Respiratory failure & ventilation

Effect of immediate initiation of invasive ventilation on mortality in acute hypoxemic respiratory failure: a target trial emulation

Crit CarePublished Target trial emulation using a retrospective cohort database

Main findingResult — go to the resultHazard ratio 0.81 95% CI 0.68–0.96

Authors' conclusion

The initiation of mechanical ventilation in patients with acute hypoxemic respiratory failure reduced the hazard of dying in this emulation of a target trial.

Study context

Population
Non-intubated patients with hypoxemic respiratory failure (SpO2/FiO2 ≤ 200 and SpO2 ≤ 97%) within the first 48-h of hypoxemia, without immediate reason for intubation792 intubated within 48 h
Participants
2,996 patients
Exposure
Immediate initiation of invasive ventilation vs waiting
Outcome
One-year mortality
Follow-up
1 year
Methodological detailssingle-center database (MIMIC-IV), stabilized inverse probability weights, weighted Cox models
  • Single-center database (MIMIC-IV)
  • Stabilized inverse probability weights
  • Weighted Cox models

Main finding

As reported in the abstract

Hazard ratio

0.81

95% CI 0.68–0.96

P = 0.018

Intubation vs Waiting
HR 0.81 (95% CI 0.68–0.96); P = 0.018

Observational data: associations, not effects.

Secondary outcomes

OutcomeHR (95% CI)P value
30-day mortality0.80 (0.64–0.99)P = 0.046

Original publication

Effect of immediate initiation of invasive ventilation on mortality in acute hypoxemic respiratory failure: a target trial emulation. Crit Care. Published 10 May 2024. doi:10.1186/s13054-024-04926-y

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