• Br J Anaesth · Sep 2019

    Randomized Controlled Trial Comparative Study

    Ultrasound-guided lung sliding sign to confirm optimal depth of tracheal tube insertion in young children.

    • J H Ahn, E Kwon, S Y Lee, T S Hahm, and J S Jeong.
    • Department of Anaesthesiology and Pain Medicine, Kangbuk Samsung Hospital, Seoul, South Korea.
    • Br J Anaesth. 2019 Sep 1; 123 (3): 309-315.

    BackgroundThe tip of the tracheal tube should lie at the mid-tracheal level after tracheal intubation in paediatric patients. Auscultation does not guarantee optimal positioning of the tracheal tube. We compared auscultation and the ultrasound-guided lung sliding sign to confirm optimal positioning of the tracheal tube in paediatric patients.MethodsWe studied 74 paediatric patients aged 0-24 months of ASA physical status 1-3 who were scheduled for elective surgery under general anaesthesia. All were randomly assigned to one of two groups: depth of tracheal tube confirmed by auscultation (Group A) or using the ultrasound-guided lung sliding sign (Group S).ResultsOptimal positioning of the tracheal tube was observed in 32 of 37 (87%) subjects in Group S and 24 of 37 (65%) subjects in Group A (difference in proportion, 22%; 95% confidence interval, 2-39%; P=0.030). Optimal depth correlated with patient height (adjusted coefficient=0.888, P<0.001).ConclusionsIn paediatric patients younger than 24 months, use of the ultrasound-guided lung sliding sign was more accurate than auscultation for optimal positioning of the tracheal tube.Clinical Trial RegistrationKCT 0003015.Copyright © 2019 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

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