Respiratory failure & ventilation

Dead-Space Ventilation Indices and Mortality in Acute Respiratory Distress Syndrome: A Systematic Review and Meta-Analysis*

Crit Care MedPublished Systematic review and meta-analysis

Authors' conclusion

Dead-space ventilation indices were independently associated with mortality in adults with ARDS.

Study context

Population
Adults with acute respiratory distress syndrome (ARDS) reporting a dead-space ventilation index and mortality28 studies
Comparison
High vs low dead-space ventilation indices
Outcome
Mortality
Methodological detailsrandom effects model, QUIPS risk of bias, GRADE
  • Random effects model
  • QUIPS risk of bias
  • GRADE

Pooled result

As reported in the abstract

Odds ratio (95% CI)P value
High pulmonary dead-space fractionI2 = 84%
3.52(2.22–5.58)
P < 0.001
Every 0.05 increase in pulmonary dead-space fractionadjusted; I2 = 57%
1.23(1.13–1.34)
P < 0.001
High ventilatory ratioI2 = 48%
1.55(1.33–1.80)
P < 0.001
High ventilatory ratioadjusted; I2 = 66%
1.33(1.12–1.58)
P = 0.001

Every 0.05 increase in pulmonary dead-space fraction, as printed

Original publication

Dead-Space Ventilation Indices and Mortality in Acute Respiratory Distress Syndrome: A Systematic Review and Meta-Analysis*. Crit Care Med. Published 19 May 2023. doi:10.1097/ccm.0000000000005921

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