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Mean Arterial Pressure (MAP) Calculator

Calculate the average pressure in a patient's arteries during one cardiac cycle. MAP is considered a better indicator of perfusion to vital organs than systolic blood pressure alone.

BPBlood Pressure Values

Enter the Systolic and Diastolic blood pressure.

Result

Mean Arterial Pressure (MAP)

--mmHg
Enter valid blood pressure values

Clinical Significance

  • MAP ≥ 65 mmHg is typically required to maintain adequate tissue perfusion.
  • Used to guide titration of vasopressors in sepsis and shock.
  • Formula: MAP = (SBP + 2 × DBP) / 3
  • Alternatively: MAP = DBP + 1/3(SBP - DBP)
  • Source: Mean Arterial Pressure (StatPearls)

About Mean Arterial Pressure

Mean Arterial Pressure (MAP) describes the average blood pressure in an individual during a single cardiac cycle. It is a critical parameter for monitoring hemodynamics, particularly in shock or sepsis.

Calculation

Since diastole lasts approximately twice as long as systole, the formula for MAP is:

MAP ≈ (SBP + 2 × DBP) / 3

Where SBP is Systolic Blood Pressure and DBP is Diastolic Blood Pressure.

Clinical Interpretation

  • Target MAP: A MAP ≥ 65 mmHg is generally recommended to maintain adequate tissue perfusion in patients with sepsis or septic shock.
  • Low MAP: Values < 60 mmHg may result in hypoperfusion and potential ischemia of vital organs (kidneys, brain, heart).
  • High MAP: Elevated MAP increases cardiac workload and may indicate hypertension.

Disclaimer: This tool is intended for educational and reference purposes only. It should not be used as a substitute for professional medical judgment or advice.