Respiratory failure & ventilation

Noninvasive ventilation in postoperative critically ill patients with morbid obesity: secondary analysis of the EXTUBOBESE multicentre randomised clinical trial

Br J AnaesthPublished Secondary analysis of the EXTUBOBESE randomised trial

Primary resultResult — go to the resultAbsolute risk difference −10.5 95% CI −16.8 to −4.3

Authors' conclusion

Among postoperative critically ill adults with obesity undergoing tracheal extubation, our results suggest that use of noninvasive ventilation is effective to reduce treatment failure in comparison with oxygen therapy alone. These effects were more pronounced in patients with morbid obesity.

Study context

Population
Postoperative critically ill patients with obesity (BMI ≥30 kg m-2) and morbid obesity (BMI ≥40 kg m-2) undergoing tracheal extubation
Participants
585 patients
Comparison
Prophylactic noninvasive ventilation (NIV) vs oxygen therapy after extubation
  • NIVn = 292
  • Oxygen therapyn = 293reference
Primary endpoint
Treatment failure: composite of reintubation, switch to the other study treatment, or premature study treatment discontinuation
Follow-up
Within 3 days after extubation
Methodological detailsmulticentre
  • Multicentre

Primary result

As reported in the abstract

Absolute risk difference

−10.5

95% CI −16.8 to −4.3

Events by treatment group

NIV vs Oxygen therapy
absolute risk difference −10.5 (95% CI −16.8 to −4.3)

Secondary outcomes

Reintubation · within 3 days

P = 0.58

OutcomeP value
Time without reintubation by level of obesity (subgroup)BMI ≥40 kg m-2P = 0.02
Time without reintubation by level of obesity (subgroup)30≤BMI<40 kg m-2P = 0.70
  • Time without reintubation by level of obesity (subgroup): interaction P=0.045 for level of obesity

Treatment failure, HFNO and standard oxygen analysed separately

Similar results when analysing HFNO separately from standard oxygen

Original publication

Noninvasive ventilation in postoperative critically ill patients with morbid obesity: secondary analysis of the EXTUBOBESE multicentre randomised clinical trial. Br J Anaesth. Published 3 October 2025. doi:10.1016/j.bja.2025.09.002

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