Respiratory failure & ventilation

The Association Between Mechanical Power Within the First 24 Hours and ICU Mortality in Mechanically Ventilated Adult Patients With Acute Hypoxemic Respiratory Failure: A Registry-Based Cohort Study

ChestPublished Multicentre cohort study

Main finding · ICU mortalityResult — go to the resultOdds ratio 1.58 95% CI 1.44–1.72

Authors' conclusion

In this study, exposure to high MP within the first 24 hours of IMV was associated with increased ICU mortality in patients with AHRF.

Study context

Population
Adults with acute hypoxemic respiratory failure (AHRF) receiving invasive mechanical ventilation (IMV); excluded if IMV > 24 hours before inclusion or receiving extracorporeal life supportof 21,714 in registry
Participants
9,031 adults
Exposure
High mechanical power (MP) vs lower MP within the first 24 hours of IMV
Outcome
ICU mortality
Methodological detailsinverse probability of treatment weighting, change-point regression with restricted cubic splines
  • Inverse probability of treatment weighting
  • Change-point regression with restricted cubic splines

Main finding

As reported in the abstract

Odds ratio

1.58

95% CI 1.44–1.72

High MP vs Low MP
OR 1.58 (95% CI 1.44–1.72)

Observational data: associations, not effects.

Further findings

High MP associated with lower extubation rates and fewer ventilator-free days

Original publication

The Association Between Mechanical Power Within the First 24 Hours and ICU Mortality in Mechanically Ventilated Adult Patients With Acute Hypoxemic Respiratory Failure: A Registry-Based Cohort Study. Chest. Published 28 March 2025. doi:10.1016/j.chest.2025.03.012

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