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Adoption of Lower Tidal Volume Ventilation Improves With Feedback and Education

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OBJECTIVE: To determine whether feedback and education improve adoption of lung-protective mechanical ventilation (ie, with lower tidal volume [VT]). METHODS: We conducted a retrospective study of ventilator settings; we used data from 3 consecutive studies of patients with acute lung injury and/or acute respiratory distress syndrome, in the intensive care units of 2 university hospitals in the Netherlands. At site 1 we conducted a time series study of before and after education and feedback about lung-protective mechanical ventilation, and we compared the results from site 1 to the ventilation strategies used at site 2, which did not undergo the education and feedback intervention. Feedback and education consisted of presentations of actual ventilator settings, advised ventilator settings, and discussions on potential reasons for not using lower VT. RESULTS: Two studies were performed at site 1, in 1999–2000 (Study 1, n = 22) and in 2002 (Study 2, n = 12). In 2003–2004, Study 3 was performed simultaneously at site 1 (n = 8) and site 2 (n = 17). At site 1, the mean ± SD VT was 10.9 mL/kg predicted body weight (PBW) (95% CI 10.3–11.6) in Study 1 and 9.9 mL/kg PBW (95% CI 9.0–10.8) in Study 2 (difference not significant). After the feedback and education intervention at site 1, VT declined to 7.6 mL/kg PBW (95% CI 6.5–8.7) in Study 3 (p = 0.003). At site 2, where no feedback or education were given, VT was 10.3 mL/kg PBW (95% CI 9.5–11.0) in Study 3 (p < 0.001 vs Site 1). CONCLUSIONS: Adoption of a lower-VT ventilation strategy in patients with acute lung injury or acute respiratory distress syndrome is far from complete in the Netherlands. Adoption of a lower-VT strategy improves after feedback and education.


Document Type: Research Article

Affiliations: 1: Department of Anesthesiology and Intensive Care Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands 2: Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht, the Netherlands 3: Department of Intensive Care Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands 4: Department of Clinical Epidemiology and Biostatistics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands

Publication date: December 1, 2007

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