Calculators · Gastroenterology & Hepatology · Score

AIMS65 score

Also called AIMS 65

Five admission factors that predict in-hospital mortality in acute upper GI bleeding.

AIMS65

0 / 5

In the derivation cohort (187 US hospitals) mortality was 0.3% with no factors and 31.8% with all five.

Formula and scoring

One point each: Albumin < 3.0 g/dL, INR > 1.5, altered Mental status, Systolic BP ≤ 90 mmHg, age ≥ 65 (paper: older than 65).

Exam and ward pearls

  • Mnemonic is the score itself: A-I-M-S-65.
  • Good for mortality; poor for predicting need for endoscopic therapy.

When not to rely on it

  • Derived from administrative data that did not record rebleeding.

Source

  1. Saltzman JR, Tabak YP, Hyett BH, et al. A simple risk score accurately predicts in-hospital mortality, length of stay, and cost in acute upper GI bleeding. Gastrointest Endosc. 2011;74(6):1215-24. doi:10.1016/j.gie.2011.06.024 · PMID 21907980
  2. Stanley AJ, Laine L, Dalton HR, et al. Comparison of risk scoring systems for patients presenting with upper gastrointestinal bleeding: international multicentre prospective study. BMJ. 2017;356:i6432. doi:10.1136/bmj.i6432 · PMID 28053181

Formula and cut-offs checked against these sources on 8 Nov 2026. Educational tool for clinicians; it does not replace clinical judgement.

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