Apnoeic oxygenation in morbid obesity: a randomised controlled trial comparing facemask and high-flow nasal oxygen delivery
Authors' conclusion
In experienced hands, apnoeic oxygenation is possible in morbidly obese patients, and oxygen desaturation did not occur for 18 min in the majority of patients, whether oxygen delivery was high-flow nasal or low-flow facemask.
Study context
- Population
- Morbidly obese patients undergoing bariatric surgery, apnoeic after induction of anaesthesia for 18 min or until SpO2 decreased to 92%
- Participants
- 80 patients
- Comparison
- High-flow nasal vs facemask oxygen for apnoeic oxygenation
- High-Flow Nasal Oxygenn = 41
- Facemaskn = 39reference
- Primary endpoint
- Duration of apnoea
Primary result
As reported in the abstract
Apnoea time
Further findings
Events
| Outcome | High-Flow Nasal Oxygen | Facemask | HR (95% CI) | P value | |
|---|---|---|---|---|---|
| Desaturation to 92% within 18 min | 5 | 14 | 0.27 (0.11–0.65) | P = 0.007 | |
| 0.10.31310Hazard ratio (log scale) |
Original publication
Apnoeic oxygenation in morbid obesity: a randomised controlled trial comparing facemask and high-flow nasal oxygen delivery. Br J Anaesth. Published 11 January 2022. doi:10.
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