Restricted accessResearch articleFirst published online 2017-05
Systematic Review and Meta-Analysis of Randomized Controlled Trials Evaluating Prophylactic Intra-Operative Wound Irrigation for the Prevention of Surgical Site Infections
Surgical site infections (SSIs) are one of the most common hospital-acquired infections. To reduce SSIs, prophylactic intra-operative wound irrigation (pIOWI) has been advocated, although the results to date are equivocal. To develop recommendations for the new World Health Organization (WHO) SSI prevention guidelines, a systematic literature review and a meta-analysis were conducted on the effectiveness of pIOWI using different agents as a means of reducing SSI.
Methods:
The PUBMED, Embase, CENTRAL, CINAHL, and WHO databases were searched. Randomized controlled trials (RCTs) comparing either pIOWI with no pIOWI or with pIOWI using different solutions and techniques were retrieved with SSI as the primary outcome. Meta-analyses were performed, and odds ratios (OR) and the mean difference with 95% confidence intervals (CI) were extracted and pooled with a random effects model.
Results:
Twenty-one studies were suitable for analysis, and a distinction was made between intra-peritoneal, mediastinal, and incisional wound irrigation. A low quality of evidence demonstrated a statistically significant benefit for incisional wound irrigation with an aqueous povidone–iodine (PVP-I) solution in clean and clean contaminated wounds (OR 0.31; 95% CI 0.13–0.73; p = 0.007); 50 fewer SSIs per 1,000 procedures (from 19 fewer to 64 fewer)). Antibiotic irrigation had no significant effect in reducing SSIs (OR 1.16; 95% CI 0.64–2.12; p = 0.63).
Conclusion:
Low-quality evidence suggests considering the use of prophylactic incisional wound irrigation to prevent SSI with an aqueous povidone–iodine solution. Antibiotic irrigation does not show a benefit and therefore is discouraged.
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