Preoperative ERCP Approach to Common Bile Duct Stones:Results of a Selective Policy

Background: In a previous study, we made a plea for more selective indications for preoperative ERCP in patients with gallstones based on the results obtained from a liberal policy. Following 3.5 years of implementing this selective policy, a report on the results are presented here. This study was performed in a referral academic hospital. Methods: Between June 1994 and December 1997, 328 patients underwent cholecystectomy because of symptomatic cholelithiasis. Absolute indications for preoperative ERCP were: acute cholangitis (4 patients); obstructive jaundice (22 patients); gallstone pancreatitis (within the first 24 h in 14 patients), and wide common bile duct (CBD, >8 mm) with suspicion of stones in the biliary tree (2 patients). Results: In 42 patients (12.8%) a preoperative ERCP was performed for these indications. Stones were found in the CBD in 30 patients and edema in the papilla in 2 patients (total 76.2%). The stones could be extracted by endoscopic sphincterotomy in 24 of the 30 patients (80%). Complications were seen in 7 patients (16.7%). All these complications (bleeding of the papilla in 4 and mild pancreatitis in 3 patients) could be treated conservatively. During a mean follow-up of 2.5 years, CBD stones could be demonstrated postoperatively in 3 patients (0.3%). No mortality was observed in this series. Conclusions: The results of this selective policy included the expected outcome of a significant reduction in the number of ERCPs performed from 29 to 12.8% (p < 0.001, χ2 test) and a better yield of stones, from 29 to 76.2% of the patients. The mortality of the procedure decreased from 2 to 0% whereas morbidity remained the same. This selective policy seems adequate for the preoperative assessment of CBD stones.

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