• H Macaigne, V G Ruggieri, L Vallet-Tadeusz Equipe opérationnelle d'hygiène, CHU Reims, Reims, France., V Vernet-Garnier, L S Aho-Glélé, O Bajolet, and A Lefebvre.
• Equipe opérationnelle d'hygiène, CHU Reims, Reims, France.
• J. Hosp. Infect. 2019 Jul 1; 102 (3): 245-255.

AbstractSystematic cultures of drain tips or drainage fluids for the early detection of surgical site infections (SSIs) are controversial. To examine the association between the results of systematic drain tip or drainage fluid cultures and the occurrence of SSIs in clean or clean-contaminated surgery. Searches were performed in the PubMed, and Cat.inist databases for observational studies published before 31st March 2017. Studies reporting results of drain tip or drainage fluid systematic cultures and SSIs after clean or clean-contaminated surgeries were included, and meta-analyses were performed. Seventeen studies, including 4390 patients for drain tip cultures and 1288 for drainage fluid cultures, were selected. The pooled negative predictive values were high (99%, 95% confidence interval (CI) 98-100 for drain tip cultures and 98%, 95% CI 94-100 for drainage fluid cultures). The positive predictive values were low (11%, 95% CI 2-24 for drain tip cultures and 12%, 95% CI 3-24 for drainage fluid cultures). The sensitivities were low (41%, 95% CI 12-73 for drain tip cultures and 37%, 95% CI 16-60 for drainage fluid cultures). The specificities were high (93%, 95% CI 88-96) for drain tip cultures and moderate (77%, 95% CI 54-94) for drainage fluid cultures. Systematic cultures of drain tips or drainage fluids appear not to be relevant, because their positive predictive values were low in the prediction of SSIs.Copyright © 2018 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.

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