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Acute Pancreatitis Prediction Model

GastroenterologyDiagnosisEmergency careBeta toolThis tool is in beta. It has undergone internal validation but still requires additional testing. Always confirm the data entered and the results obtained before clinical use. It should not be used as the sole basis for clinical decisions.
Select the number of prior episodes.
History of cholelithiasisExplicit yes/no response.
Abdominal surgery within the prior 2 monthsCount only abdominal surgery in the prior 2 months.
Epigastric painPresence of epigastric pain at presentation.
Pain worsening in severityMark yes only when the pain was worsening at presentation.
Use the published duration category.
Use only the published category.
Use only when serum lipase is >=3x ULN.

Clinical noticeEducational diagnostic-support tool only. It does not replace standard diagnostic criteria, clinical judgment, or individualized imaging decisions.

Context and use

APPM = prior episodes (0-4) + cholelithiasis (2) - recent abdominal surgery (2) + epigastric pain (2) + worsening pain (1) + pain duration >=5 days (-1) + pain severity (mild 0, moderate 2, severe 3) + lipase category (0-2).

Operational bands: <=2 low risk, 3-5 medium risk, 6-7 high risk, and >=8 very high risk. The >=6 cutoff had the best overall accuracy in prospective validation.

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Certifications and Compliance

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