• Arch Surg Chicago · Dec 2004

    Meta Analysis

    Mechanical bowel preparation for elective colorectal surgery: a meta-analysis.

    • Pascal Bucher, Bernadette Mermillod, Pascal Gervaz, and Philippe Morel.
    • Clinic of Visceral and Transplantation Surgery, Department of Surgery and Division of Medical Statistics, Geneva University Hospital, Geneva, Switzerland. pascal.bucher@hcuge.ch
    • Arch Surg Chicago. 2004 Dec 1; 139 (12): 1359-64; discussion 1365.

    HypothesisThere is little scientific evidence to support the routine practice of mechanical bowel preparation (MBP) before elective colorectal surgery in order to minimize the risk of postoperative septic complications.Data SourcesTrials were retrieved using a MEDLINE search followed by a manual search of the bibliographic information in select articles. Languages were restricted to English, French, Spanish, Italian, and German. There was no date restriction.Study SelectionOnly prospective randomized clinical trials (RCTs) evaluating MBP vs no MBP before elective colorectal surgery were included.Data ExtractionOutcomes evaluated were anastomotic leakage, intra-abdominal infection, wound infection, reoperation, and general and extra-abdominal morbidity and mortality rates. Data were extracted by 2 independent observers.Data SynthesisSeven RCTs were retrieved. The total number of patients in these RCTs was 1297 (642 who had received MBP and 655 who had not). Among all the RCTs reviewed, anastomotic leak was significantly more frequent in the MBP group, 5.6% (36/642), compared with the no-MBP group, 2.8% (18/655) (odds ratio, 1.84; P = .03). Intra-abdominal infection (3.7% for the MBP group vs 2.0% for the no-MBP group), wound infection (7.5% for the MBP group vs 5.5% for the no-MBP group), and reoperation (5.2% for the MBP group vs 2.2% for the no-MBP group) rates were nonstatistically significantly higher in the MBP group. General morbidity and mortality rates were slightly higher in the MBP group.ConclusionsThere is no evidence to support the use of MBP in patients undergoing elective colorectal surgery. Available data tend to suggest that MBP could be harmful with respect to the incidence of anastomotic leak and does not reduce the incidence of septic complications.

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