Complications of low compared to standard pneumoperitoneum pressures in laparoscopic surgery for benign gynecologic pathology: a systematic review protocol

BACKGROUND No definite consensus has been established about the optimal pressure for artificial pneumoperitoneum when performing laparoscopic surgery. It has been postulated that lowering intra-peritoneal pressure levels while performing general laparoscopic surgery would lower surgical complications including post-operative pain, but data remain scarce about significant operative complications. Furthermore, such data is not available for gynecologic laparoscopy. The objective of this systematic review is to compare the frequency and nature of significant operative complications of lower and standard pneumoperiteoneal pressure levels in gynecologic laparoscopic surgery for benign indications. METHODS/DESIGN We will search PubMed, Embase, the Cochrane Library, randomised control trials registries, and reference lists of included articles. Randomised controlled trials comparing different intra-peritoneal pressure levels in women undergoing gynecologic laparoscopic surgery for a non-malignant indication will be eligible. Two reviewers will independently select and review references, extract data, and assess quality from included studies. We will use RevMan5 to calculate risk ratios and their 95 % confidence intervals to compare the frequency of complications according to intra-peritoneal pressure levels. We will perform sensitivity analyses to explore heterogeneity potentially due to various operative characteristics or characteristics of patients. DISCUSSION Our results will help identify the optimal intra-peritoneal pressure level in gynecologic laparoscopic surgery and determine if lowering intra-peritoneal pressure levels while trying to achieve lower levels of post-operative pain is an acceptable change of practice according to the frequency and nature of significant complications. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42015020231.