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Predictive factors for conversion of laparoscopic cholecystectomy.
Michael Rosen1, Fred Brody, Jeffrey Ponsky
1Department of General Surgery and Minimally Invasive Surgery Center, Cleveland Clinic Foundation, 9500 Euclid Ave., A-80, Cleveland, OH 44195, USA.
American Journal of Surgery
|October 2, 2002
Summary
Identifying patients at risk for conversion from laparoscopic to open cholecystectomy is crucial. Key predictors include elevated white blood cell count, gallbladder wall thickness, and body mass index, varying by patient condition.
Area of Science:
- Minimally Invasive Surgery
- Surgical Outcomes Research
- Gastrointestinal Surgery
Background:
- Laparoscopic cholecystectomy is standard for gallbladder disease.
- Conversion to open surgery is sometimes necessary.
- Predicting conversion risk is challenging.
Purpose of the Study:
- Identify risk factors for laparoscopic cholecystectomy conversion.
- Develop predictive models for conversion to open procedures.
Main Methods:
- Retrospective analysis of 1,347 laparoscopic cholecystectomies.
- Evaluated 34 parameters: demographics, clinical history, labs, imaging, intraoperative data.
- Used multivariate logistic regression to identify predictors.
Main Results:
- 5.3% of cases converted to open surgery.
- Overall predictors: WBC >9 (OR 2.9) and gallbladder wall thickness >0.4 cm (OR 7.2).
- Acute cholecystitis: BMI >30 (OR 5.6). Elective: BMI >40 (OR 33.1) and wall thickness >0.4 cm (OR 24.7). Nonelective: ASA >2 (OR 5.3).
Conclusions:
- Obesity and acute cholecystitis increase conversion risk.
- Comorbidities and nonelective surgery increase conversion likelihood.
- Morbid obesity with chronic cholecystitis and thickened gallbladder wall predict conversion in elective cases.