Mean Arterial Pressure Calculator

Assess Organ Perfusion Pressure

Calculate Mean Arterial Pressure (MAP) to assess the average pressure in arteries during one cardiac cycle and evaluate tissue perfusion adequacy.

Blood Pressure Readings

Systolic Blood Pressure (SBP)*

mmHg

The top number in a blood pressure reading (normal: 90-120 mmHg)

Diastolic Blood Pressure (DBP)*

mmHg

The bottom number in a blood pressure reading (normal: 60-80 mmHg)

How to Measure Blood Pressure

• Sit quietly for 5 minutes before measuring
• Keep arm at heart level
• Use properly sized cuff
• Take multiple readings and average them

Important Note

This calculator is for educational purposes only. MAP values should be interpreted by qualified healthcare professionals.

About Mean Arterial Pressure

Mean Arterial Pressure (MAP) represents the average pressure in the arteries during one cardiac cycle. It is a better indicator of tissue perfusion than systolic or diastolic pressure alone.

A MAP of at least 60 mmHg is generally considered necessary to maintain adequate tissue perfusion to vital organs. In critically ill patients, a MAP target of 65-70 mmHg is often recommended.

Clinical Uses:

Assessing organ perfusion adequacy
Guiding fluid resuscitation in shock
Monitoring critically ill patients
Evaluating cardiovascular function

Calculation Formula

Standard Formula:

MAP = DBP + ⅓(SBP - DBP)

MAP = (SBP + 2 × DBP) / 3

Pulse Pressure:

PP = SBP - DBP

The formula weights diastolic pressure more heavily because the heart spends more time in diastole than systole.

Clinical Significance of MAP Values

MAP Range	Interpretation	Clinical Action
< 60 mmHg	Hypotension - Risk of organ hypoperfusion	Urgent intervention needed
60-70 mmHg	Borderline - Close monitoring required	Monitor closely, consider intervention
70-100 mmHg	Normal - Adequate perfusion	Routine monitoring
100-110 mmHg	Elevated - Mild hypertension	Lifestyle modifications, monitor
> 110 mmHg	Hypertension - Cardiovascular risk	Medical evaluation and treatment