Background:The optimal intraperitoneal pressure during laparoscopy is not known. Recent literature found benefits of using lower pressures, but the safety of doing abdominal surgery with low peritoneal pressures needs to be assessed. This systematic review compares low with standard pneumoperitoneum during gynecologic laparoscopy.Database:We searched Medline, Embase, and the Cochrane Library for randomized controlled trials comparing intraperitoneal pressures during gynecologic laparoscopy. Two authors reviewed references and extracted data from included trials. Risk ratios, mean differences, and standard mean differences were calculated and pooled using RevMan5. Of 2251 studies identified, three were included in the systematic review, for a total of 238 patients. We found a statistically significant but modest diminution in postoperative pain of 0.38 standardized unit based on an original 10-point scale (95% confidence interval [CI], –0.67 to –0.08) during the immediate postoperative period when using low intraperitoneal pressure of 8 mm Hg compared with ≥12 mm Hg and of 0.50 (95% CI, –0.80 to –0.21) 24 hours after the surgery. Lower pressures were associated with worse visualization of the surgical field (risk ratio, 10.31; 95% CI, 1.29–82.38). We found no difference between groups over blood loss, duration of surgery, hospital length of stay, or the need for increased pressure.Conclusion:Low intraperitoneal pressures during gynecologic laparoscopy cannot be recommended on the behalf of this review because improvement in pain scores is minimal and visualization of the surgical field is affected. The safety of this intervention as well as cost-effectiveness considerations need to be further studied.
BackgroundNo 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/designWe 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.DiscussionOur 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 registrationPROSPERO: CRD42015020231Electronic supplementary materialThe online version of this article (doi:10.1186/s13643-015-0091-6) contains supplementary material, which is available to authorized users.
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