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
• Prehospital SepsisMAP target · 65 mmHg
• Vasopressors and InotropesMAP still low: add epinephrine.

Related calculators

• Cardiac Index (CI)
• Cardiac Output (Fick Principle)
• Cerebral Perfusion Pressure (CPP)
• Oxygen Delivery (DO₂)
• Pulmonary Vascular Resistance (PVR)
• QTc (Bazett)
• Shock Index
• Stroke Volume (SV)

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