Respiratory failure & ventilation

Impact of comorbidities on management and outcomes of patients weaning from invasive mechanical ventilation: insights from the WEAN SAFE study

Crit CarePublished Secondary analysis of the WEAN SAFE study

Authors' conclusion

Most patients weaning from invasive ventilation have comorbidities, which are associated with higher weaning failure risk and worse outcomes.

Study context

Population
Patients enrolled in the WEAN SAFE study who commenced weaning from invasive mechanical ventilation
Participants
4,523 patients
Comparison
Number of comorbidities and specific comorbidity type
  • Nonen = 1,562reference
  • 1n = 1,614
  • 2n = 889
  • 3 plusn = 432
Primary endpoint
Impact of comorbidities on delayed weaning and failed weaning from invasive MV

Primary result

As reported in the abstract

Delayed and failed weaning from invasive MV
  • Proportion with failed weaning increased progressively with increasing comorbidities
  • Patients with comorbidities more likely to fail a separation attempt, receive an extubation attempt, and require >1 extubation attempt
  • Neuromuscular comorbidities associated with increased weaning duration
  • Weaning failure increased with respiratory, hepatic, renal, neuromuscular, and immune dysfunction comorbidities

Secondary outcomes

Hospital mortality

Hospital mortality

Hospital mortality increased progressively with number of comorbidities
Each specific comorbidity independently associated with increased hospital mortality

Decisions to limit life-sustaining interventions

Presence of comorbidities associated with decisions to limit life-sustaining interventions

Original publication

Impact of comorbidities on management and outcomes of patients weaning from invasive mechanical ventilation: insights from the WEAN SAFE study. Crit Care. Published 13 March 2025. doi:10.1186/s13054-025-05341-7

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