Efficacy and safety of three inflation methods of the laryngeal mask airway Ambu® Auraonce™: a randomized controlled study
Authors' conclusion
When a cuff manometer is not available, a partial inflation of AuraOnce™ LMA cuff using MV method allows to control intracuff pressure, with no significant changes of OLP and LV compared to RV and NV insufflation method.
Study context
- Population
- Patients scheduled for EBUS under GA using AuraOnce™ laryngeal mask airway (LMA)201 (95.7%) completed
- Participants
- 210 patients
- Comparison
- Residual volume (RV) vs maximum volume (MV) vs NV
- RVn = 69
- MVn = 65
- NVn = 67
Methodological detailsdouble-blind
- Double-blind
Primary result
As reported in the abstract
Intracuff pressure (IP)
MV
59.4
mean · SD 32.4 · cm H2O
RV
75.1
mean · SD 21.1 · cm H2O
NV
83.1
mean · SD 25.5 · cmH20
P < 0.01
Further findings
Incidence of IP > 60 cmH2O — MV vs RV and NV · lower in the MV group
P < 0.01
| Outcome | P value |
|---|---|
| Insertion success at first attemptMV vs RV and NV · no difference between groups | P = 0.38 |
| Airway leak pressure (OLP)MV vs RV and NV · no difference between groups | P = 0.53 |
| Leakage volume (LV)MV vs RV and NV · no difference between groups | P = 0.26 |
Safety
Postoperative complications (PC)
- No difference between groups (p = 0.16)
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
Efficacy and safety of three inflation methods of the laryngeal mask airway Ambu® Auraonce™: a randomized controlled study. J Clin Monit Comput. Published 4 August 2023. doi:10.
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