Laparoscopic cholecystectomy

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Abstract
We reviewed our experience with the last 587 laparoscopic cholecystectomies performed between May 1990 and January 1993 to correlate preoperative findings that may predict the conversion of a laparoscopic cholecystectomy to that of an open procedure. The prediction of a need to convert to an open cholecystectomy would allow the surgeon to discuss the higher risk of conversion with the patient and also allow for an earlier intraoperative decision to convert if difficulty was encountered. In addition to routine demographic data, ultrasound reports were available for 526 patients and the following information was recorded: presence of stones, thickened gallbladder wall, common bile duct dilatation, gallbladder sludge, and cystic duct impaction. Overall, a two times higher rate of conversion was found for male patients and patients with a body mass index >27.2 kg/m2. Additionally, a thickened gallbladder wall on preoperative ultrasound was correlated with a six times higher conversion rate to open cholecystectomy. As expected, the positive intraoperative cholangiogram was associated with a higher incidence of conversion. Additionally, finding a dilated common bile duct on ultrasound was found to be associated with a nearly seven times higher rate of positive intraoperative cholangiogram. No statistical significance was found between conversion and age, previous abdominal operations, the presence of stones, common bile duct dilatation, gallbladder sludge, cystic duct impaction, or a distended gallbladder. Thus, these predictive findings allow the surgeon to preoperatively discuss the higher risk of conversion and allow for an earlier judgment decision to convert if intraoperative difficulty is encountered.

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