🩸 Mean Arterial Pressure (MAP) Calculator
UseBedside estimate of perfusion pressure. An arterial line gives the true MAP.
StrataSSC 2021: initial MAP target of 65 mmHg in adults with septic shock on vasopressors; it is not a target for e…
LimitsCuff estimates are less accurate at extreme HR or irregular rhythms. · MAP alone does not confirm adequate microcirculatory perfusion — inte… · Targets differ in trauma, neurocritical care and pregnancy — follow l…
SourceEvans L, et al. Surviving Sepsis Campaign 2021. Crit Care Med 2021;49(11):e1063-e1143. doi:10.1097/…
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
MAP < 65 mmHg suggests inadequate organ perfusion.
When to use
Bedside estimate of perfusion pressure. An arterial line gives the true MAP.
How it works
MAP ≈ DBP + (SBP − DBP)/3. In adults with septic shock on vasopressors, SSC 2021 recommends an initial MAP target of 65 mmHg.
Key points
- MAP < 65 mmHg suggests inadequate organ perfusion.
- The 1/3 estimate is least accurate at high heart rates.
- Targets are individualised (e.g. higher in chronic hypertension).
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Systolic BP | 120 mmHg |
|---|---|
| Diastolic BP | 80 mmHg |
→MAP93mmHg
- Formula：MAP = DBP + (SBP − DBP)/3
- Septic shock target：Initial target 65 mmHg in adults with septic shock on vasopressors (SSC 2021)
Verification & sources · governance
FAQ
Frequently asked questions
- Does Mean Arterial Pressure (MAP) Calculator upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Mean Arterial Pressure (MAP) Calculator calculated in practice? Can you show a worked example?
- Inputs: Systolic BP 120 mmHg, Diastolic BP 80 mmHg → Result: MAP 93 mmHg（Formula: MAP = DBP + (SBP − DBP)/3, Septic shock target: Initial target 65 mmHg in adults with septic shock on vasopressors (SSC 2021)）