• BJOG · Jun 2014

    Meta Analysis

    Effects of gum chewing on postoperative bowel motility after caesarean section: a meta-analysis of randomised controlled trials.

    • Y-P Zhu, W-J Wang, S-L Zhang, B Dai, and D-W Ye.
    • Department of Urology, Fudan University Shanghai Cancer Centre, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
    • BJOG. 2014 Jun 1;121(7):787-92.

    BackgroundGum chewing has been reported to enhance bowel motility and reduce postoperative ileus (POI). However, the efficacy remains imprecise for women following caesarean section.ObjectivesTo summarise and evaluate the current evidence for postoperative gum chewing on the recovery of bowel function following caesarean section.Search StrategyWe searched studies from the following electronic databases: PubMed, EMBASE, SCOPUS and Cochrane Library from inception to 30 May 2013.Selection CriteriaWe included randomised controlled trials (RCTs) of women after caesarean section; these RCTs should compared gum chewing with no gum chewing and reported on at least one of the outcomes: time to flatus, time to bowel sound, time to passing stool and length of hospital stay (LOS).Data Collection And AnalysisStudy outcomes were presented as mean differences (for continuous data) with 95% confidence interval (95% CI). The risk of bias in the study results was assessed using the assessment tool from the Cochrane Handbook.Main ResultsSix RCTs including 939 women were included in our meta-analysis. The pooled results demonstrated that gum chewing is superior to no gum chewing with a reduction of 6.42 hours (95% CI -7.55 to -5.29) for time to first flatus, 3.62 hours (95% CI -6.41 to -0.83) for time to first bowel sound, 6.58 hours (95% CI -10.10 to -3.07) for time to first stool and 5.94 hours (95% CI -9.39 to -2.49) for LOS. In addition, no evidence emerged for any side effects caused by gum chewing.ConclusionsThe current evidence suggests that gum chewing is associated with early recovery of bowel motility and shorter LOS for women after caesarean section. This safe and inexpensive intervention should be included in routine postoperative care following a caesarean section.© 2014 Royal College of Obstetricians and Gynaecologists.

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