Respiratory failure & ventilation
Rethinking ARDS classification: oxygenation impairment fails to predict ventilator-induced lung injury (VILI) risk
Authors' conclusion
ARDS severity based on oxygenation impairment does not reflect the prerequisites and determinants of VILI.
Study context
- Population
- ARDS subjects with PaO2/FiO2 < 200 mmHg
- Participants
- 228 subjects
- Exposure
- ARDS severity by PaO2/FiO2 vs tertiles of VILI predictors
- Outcome
- Relation of VILI risk to oxygenation-based ARDS severity
Main finding
As reported in the abstract
VILI predictors vs oxygenation-based severity
- Mechanical power ratio (MPR) and driving pressure (DP) similar across PaO2/FiO2 severity groups
- Oxygenation comparable across VILI risk levels defined by MPR and DP
Observational data: associations, not effects.
Further findings
CT anatomy
- Oxygenation impairment associated with increased lung weight, recruitability and reduced well-inflated tissue
- MPR and DP tertiles affected baby lung size variables (lung gas volume, well-inflated tissue)
Mechanical ventilation intensity
- Increased progressively across MPR and DP tertiles; similar across PaO2/FiO2 severity groups
Original publication
Rethinking ARDS classification: oxygenation impairment fails to predict VILI risk. Intensive Care Med. Published 11 December 2024. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →