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Published on: July 14, 2023
Head elevation and laryngeal mask airway Supreme insertion: A randomized controlled trial
Jun-Young Park1, Jihion Yu1, Jun Hyuk Hong2
1Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
Elevating the head by 14 cm significantly improved the first-attempt success rate for Laryngeal Mask Airway (LMA) Supreme insertion. This higher head elevation also led to better LMA positioning during transurethral bladder tumor resection.
Area of Science:
- Anesthesiology
- Airway Management
- Surgical Procedures
Background:
- Conventional Laryngeal Mask Airway (LMA) insertion uses 7 cm head elevation.
- The impact of varying head elevation degrees on LMA insertion success is not well-established.
Purpose of the Study:
- To investigate if 14 cm head elevation improves LMA Supreme insertion success compared to 7 cm.
- To evaluate the effect of head elevation on LMA positioning during transurethral resection of bladder tumor.
Main Methods:
- Randomized controlled trial comparing 14 cm (high group, n=55) vs 7 cm (control group, n=55) head elevation.
- Primary outcome: first attempt success rate of LMA Supreme insertion.
Main Results:
- Significantly higher first attempt success rate in the high elevation group (96.4%) vs control (72.7%).
- Improved LMA positioning (Fibreoptic bronchoscope grade 4) observed in the high elevation group (64.8%) vs control (36.7%).
Conclusions:
- 14 cm head elevation enhances first attempt success and optimal positioning of LMA Supreme.
- Higher head elevation is a viable strategy for successful LMA Supreme insertion in patients undergoing transurethral resection of bladder tumor.
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