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Prevention of ventilator-associated pneumonia with oral antiseptics: a systematic review and meta-analysis



Prevention of ventilator-associated pneumonia with oral antiseptics: a systematic review and meta-analysis

Sonia O Labeau MNSc, Katrien Van de Vyver MNSc, Nele Brusselaers PhD, Prof Dirk Vogelaers PhD, Prof Stijn I Blot PhD

The Lancet Infectious Diseases,
11:11, July 27, 2011

Prevention of ventilator-associated pneumonia with oral antiseptics: a systematic review and meta-analysis

Background
We did a systematic review and random effects meta-analysis of randomised trials to assess the effect of oral care with chlorhexidine or povidone-iodine on the prevalence of ventilator-associated pneumonia versus oral care without these antiseptics in adults.


Methods
Studies were identified through PubMed, CINAHL, Web of Science, CENTRAL, and complementary manual searches. Eligible studies were randomised trials of mechanically ventilated adult patients receiving oral care with chlorhexidine or povidone-iodine. Relative risks (RR) and 95% CIs were calculated with the Mantel-Haenszel model and heterogeneity was assessed with the I2 test.


Findings
14 studies were included (2481 patients), 12 investigating the effect of chlorhexidine (2341 patients) and two of povidone-iodine (140 patients). Overall, antiseptic use resulted in a significant risk reduction of ventilator-associated pneumonia (RR 0.67; 95% CI 0.50—0.88; p=0.004). Chlorhexidine application was shown to be effective (RR 0.72; 95% CI 0.55—0.94; p=0.02), whereas the effect resulting from povidone-iodine remains unclear (RR 0.39; 95% CI 0.11—1.36; p=0.14). Heterogeneity was moderate (I2=29%; p=0.16) for the trials using chlorhexidine and high (I2=67%; p=0.08) for those assessing povidone-iodine use. Favourable effects were more pronounced in subgroup analyses for 2% chlorhexidine (RR 0.53, 95% CI 0.31—0.91), and in cardiosurgical studies (RR 0.41, 95% CI 0.17—0.98).


Interpretation
This analysis showed a beneficial effect of oral antiseptic use in prevention of ventilator-associated pneumonia. Clinicians should take these findings into account when providing oral care to intubated patients.







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Prepared by: Dr. Houssam Al-Nahhas






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