A systematic review with meta‐analysis on prophylactic negative pressure wound therapy versus standard dressing for obese women after caesarean section

AIMS: The purpose of this study is to assess the efficacy of prophylactic negative pressure wound therapy (NPWT) in obese women undergoing caesarean section. DESIGN: An updated review and meta‐analysis of randomized controlled trials following Preferred Reporting Items for Systematic Reviews and Meta‐Analyses guidelines. METHODS: PubMed, Embase, Medline, Web of Science, and Cochrane Library were searched from inception up to March 2022 without restriction in language. We chose surgical site infection as the primary outcome. RESULTS: NPWT resulted in a lower surgical site infection rate compared with conventional dressing (risk ratio [RR] = 0.76). The infection rate after low transverse incision was lower comparing the NPWT group with the control group ([RR] = 0.76). No statistically significant difference was detected in blistering([RR] = 2.91). The trial sequential analysis did not support the 20% relative decrease in surgical site infection in the NPWT group. (type II error of 20%).