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Efficacy of a new dual channel laryngeal mask airway, the LMA®Gastro™ Airway, for upper gastrointestinal endoscopy: a prospective observational study


Terblanche, NCS and Middleton, C and Choi-Lundberg, DL and Skinner, M, Efficacy of a new dual channel laryngeal mask airway, the LMA Gastro Airway, for upper gastrointestinal endoscopy: a prospective observational study, British Journal of Anaesthesia, 120, (2) pp. 353-360. ISSN 0007-0912 (2018) [Refereed Article]

Copyright Statement

© 2017 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

DOI: doi:10.1016/j.bja.2017.11.075


Background: Significant cardiorespiratory events are frequent in patients undergoing gastrointestinal endoscopy. Central to the occurrence of respiratory events is an unsecured airway. This study sought to determine the efficacy of a new laryngeal mask airway, the LMA®GastroTM Airway (Teleflex Medical, Athlone, Ireland), in patients undergoing upper gastrointestinal endoscopy. New design features include a dedicated channel for oesophageal intubation and separate channel with terminal cuff for lung ventilation.

Methods: In a prospective, open label, observational study, 292 ASA physical status classification 1 and 2 patients at low risk of pulmonary aspiration undergoing upper gastrointestinal endoscopy received i.v. propofol anaesthesia and standardized insertion of the LMA®GastroTM Airway. Endoscopy outcomes included insertion success, first attempt success, and ease of endoscope insertion. LMA®GastroTM Airway outcomes included insertion success, first attempt success, ease of insertion, lowest oxygen saturation, airway compromise, laryngospasm, bloodstained device, and sore throat.

Results: Per protocol analysis (n¼290), the endoscopy success rate amongst the cohort with successful LMA®GastroTM Airway insertion was 99% [95% confidence interval (CI): 98, 100]. LMA®GastroTM Airway insertion success rate (n¼292) was 99% (95% CI: 98, 100). For endoscopy and LMA®GastroTM Airway insertion success, the lower limit of the 95% CIs was at least 98%, indicating LMA®GastroTM Airway efficacy. Median (inter-quartile range) lowest intraoperative oxygen saturation was 98% (98, 99). Only one serious adverse event occurred (re-admission for sore throat and inability to tolerate fluids) and was reported to the Tasmanian Health and Medical Human Research Ethics Committee.

CONCLUSIONS: The LMA®GastroTM Airway appears effective for clinical use in upper gastrointestinal endoscopy.

Item Details

Item Type:Refereed Article
Keywords:airway management, gastroenterology, laryngeal mask airway
Research Division:Biomedical and Clinical Sciences
Research Group:Clinical sciences
Research Field:Anaesthesiology
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Terblanche, NCS (Dr Nico Terblanche)
UTAS Author:Choi-Lundberg, DL (Dr Derek Choi-Lundberg)
UTAS Author:Skinner, M (Dr Marcus Skinner)
ID Code:125019
Year Published:2018
Web of Science® Times Cited:32
Deposited By:Medicine
Deposited On:2018-03-23
Last Modified:2019-04-01

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