Respiratory failure & ventilation

Association Between Baseline Driving Pressure and Mortality in Very Old Patients with Acute Respiratory Distress Syndrome

Am J Respir Crit Care MedPublished Secondary analysis of individual patient-level data from seven acute respiratory distress syndrome (ARDS) Network and PETAL Network randomised controlled trials

Authors' conclusion

Data from randomized controlled trials with strict inclusion criteria suggest that the effect of driving pressure on the mortality of patients with ARDS may depend on age.

Study context

Population
Patients with ARDS across the adult lifespan, including very old (⩾80 yr)ARDSNet cohort
Participants
4,567 patients
Comparison
Association of baseline driving pressure with 90-day mortality across age (age as continuous variable)
Primary endpoint
90-day mortality (interaction between age and baseline driving pressure)
Follow-up
90 days
Methodological detailsindependent national validation cohort (Hellenic cohort), binary logistic and Cox regression with age × driving pressure interaction
  • Independent national validation cohort (Hellenic cohort)
  • Binary logistic and Cox regression with age × driving pressure interaction

Primary result

As reported in the abstract

Interaction between age and driving pressure on mortality
Effect of driving pressure on mortality depended on age (interaction P)
P = 0.01
Difference in driving pressure between survivors and nonsurvivors significantly changed across the adult lifespan
P < 0.01

Further findings

Driving pressure threshold associated with mortality in very old patients, in both cohorts (cm H2O)
11

Original publication

Association Between Baseline Driving Pressure and Mortality in Very Old Patients with Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med. Published 1 December 2024. doi:10.1164/rccm.202401-0049oc

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