Surgical Apgar Score (intraoperative outcome)
Surgical Apgar Score (0–10) from estimated blood loss and the lowest intraoperative mean arterial pressure and heart rate; ≤ 4 flags high major-complication/death risk.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Estimated blood loss
- 200 mL
- Lowest MAP
- 60 mmHg
- Lowest heart rate
- 80 bpm
Result: Surgical Apgar Score 5 of 10 — intermediate risk.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Risk
- Score ≤ 4 carries a high major-complication/death risk; the gradient runs ≈4% at 9–10 to ≈14–58% at ≤ 4. Distinct from the neonatal Apgar.
What you enter
- Estimated blood loss
- Lowest MAP
- Lowest heart rate
How this is calculated
- Points
- Estimated blood loss (≤100 mL=3, 101–600=2, 601–1000=1, >1000=0) + lowest MAP (≥70=3, 55–69=2, 40–54=1, <40=0) + lowest HR (≤55=4, 56–65=3, 66–75=2, 76–85=1, >85=0).
Gawande AA, Kwaan MR, Regenbogen SE, Lipsitz SA, Zinner MJ. An Apgar score for surgery. J Am Coll Surg. 2007;204(2):201-208. Validation: Regenbogen SE, et al. Arch Surg. 2009;144(1):30-36. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.