🔪 Surgical Apgar Score (SAS)
Predict major postoperative complications with the Surgical Apgar Score.
Clinical takeaway
Derived from intraoperative data at the end of surgery.
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When to use
Flag patients for higher-acuity postoperative monitoring.
How it works
Estimated blood loss (0–3), lowest MAP (0–3) and lowest heart rate (0–4), summed 0–10. ≤ 4 high risk.
Key points
- Derived from intraoperative data at the end of surgery.
- Low scores predict 30-day morbidity and mortality.
- Simple, objective and broadly applicable.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
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.
| Estimated blood loss | > 1000 mL (0) |
|---|---|
| Lowest mean arterial pressure | < 40 mmHg (0) |
| Lowest heart rate | > 85 (0) |
→Surgical Apgar0/10
- Risk：High risk of major complication/death
- Note：≤ 4 is associated with markedly higher 30-day morbidity/mortality — consider closer postoperative monitoring.
| Estimated blood loss | ≤ 100 mL (3) |
|---|---|
| Lowest mean arterial pressure | ≥ 70 (3) |
| Lowest heart rate | ≤ 55 (4) |
→Surgical Apgar10/10
- Risk：Lower risk
- Note：≤ 4 is associated with markedly higher 30-day morbidity/mortality — consider closer postoperative monitoring.
Frequently asked questions
- What is Surgical Apgar Score (SAS)?
- Predict major postoperative complications with the Surgical Apgar Score.
- How is Surgical Apgar Score (SAS) calculated? What is the core formula?
- Estimated blood loss (0–3), lowest MAP (0–3) and lowest heart rate (0–4), summed 0–10. ≤ 4 high risk.
- When is Surgical Apgar Score (SAS) used?
- Flag patients for higher-acuity postoperative monitoring.
- What are the key clinical points for Surgical Apgar Score (SAS)?
- Derived from intraoperative data at the end of surgery. Low scores predict 30-day morbidity and mortality. Simple, objective and broadly applicable.
- What are the limits and cautions when using Surgical Apgar Score (SAS)?
- 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.
- How is Surgical Apgar Score (SAS) calculated in practice? Can you show a worked example?
- Inputs: Estimated blood loss > 1000 mL (0), Lowest mean arterial pressure < 40 mmHg (0), Lowest heart rate > 85 (0) → Result: Surgical Apgar 0 /10（Risk: High risk of major complication/death, Note: ≤ 4 is associated with markedly higher 30-day morbidity/mortality — consider closer postoperative monitoring.） Inputs: Estimated blood loss ≤ 100 mL (3), Lowest mean arterial pressure ≥ 70 (3), Lowest heart rate ≤ 55 (4) → Result: Surgical Apgar 10 /10（Risk: Lower risk, Note: ≤ 4 is associated with markedly higher 30-day morbidity/mortality — consider closer postoperative monitoring.）