Hui-Zi Li1, Lei Zhang2, Jia-Xi Chen1, Yang Zheng1, Xiang-Nan Zhu3. 1. Department of General Surgery, The Fourth Affiliated Hospital of NanChang University, Nanchang, Jiangxi, China. 2. Department of Biliary-Pancreatic Surgery, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics, Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China. 3. Department of General Surgery, The Fourth Affiliated Hospital of NanChang University, Nanchang, Jiangxi, China. Electronic address: maomiwang182@163.com.
Abstract
BACKGROUND: Silver-containing dressings for the prevention of surgical site infections (SSIs) remained controversial, and accumulating evidence was lacking, so a meta-analysis was conducted to systematically assess the effectiveness and safety of silver-containing dressings for clean and clean-contaminated surgical incisions. METHODS: Pubmed, Embase, and the Cochrane Library were searched from the inception to February 2016 for randomized controlled trials (RCTs), which explored silver-containing dressings for the prevention of SSIs in clean and clean-contaminated operations. Relative risk (RR) with 95% confidence interval (CI) was pooled using random effects model. Predefined subgroup analyses, sensitivity analyses, and influence analyses were further undertaken. RESULTS: Nine RCTs totaling 2196 patients (1141 in silver-containing group and 1055 in control group) were included. Silver-containing dressings did not effectively prevent the incidence of SSIs (9 RCTs; RR: 0.92; 95% CI: 0.66-1.29; I2 = 40%), superficial SSIs (5 RCTs; RR: 0.67; 95% CI: 0.36-1.24; I2 = 36%), and deep SSIs (5 RCTs; RR: 0.78; 95% CI: 0.41-1.49; I2 = 0). Subgroup analyses, sensitivity analyses, and influence analyses confirmed the robustness of the pooled estimate. CONCLUSIONS: The current available evidence indicated that silver-containing dressing as compared with silver-free dressing was not associated with lower incidence of SSIs. Considering the quality of evidence ranking very low, further studies with higher quality should be warranted.
BACKGROUND:Silver-containing dressings for the prevention of surgical site infections (SSIs) remained controversial, and accumulating evidence was lacking, so a meta-analysis was conducted to systematically assess the effectiveness and safety of silver-containing dressings for clean and clean-contaminated surgical incisions. METHODS: Pubmed, Embase, and the Cochrane Library were searched from the inception to February 2016 for randomized controlled trials (RCTs), which explored silver-containing dressings for the prevention of SSIs in clean and clean-contaminated operations. Relative risk (RR) with 95% confidence interval (CI) was pooled using random effects model. Predefined subgroup analyses, sensitivity analyses, and influence analyses were further undertaken. RESULTS: Nine RCTs totaling 2196 patients (1141 in silver-containing group and 1055 in control group) were included. Silver-containing dressings did not effectively prevent the incidence of SSIs (9 RCTs; RR: 0.92; 95% CI: 0.66-1.29; I2 = 40%), superficial SSIs (5 RCTs; RR: 0.67; 95% CI: 0.36-1.24; I2 = 36%), and deep SSIs (5 RCTs; RR: 0.78; 95% CI: 0.41-1.49; I2 = 0). Subgroup analyses, sensitivity analyses, and influence analyses confirmed the robustness of the pooled estimate. CONCLUSIONS: The current available evidence indicated that silver-containing dressing as compared with silver-free dressing was not associated with lower incidence of SSIs. Considering the quality of evidence ranking very low, further studies with higher quality should be warranted.
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