Respiratory failure & ventilation

Relationship between D-dimers and dead-space on disease severity and mortality in COVID-19 acute respiratory distress syndrome: A retrospective observational cohort study

J Crit CarePublished Retrospective observational cohort study

Authors' conclusion

We report no association between dead space and inflammatory markers in mechanically ventilated patients with C-ARDS.

Study context

Population
Mechanically ventilated patients with COVID-19 ARDS (C-ARDS), first 24 h of invasive ventilation
Outcome
Relationship between dead space indices, markers of inflammation, immunothrombosis, severity and ICU mortality

Main finding

As reported in the abstract

Correlation of D-dimers with dead space indices

D-dimers vs VR, weak relationship

r = 0.07

p = 0.13

D-dimers vs PETCO2/PaCO2, weak relationship

r = −0.1

p = 0.02

D-dimers vs estimated dead space fraction, weak relationship

r = 0.019

p = 0.68

Observational data: associations, not effects.

Further findings

D-dimers and ferritin across C-ARDS severity categories

Not significantly different across severity categories

Intensive care unit (ICU) mortality

Age, PaO2/FiO2, pH, PETCO2/PaCO2 and ferritin independently associated with ICU mortality

Original publication

Relationship between D-dimers and dead-space on disease severity and mortality in COVID-19 acute respiratory distress syndrome: A retrospective observational cohort study. J Crit Care. Published 26 April 2023. doi:10.1016/j.jcrc.2023.154313

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