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Influence of head and neck position on ventilation using the air-Q® SP airway in anaesthetized paralysed patients: a prospective randomized crossover study

Authors
 H. J. Kim  ;  K. Lee  ;  S. Bai  ;  M. H. Kim  ;  E. Oh  ;  Y. C. Yoo 
Citation
 BRITISH JOURNAL OF ANAESTHESIA, Vol.118(3) : 452-457, 2017 
Journal Title
 BRITISH JOURNAL OF ANAESTHESIA 
ISSN
 0007-0912 
Issue Date
2017
Abstract
BACKGROUND: The influence of different head and neck positions on the effectiveness of ventilation with the air-Q® self-pressurizing airway remains unevaluated. This study aimed to evaluate the influence of different head and neck positions on ventilation with the air-Q® SP airway. METHODS: In this prospective, randomized crossover study, we enrolled 51 female patients who were to undergo elective gynaecological or breast surgery under general anaesthesia. An air-Q® SP airway was placed in all patients, and mechanical ventilation was performed using a volume-controlled mode with a tidal volume of 10 ml kg−1 and a respiratory rate of 12 bpm. The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score were assessed first for the neutral head position and then for the extended, flexed, and rotated head positions in a random order. RESULTS: All parameters were similar for the rotated head and neck position and the neutral position. Compared with the neutral position, the oropharyngeal leak pressure and peak inspiratory pressure decreased in the extended position but increased significantly in the flexed position (P<0.001). However, the expiratory tidal volume and ventilation score decreased significantly in only the extended position (P<0.001) but were similar in the flexed and neutral positions. CONCLUSIONS: Ventilation was not adversely affected in the rotated or flexed head and neck positions, whereas head and neck extension negatively influenced ventilation. Clinically, it is better to avoid head and neck extension during ventilation with an air-Q® SP airway. CLINICAL TRIAL REGISTRATION: NCT02402387.
Full Text
https://academic.oup.com/bja/article-lookup/doi/10.1093/bja/aew448
DOI
10.1093/bja/aew448
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Myoung Hwa(김명화) ORCID logo https://orcid.org/0000-0003-4723-9425
Kim, Hyun Joo(김현주) ORCID logo https://orcid.org/0000-0003-1963-8955
Bai, Sun Joon(배선준) ORCID logo https://orcid.org/0000-0001-5027-3232
Yoo, Young Chul(유영철) ORCID logo https://orcid.org/0000-0002-6334-7541
Lee, Ki Young(이기영) ORCID logo https://orcid.org/0000-0003-4893-3195
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/154331
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