Pre-endoscopic prognostic factors in non-varicose upper gastrointestinal bleeding. Development of a predictive...

Area of Science:

• Gastroenterology
• Internal Medicine
• Clinical Prediction Models

Background:

• Upper gastrointestinal bleeding (UDB) is a frequent cause of hospitalization with significant morbidity and mortality.
• Non-varicose UDB requires effective tools for predicting patient outcomes.
• Early risk stratification is crucial for appropriate clinical management.

Purpose of the Study:

• To identify clinical and laboratory factors predicting a serious course of non-varicose UDB.
• To develop a simple algorithm for clinical application in assessing UDB severity.
• To enable early classification of patients with non-varicose UDB.

Main Methods:

• A longitudinal study of 803 hospitalized patients with non-varicose UDB.
• Clinical and laboratory data collected in the Emergency Service prior to endoscopy.
• Logistic regression models developed and simplified for clinical utility, with prognostic performance assessed via ROC curves.

Main Results:

• An initial model with 11 variables showed an AUC of 0.74.
• A simplified dichotomized model also achieved an AUC of 0.74.
• Major factors (shock, liver disease, anticoagulants, high urea/creatinine ratio) or two minor factors (low hematocrit, renal failure, hematemesis/melena, low blood pressure, alcohol use, UDB history, age > 75) predict an unfavorable UDB course.

Conclusions:

• The developed algorithm effectively utilizes pre-endoscopy data.
• It allows for early classification of patients with non-varicose UDB.
• This aids in predicting the clinical course and guiding management decisions.