Gastroenterology & Hepatology Clinical Calculators

Why This Matters

Gastrointestinal and liver diseases account for significant global morbidity and mortality. Liver cirrhosis is the 11th leading cause of death worldwide, responsible for over 1.3 million deaths annually. Upper GI bleeding has an incidence of 50-150 per 100,000 adults annually, with mortality rates of 5-15% despite advances in endoscopic and pharmacological therapy. Non-alcoholic fatty liver disease (NAFLD) affects 25% of the global population, with fibrosis being the strongest predictor of liver-related outcomes. Validated scoring systems like Child-Pugh (developed in 1973, still widely used for cirrhosis prognosis), MELD-Na (the current UNOS standard for liver transplant allocation), Rockall and Glasgow-Blatchford scores (for GI bleeding risk stratification), and FIB-4 (a simple non-invasive fibrosis marker) are essential clinical tools that guide treatment decisions, assess prognosis, and optimize resource utilization.

When to Use

Use Child-Pugh Score for cirrhosis severity classification (Class A/B/C) and prognostic assessment. Use MELD-Na for liver transplant prioritization — it is the current UNOS standard. Use Rockall Score for risk stratification of upper GI bleeding in patients who have undergone endoscopy. Use Glasgow-Blatchford Score for pre-endoscopy assessment of upper GI bleeding to determine which patients need urgent endoscopic intervention. Use FIB-4 Score for non-invasive liver fibrosis staging in patients with NAFLD, hepatitis B, or hepatitis C.

Available Gastroenterology Calculators

• Rockall Score

  The Rockall score (also known as the admission Rockall score or full Rockall score) is a validated clinical scoring system used to predict mortality risk in patients presenting with upper gastrointestinal bleeding. It combines clinical parameters (age, shock, comorbidity) with endoscopic findings (diagnosis, stigmata of recent hemorrhage) to stratify patients into low, moderate, high, and very high mortality risk categories.

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• MELD-Na Score

  The MELD-Na score incorporates serum sodium into the standard MELD calculation to improve mortality prediction in patients with end-stage liver disease awaiting liver transplantation. Adopted by UNOS in 2016, it is the current standard for liver transplant organ allocation in the United States.

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• Child-Pugh Score

  The Child-Pugh score (also known as the Child-Turcotte-Pugh score) is a widely used clinical tool for assessing the severity of liver cirrhosis and predicting prognosis. It classifies patients into Class A (well-compensated), B (significant functional compromise), or C (decompensated disease) based on five clinical and laboratory parameters.

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• GBS Score

  The Glasgow-Blatchford Score (GBS) is a validated pre-endoscopy risk stratification tool for patients presenting with upper gastrointestinal bleeding. It identifies patients at low risk (<0.5% needing intervention) who may be suitable for outpatient management without urgent endoscopy.

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• FIB-4 Score

  The FIB-4 (Fibrosis-4) score is a validated non-invasive index that combines routine laboratory values (age, AST, ALT, and platelet count) to estimate the probability of advanced liver fibrosis in patients with chronic liver disease.

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• NAFLD Fibrosis Score

  The NAFLD Fibrosis Score (NFS) is a non-invasive scoring system that estimates the probability of advanced liver fibrosis (F3-F4) in patients with non-alcoholic fatty liver disease (NAFLD). It uses age, BMI, diabetes status, AST, ALT, platelet count, and albumin to stratify patients into low, indeterminate, and high risk categories.

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• BISAP Score

  The BISAP (Bedside Index for Severity in Acute Pancreatitis) Score is a simple, validated scoring system for early risk stratification of patients with acute pancreatitis. It assesses five variables within the first 24 hours of presentation to predict mortality risk.

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• APRI Score

  The AST to Platelet Ratio Index (APRI) is a validated non-invasive biomarker for liver fibrosis in chronic liver disease, particularly hepatitis C and NAFLD. Developed by Wai et al. (2003).

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• AIMS65 Score

  The AIMS65 score is a simple risk stratification tool for predicting in-hospital mortality in patients presenting with acute upper gastrointestinal bleeding.

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Clinical Guidelines

• AASLD Practice Guidelines on Cirrhosis and Portal Hypertension (2024)
• EASL Clinical Practice Guidelines on Liver Transplantation (2024)
• BSG Guidelines on Upper Gastrointestinal Bleeding (2023)
• UNOS/OPTN Liver Allocation Policies (2024)

Frequently Asked Questions