Journal
WORLD JOURNAL OF GASTROENTEROLOGY
Volume 20, Issue 38, Pages 14033-14039Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.v20.i38.14033
Keywords
Biliary stent; Endoscopic sphincterotomy; Endoscopic retrograde cholangiopancreatography; Malignant biliary obstruction
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AIM: To investigate the benefits of endoscopic sphincterotomy (EST) before stent placement by meta-analysis of randomized controlled trials (RCTs). METHODS: PubMed, EMBASE, Cochrane Library, and Science Citation Index databases up to March 2014 were searched. The primary outcome was incidence of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) and successful stent insertion rate. The secondary outcomes were the incidence of post-ERCP bleeding, stent migration and occlusion. The free software Review Manager was used to perform the meta-analysis. RESULTS: Three studies (n = 338 patients, 170 in the EST group and 168 in the non-EST group) were included. All three studies described a comparison of baseline patient characteristics and showed that there were no statistically significant differences between the two groups. Three RCTs, including 338 patients, were included in this meta-analysis. Most of the analyzed outcomes were similar between the groups. Although EST reduced the incidence of PEP, it also led to a higher incidence of post-ERCP bleeding (OR = 0.34, 95%CI: 0.12-0.93, P = 0.04; OR = 9.70, 95%CI: 1.21-77.75, P = 0.03, respectively). CONCLUSION: EST before stent placement may be useful in reducing the incidence of PEP. However, EST-related complications, such as bleeding and perforation, may offset this effect. (C) 2014 Baishideng Publishing Group Inc. All rights reserved.
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