Surgical Apgar Score (SAS)
10-point intraoperative risk score predicting postoperative major complications and death. Based on estimated blood loss, lowest mean arterial pressure, and lowest heart rate during surgery. Score 0–10; lower score = higher risk. Applicable across surgical specialties.
Score interpretation
SAS 9–10 — <5% rate of major postoperative complications
→ Routine post-operative monitoring; standard ward care appropriate; ERAS (Enhanced Recovery After Surgery) pathway if applicable; standard analgesia; reassess if clinical deterioration
SAS 7–8 — approximately 5–10% major complication rate
→ Ward-based post-operative monitoring; ensure adequate fluid resuscitation; observe for complications (haemorrhage, infection, AKI, respiratory); escalate if NEWS2 rising; standard enhanced recovery pathway; GP follow-up arranged
SAS 5–6 — approximately 10–20% major complication rate
→ Level 1 or HDU monitoring recommended postoperatively; fluid balance charting; regular NEWS2 assessments; early senior review if deteriorating; ensure IV access maintained; thromboprophylaxis; nutritional support; surgical review at 24 and 48 hours
SAS 0–4 — up to 75% major complication or 30-day mortality risk
→ ICU or level 2 (HDU) admission mandatory; invasive monitoring; optimise haemodynamics (MAP >65, fluid balance); ventilatory support if indicated; vasopressors if haemodynamically compromised; aggressive treatment of complications; senior surgical, anaesthetic, and critical care review; family update and expectations management
Interpretation bands for the Surgical Apgar Score. Apply clinical judgement and local guidance.
References
- Gawande AA et al. An Apgar score for surgery. J Am Coll Surg. 2007;204(2):201–208.
Related
Curated clinical cross-links plus same-class fallbacks.
- Rapid Sequence Induction (RSI) · DAS 2015 / AAGBI
- ICU Sedation and Analgesia · SCCM / NICE CG83
- Vasopressor Escalation in Shock · Surviving Sepsis Campaign 2021
- Tracheostomy Management · NTSP / ICS guidelines
- Major Trauma — Primary Survey (ATLS) · ATLS 10th Edition; JRCALC; NICE NG39
- Major Haemorrhage / Massive Transfusion · BCSH; RCOA; RCEM; RCS — BCSH Guidelines
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.