What question did this study set out to answer?

The study aims to develop and validate a prediction model to assess the risk of postoperative bleeding after bariatric surgery.

January 10, 2026Obesity Surgery0 citationsOpen Access

Development and Internal Validation of a Multivariable Prediction Model for Postoperative Bleeding in Patients Undergoing Bariatric Surgery (The POD 1-DISCHARGE Calculator)

KBKsawery BieniaszewskiGdańsk Medical University MSMichał SzymańskiGdańsk Medical University MWMaciej WilczyńskiGdańsk Medical University

Key Result

The POD 1-DISCHARGE model enables early risk stratification for postoperative bleeding in bariatric surgery using POD 1 clinical data, promoting safer discharge practices.

Key Points

The study aims to develop and validate a prediction model to assess the risk of postoperative bleeding after bariatric surgery.
Developed a multivariable prediction model
Utilized POD 1 clinical and laboratory data for risk assessment
Conducted validation in multiple centers
Focused on enhancing discharge practices for bariatric surgery patients
The POD 1-DISCHARGE model is inexpensive and accurate
Supports early risk stratification of bleeding
Demonstrates applicability across diverse centers
Promotes safer discharge practices within ERABS

Structured PICO

Can a multivariable prediction model using postoperative day 1 clinical and laboratory data accurately predict 30-day postoperative bleeding in patients undergoing bariatric surgery?

Population

1,925 patients undergoing laparoscopic sleeve gastrectomy or gastric bypass (Roux-en-Y or one-anastomosis) between January 2017 and December 2023 at a single high-volume bariatric center.

Intervention

POD 1-DISCHARGE multivariable prediction model (incorporating procedure type, excessive postoperative day 1 drainage, and perioperative changes in hemoglobin, platelets, and white blood cells)

Outcome

Postoperative bleeding within 30 days, defined as any surgical or endoscopic intervention for suspected bleeding or transfusion requirementsafety

The POD 1-DISCHARGE model provides a pragmatic and accurate tool for early risk stratification of bleeding after bariatric surgery, potentially supporting safer discharge practices within enhanced recovery pathways.

Main Result

Absolute Event Rate: 0% vs 0%

Abstract

The POD 1-DISCHARGE model offers a pragmatic. inexpensive. and accurate method for early risk stratification of bleeding after bariatric surgery. Its reliance on POD 1 clinical and laboratory data makes it readily applicable across diverse centers. supporting safer discharge practices within ERABS. Prospective multicenter validation will determine its broader applicability.

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