LAUSR

BACKGROUND Postoperative pancreatic fistula (POPF) remains the main cause of surgery related mortality after pancreaticoduodenectomy. Various pancreatoenteric anastomosis methods have been developed to reduce the POPF rate. However, the optimum choice has not been clarified. METHODS A literature search is performed in electronic databases, including PubMed, Medline, Embase, CNKI and the Cochrane Library. Studies comparing modified Blumgart anastomosis with interrupted transpancreatic suture are included in this meta-analysis. Grade B/C POPF, overall POPF rate and overall sever complication rate (Clavien-Dindo classification IIIa or more) are measured as primary outcomes. Revman 5.3 was used to perform the analysis. RESULTS Five retrospective comparative studies and 1 randomized controlled trial with a total number of 1409 patients are included in our analysis. Meta-analysis revealed that modified Blumgart anastomosis is associated with lower rate of grade B/C POPF [Odds Ratio (OR) 95% confidence interval (CI),0.32 (0.12-0.84); P = 0.02] and intra-abdominal abscess [OR 95%CI, 0.43 (0.29-0.65); P < 0.01] comparing with interrupted transpancreatic suture. However, this procedure could not reduce overall POPF [OR 95%CI,0.70 (0.34-1.44); P = 0.34] and overall sever complication rate [OR 95%CI,0.91 (0.48-1.72); P = 0.77]. CONCLUSION At current level of evidence, modified Blumgart anastomosis is superior to interrupted transpancreatic suture in terms of grade B/C POPF and intra-abdominal abscess. However, high-grade evidence will be necessary to confirm these results.