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Gastrointestinal complications after cardiac surgery - improved risk stratification using a new scoring model
Bodil Andersson1, Roland Andersson, Johan Brandt
1Department of Surgery, Lund University and Lund University Hospital, Lund, Sweden.
Insights
A new risk score, the gastrointestinal complication score (GICS), effectively predicts serious gastrointestinal complications after cardiac surgery. This validated tool aids in stratifying patient risk for better surgical outcomes.
Area of Science:
- Cardiology
- Gastroenterology
- Surgical Outcomes
Background:
- Gastrointestinal (GI) complications are significant adverse events following cardiac surgery.
- Predictive models for these complications are crucial for patient management and improving surgical outcomes.
Purpose of the Study:
- To develop and validate a novel risk score model for predicting GI complications after cardiac surgery.
- To assess the predictive accuracy and calibration of the developed risk score.
Main Methods:
- Development of the gastrointestinal complication score (GICS) using prospectively collected data from 5593 patients (1996-2001).
- Validation of the GICS model on an independent cohort of 1031 cardiac surgery patients (2005-2006).
- Evaluation of predictive ability using receiver operating characteristic (ROC) curves and the Hosmer-Lemeshow test.
Main Results:
- The GICS model demonstrated good predictive ability in both developmental (ROC area 0.81) and validation (ROC area 0.83) datasets.
- The incidence of GI complications was 0.8% in both developmental and validation cohorts.
- The model showed good calibration, with estimated probabilities of GI complications correlating with GICS values (e.g., GICS >or=15 associated with >20% risk).
Conclusions:
- The gastrointestinal complication score (GICS) is a validated tool with good predictive performance for GI complications post-cardiac surgery.
- GICS enables effective risk stratification, aiding clinicians in identifying high-risk patients.
- Implementation of GICS can potentially improve patient outcomes by allowing for targeted interventions.
Abstract:
Gastrointestinal (GI) complications are serious consequences of cardiac surgery. The aim of this study was to develop, evaluate and validate a new risk score model for GI complications after cardiac surgery. The risk score model, named gastrointestinal complication score (GICS), was developed using prospectively collected data from 5593 patients who underwent 5636 cardiac surgical procedures between 1996 and 2001. The model was validated on 1031 cardiac surgery patients between 2005 and 2006. The scoring system's ability to predict GI complications was estimated by receiver operating characteristic (ROC)-curves and Hosmer-Lemeshow test. Fifty GI complications were identified in 47 patients (0.8%) in the developmental data set and eight (0.8%) in the validation data set. The ROC area in the developmental data set was 0.81 with a good calibration estimated by Hosmer-Lemeshow test (P=0.89). In the validation data set, the area under the curve was 0.83. The estimated probability for the patient to develop a GI complication after cardiac surgery at a GICS >or=15 is >20% and at a GICS