The effect of class 3 obesity on the functionality of supraglottic airway devices: a historical cohort analysis with propensity score matching
Authors' conclusion
Patients with class 3 obesity (BMI ≥ 40 kg·m-2) had greater than three-fold odds of nonfunctional intraoperative SGAs than patients without class 3 obesity.
Study context
- Population
- Adults undergoing surgery under GA with an SGA inserted, a hospital in Queensland, Australia, November 2017 to September 2020
- Participants
- 321 vs 471
- Exposure
- Class 3 obesity vs without class 3 obesity
- Class 3 obesityn = 321
- Controln = 471reference
- Outcome
- Nonfunctional SGA
Methodological detailspropensity score matching, inverse probability of treatment weighting, Data collected from electronic medical records
- Propensity score matching
- Inverse probability of treatment weighting
- Data collected from electronic medical records
Main finding
As reported in the abstract
Each group vs controlEstimate (95% CI)
Class 3 obesity
OR 2.3(1.0–5.1)
Class 3 obesity
aOR 3.9(1.4–10.6)
- Overall weighted prevalence of nonfunctional SGAs
- 3.2%
Observational data: associations, not effects.
Original publication
The effect of class 3 obesity on the functionality of supraglottic airway devices: a historical cohort analysis with propensity score matching. Can J Anaesth. Published 13 October 2023. doi:10.
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