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- W4377093669 abstract "OBJECTIVES: Acute respiratory distress syndrome (ARDS) is associated with high ventilation-perfusion heterogeneity and dead-space ventilation. However, whether the degree of dead-space ventilation is associated with outcomes is uncertain. In this systematic review and meta-analysis, we evaluated the ability of dead-space ventilation measures to predict mortality in patients with ARDS. DATA SOURCES: MEDLINE, CENTRAL, and Google Scholar from inception to November 2022. STUDY SELECTION: Studies including adults with ARDS reporting a dead-space ventilation index and mortality. DATA EXTRACTION: Two reviewers independently identified eligible studies and extracted data. We calculated pooled effect estimates using a random effects model for both adjusted and unadjusted results. The quality and strength of evidence were assessed using the Quality in Prognostic Studies and Grading of Recommendations, Assessment, Development, and Evaluation, respectively. DATA SYNTHESIS: We included 28 studies in our review, 21 of which were included in our meta-analysis. All studies had a low risk of bias. A high pulmonary dead-space fraction was associated with increased mortality (odds ratio [OR], 3.52; 95% CI, 2.22–5.58; p < 0.001; I 2 = 84%). After adjusting for other confounding variables, every 0.05 increase in pulmonary-dead space fraction was associated with an increased odds of death (OR, 1.23; 95% CI, 1.13–1.34; p < 0.001; I 2 = 57%). A high ventilatory ratio was also associated with increased mortality (OR, 1.55; 95% CI, 1.33–1.80; p < 0.001; I 2 = 48%). This association was independent of common confounding variables (OR, 1.33; 95% CI, 1.12–1.58; p = 0.001; I 2 = 66%). CONCLUSIONS: Dead-space ventilation indices were independently associated with mortality in adults with ARDS. These indices could be incorporated into clinical trials and used to identify patients who could benefit from early institution of adjunctive therapies. The cut-offs identified in this study should be prospectively validated." @default.
- W4377093669 created "2023-05-20" @default.
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- W4377093669 date "2023-05-19" @default.
- W4377093669 modified "2023-09-29" @default.
- W4377093669 title "Dead-Space Ventilation Indices and Mortality in Acute Respiratory Distress Syndrome: A Systematic Review and Meta-Analysis" @default.
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- W4377093669 doi "https://doi.org/10.1097/ccm.0000000000005921" @default.
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