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Oakland Score

Risk Stratification for Safe Discharge in Acute Lower GI Bleeding
Evidence-based scoring tool to identify patients with acute lower GI bleeding suitable for early discharge and outpatient colonoscopy. Derived and validated in UK multicentre studies with over 3,000 patients.
Gastroenterology GI Bleeding LGIB Emergency Risk Score
Clinical Parameters at Presentation
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Enter values above

Score Components

VariableOptionsPoints
Age<40 / 40–69 / ≥700 / 1 / 2
SexMale / Female0 / −1
Previous LGIBNo / Yes0 / 1
DRE FindingNo blood / Blood0 / 1
Heart Rate<70 / 70–89 / 90–109 / ≥110 bpm0 / 1 / 2 / 3
Systolic BP≥160 / 130–159 / 100–129 / <100 mmHg0 / 1 / 2 / 3
Haemoglobin≥12 / 10–11.9 / 8–9.9 / <8 g/dL0 / 1 / 2 / 3

Minimum score: −1 (young female, no risk factors, haemodynamically stable, normal Hb). Maximum score: 14.

Interpretation

ScoreRiskRecommendation
≤ 8 Low — Safe Discharge Safe discharge with outpatient colonoscopy within 2 weeks. Safety-net advice given.
9–14 Higher Risk — Admission Admit for monitoring. Inpatient colonoscopy after bowel preparation. IV access and group & save.
≥ 15 High Risk — Urgent Assessment Urgent assessment. Haemodynamic resuscitation. Consider urgent endoscopy, CT angiography or IR.

Clinical Application

  • Derived from 3,012 emergency LGIB patients across 5 UK hospitals.
  • Validated in a separate cohort of over 8,000 patients.
  • Threshold of ≤8 achieves 95% specificity for safe discharge without rebleeding or death at 28 days.
  • Integration with endoscopy: colonoscopy within 24 hours for admitted patients vs. within 2 weeks as outpatient for low-risk patients.
  • Digital rectal examination (DRE) must be performed — it is a required input for accurate scoring and should not be omitted.
  • AUC 0.84 for the 28-day safe discharge outcome in the validation cohort.

Comparison with NOBLADS Score

The Oakland Score and NOBLADS Score are complementary tools addressing different clinical questions in acute LGIB:

  • Oakland Score predicts safe discharge — the primary outcome is absence of rebleeding, transfusion, or death within 28 days. It answers: can this patient go home safely?
  • NOBLADS Score predicts severity — specifically the likelihood of requiring ≥4 units of blood, endoscopic/angiographic intervention, or experiencing rebleeding. It answers: how severe will this bleed become?
  • Both scores can be used together: Oakland to triage admission vs. discharge; NOBLADS to allocate HDU or ICU care and plan resource requirements for admitted patients.

Limitations

  • Sex variable: the female sex protective effect (−1 point) reflects a lower prior LGIB admission rate and lower severity on presentation in the derivation cohort, not a biological mechanism.
  • Haemoglobin threshold: simplified here as a single threshold; the original publication used sex-specific haemoglobin thresholds in some analyses.
  • UK derivation: the score was derived in UK emergency departments and may require validation in other healthcare systems with different patient demographics or referral patterns.
  • Aetiology-agnostic: the score does not differentiate the underlying cause of LGIB (diverticular disease, angioectasia, IBD, colorectal cancer), which may influence clinical decision-making independently.

References

  1. Oakland K, et al. Derivation and validation of a novel risk score for safe discharge after acute lower gastrointestinal bleeding. Gut. 2017;66(11):1941–1950.
  2. Oakland K, et al. Outpatient management of mild or moderate lower gastrointestinal haemorrhage: a cost-effectiveness analysis. Lancet Gastroenterol Hepatol. 2018;3(12):838–846.