Respiratory failure & ventilation
Expiratory flow limitation during mechanical ventilation: real-time detection and physiological subtypes
Authors' conclusion
The Rex method shows an excellent agreement with the PEEP reduction manoeuvre and allows real-time detection of EFLT. Two subtypes of EFLT are identified by Rex analysis.
Study context
- Population
- Medical patients ≥ 15 years receiving mechanical ventilationinitially enrolled
- Participants
- 339 patients
- Comparison
- Rex method vs PEEP reduction manoeuvre
- Outcome
- Agreement of EFLT detection by Rex analysis and PEEP reduction manoeuvre
Methodological detailsprospective, external validation dataset
- Prospective
- External validation dataset
Performance
As reported in the abstract
Agreement of EFLT detection by Rex analysis vs PEEP reduction manoeuvre
Prevalence of expiratory flow limitation (EFLT) (PEEP reduction manoeuvre)
16.5%
Prevalence of EFLT (Rex method)
20%
Agreement of Rex method with PEEP reduction manoeuvre
90.3%
Agreement of Rex method in the validation dataset
91.4%
Further findings
- Agreement of Rex method in validation dataset
- 91.4%
Adjusted hospital mortality, EFLT vs non-EFLT
- Higher adjusted hospital mortality in EFLT patients than non-EFLT
Rex patterns
- Three patterns: no EFLT; early EFLT, associated with airway disease; late EFLT, associated with non-airway diseases incl. obesity
- In early EFLT, external PEEP less likely to eliminate EFLT
Original publication
Expiratory flow limitation during mechanical ventilation: real-time detection and physiological subtypes. Crit Care. Published 21 May 2024. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →