Respiratory failure & ventilation

Impact of extended lung protection during mechanical ventilation on lung recovery in patients with COVID-19 Acute Respiratory Distress Syndrome (ARDS): a phase II randomized controlled trial

Ann Intensive CarePublished Randomised controlled trial

  • stopped early

Authors' conclusion

The implementation of an individualized PEEP strategy alongside extended lung protection appears viable.

Study context

Population
Moderate/severe COVID-19 ARDS with low respiratory system compliance (CRS < 0.6 (mL/Kg)/cmH2O)ITT analysis
Participants
76 participants
Comparison
EIT-guided extended lung protection vs ARDSNet low-PEEP strategy
  • Interventionn = 37
Primary endpoint
Modified lung injury score (mLIS: daily CRS, oxygen requirements, oxygenation, X-rays), hierarchically adjusted for survival and extubation
Follow-up
Up to day 28
Methodological detailsphase II, single-centre, Ended prematurely after three consecutive months without enrolment (pandemic subsiding)
  • Phase II
  • Single-centre
  • Ended prematurely after three consecutive months without enrolment (pandemic subsiding)

Primary result

As reported in the abstract

Average mLIS up to 28 days · up to 28 days
  • Intervention vs Control: P = 0.95
  • Intention-to-treat
  • Study ended prematurely

Secondary outcomes

Time to reach 63% of maximum mLIS improvement · faster improvement, driven by oxygenation

P < 0.001

OutcomeP value
X-ray improvementSustained improvement in InterventionP = 0.001
CRS · up to day 28Sustained increase in InterventionP = 0.009
Time from randomisation to room-air breathingShorter in InterventionP = 0.02

Survival at 28 days and time to liberation from ventilator

Not different between groups

Original publication

Impact of extended lung protection during mechanical ventilation on lung recovery in patients with COVID-19 ARDS: a phase II randomized controlled trial. Ann Intensive Care. Published 8 June 2024. doi:10.1186/s13613-024-01297-z

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