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Head elevation and laryngeal mask airway Supreme insertion: A randomized controlled trial

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Abstract
Background: A laryngeal mask airway (LMA) is usually inserted by conventional 7?cm head elevation. However, little is known about the association of head elevation degree and LMA insertion. We hypothesized that 14?cm head elevation would increase the first attempt success rate of LMA Supreme insertion compared with conventional 7?cm head elevation in patients undergoing transurethral resection of bladder tumour. Methods: Patients were randomly allocated to the high group (n?=?55, 14?cm head elevation) or the control group (n?=?55, conventional 7?cm head elevation). The primary outcome was the first attempt success rate of LMA Supreme insertion. Results: The first attempt success rate was significantly higher in the high group than in the control group (53 [96.4%] vs 40 [72.7%], P?=.001, relative risk?=?1.30, 95% confidence interval [CI]?=?1.12-1.57, absolute risk reduction?=?23.7%). Fibreoptic bronchoscope grade 4 (ie optimal position of the LMA) was significantly higher in the high group (35 [64.8%] vs 18 [36.7%], P?=.004, relative risk?=?1.76, 95% CI?=?1.16-2.68, absolute risk reduction?=?30.9%). Conclusions: Head elevation of 14?cm height increased the first attempt success rate of LMA Supreme insertion and fibreoptic bronchoscopic grade in patients undergoing transurethral resection of bladder tumour. High head elevation can be an effective option for successful LMA Supreme insertion. Trial Registry Number: Clinicaltrials.gov (NCT04229862).
Author(s)
박준영유지현홍준혁황재현김영국
Issued Date
2021
Type
Article
Keyword
Bronchoscopyfibreoptic bronchoscopic gradehead elevationlaryngeal mask airwaytransurethral resection of bladder tumour
DOI
10.1111/aas.13742
URI
https://oak.ulsan.ac.kr/handle/2021.oak/7259
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_proquest_miscellaneous_2459623824&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Head%20elevation%20and%20laryngeal%20mask%20airway%20Supreme%20insertion:%20A%20randomized%20controlled%20trial&offset=0&pcAvailability=true
Publisher
ACTA ANAESTHESIOLOGICA SCANDINAVICA
Location
영국
Language
영어
ISSN
0001-5172
Citation Volume
65
Citation Number
3
Citation Start Page
343
Citation End Page
350
Appears in Collections:
Medicine > Medicine
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