💉 ASA Physical Status Classification
UseUse before surgery to assign a physical-status class and append 'E' for emergencies, supporting anesthetic ri…
SourceASA Physical Status Classification System.
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
ASA class correlates with perioperative risk but is not the sole determinant — surgery type, anesthesia, and urgency also matter (original synthesis · not guideline verbatim).
When to use
Use before surgery to assign a physical-status class and append 'E' for emergencies, supporting anesthetic risk discussion.
How it works
ASA I healthy; II mild systemic disease; III severe but not incapacitating; IV severe, constant threat to life; V moribund; VI brain-dead donor; add 'E' for emergency procedures.
Key points
- ASA class correlates with perioperative risk but is not the sole determinant — surgery type, anesthesia, and urgency also matter (original synthesis · not guideline verbatim).
- Assignment carries inter-rater subjectivity, especially for class II vs III.
- The 'E' modifier captures the added risk of emergency surgery independent of the underlying class.
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.
| Physical status | III: Severe systemic disease, functionally limiting but not decompensated |
|---|---|
| Emergency surgery (add E) | Yes |
→ClassASA IIIE
- Note：Elevated risk, needs optimization and assessment
| Physical status | I: Healthy, no systemic disease |
|---|---|
| Emergency surgery (add E) | Yes |
→ClassASA IE
- Note：Relatively low perioperative risk
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using ASA Physical Status Classification?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does ASA Physical Status Classification 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 ASA Physical Status Classification calculated in practice? Can you show a worked example?
- Inputs: Physical status III: Severe systemic disease, functionally limiting but not decompensated, Emergency surgery (add E) Yes → Result: Class ASA IIIE（Note: Elevated risk, needs optimization and assessment） Inputs: Physical status I: Healthy, no systemic disease, Emergency surgery (add E) Yes → Result: Class ASA IE（Note: Relatively low perioperative risk）