinical judgment.