title: Placement of prophylactic pancreatic stents to prevent post-endoscopic retrograde cholangiopancreatography pancreatitis in high-risk patients: a meta-analysis.
abstract: OBJECTIVE
  To assess the effectiveness of pancreatic stents for preventing pancreatitis in high-risk patients after endoscopic retrograde cholangiopancreatography (ERCP).
  
  
  METHODS
  PubMed, Embase, Science Citation Index, and Cochrane Controlled Trials Register were searched to identify relevant trials published in English. Inclusion and exclusion criteria were used to screen for suitable studies. Two reviewers independently judged the study eligibility while screening the citations. The methodological quality of the included trials was assessed using the Jadad scoring system. All results were expressed as OR and 95%CI. Data were analyzed using Stata12.0 software.
  
  
  RESULTS
  Ten eligible randomized controlled trials were selected, including 1176 patients. A fixed-effects model in meta-analysis supported that pancreatic duct stents significantly decreased the incidence of post-ERCP pancreatitis (PEP) in high-risk patients (OR = 0.25; 95%CI: 0.17-0.38; P < 0.001). Pancreatic stents also alleviated the severity of PEP (mild pancreatitis after ERCP: OR = 0.33; 95%CI: 0.21-0.54; P < 0.001; moderate pancreatitis after ERCP: OR = 0.30; 95%CI: 0.13-0.67; P = 0.004). The result of severe pancreatitis after ERCP was handled more rigorously (OR = 0.24; 95%CI: 0.05-1.16; P = 0.077). Serum amylase levels were not different between patients with pancreatic stents and control patients (OR = 1.08; 95%CI: 0.82-1.41; P = 0.586).
  
  
  CONCLUSIONS
  Placement of prophylactic pancreatic stents may lower the incidence of post-ERCP pancreatitis in high-risk patients and alleviate the severity of this condition.
authors.affiliation: Qing-Qing Shi, Guo-Du Tang, Xiao-Ping Lv, Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China.
authors.forename: Qing-Qing
authors.initials: QQ
authors.lastname: Shi
authors.affiliation: Qing-Qing Shi, Guo-Du Tang, Xiao-Ping Lv, Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China.
authors.forename: Xiao-Yi
authors.initials: XY
authors.lastname: Ning
authors.affiliation: Qing-Qing Shi, Guo-Du Tang, Xiao-Ping Lv, Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China.
authors.forename: Ling-Ling
authors.initials: LL
authors.lastname: Zhan
authors.affiliation: Qing-Qing Shi, Guo-Du Tang, Xiao-Ping Lv, Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China.
authors.forename: Guo-Du
authors.initials: GD
authors.lastname: Tang
authors.affiliation: Qing-Qing Shi, Guo-Du Tang, Xiao-Ping Lv, Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China.
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Lv
mesh_terms: D000681:Amylases / Q000097:blood; D015415:Biomarkers / Q000097:blood; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000009:adverse effects* / Q000295:instrumentation*; D006801:Humans; D034321:Hyperamylasemia / Q000097:blood / Q000209:etiology; D016017:Odds Ratio; D010195:Pancreatitis / Q000175:diagnosis / Q000209:etiology / Q000517:prevention & control*; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D015607:Stents; D016896:Treatment Outcome
chemical_list: D015415:Biomarkers; D000681:Amylases
keywords: Endoscopic retrograde cholangiopancreatography; Hyperamylasemia; Meta-analysis; Pancreatic stent; Pancreatitis