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Effects on vocal function and incidence of laryngeal disorder when using a laryngeal mask airway in comparison with an endotracheal tube

Published online by Cambridge University Press:  16 August 2006

M. Zimmert ,
P. Zwirner ,
E. Kruse  and
U. Braun
M. Zimmert
Affiliation:
Department of Anaesthesiology, Rescue and Intensive Care Medicine, University of Göttingen, Germany
P. Zwirner
Affiliation:
Department of Phoniatrics and Pedaudiology, University of Göttingen, Germany
E. Kruse
Affiliation:
Department of Phoniatrics and Pedaudiology, University of Göttingen, Germany
U. Braun
Affiliation:
Department of Anaesthesiology, Rescue and Intensive Care Medicine, University of Göttingen, Germany
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Abstract

A study of 56 patients was undertaken to determine whether there is a difference in the effect of the laryngeal mask airway and the endotracheal tube on the vocal tract after short-duration anaesthesia. All the patients were interviewed pre- and post-operatively.In 43 patients, it was possible to assess the larynx using videoendoscopy and videostrobolaryngoscopy both pre- and post-operatively. Selected acoustic characteristics were investigated in 51 patients pre- and 18–24 h post-operatively. Thirty-four patients that did not have anaesthesia were used as an age-matched control.

The interview showed, that patients in the LMA group complained less frequently of having post-operative complained less frequently of having post-operative demonstrated minor lesions of the vocal tract in six patients in the ETT group and in one patient in the LMA group. Of the 12 voice variables evaluated, there was no significant difference in any parameter between the two groups. Both groups had a higher fundamental frequency post-operatively.

Keywords

intubation traumalaryngeal mask airwayendotracheal intubationacoustic measures
Type
Original Article
Information
European Journal of Anaesthesiology , Volume 16 , Issue 8 , August 1999 , pp. 511 - 515
Copyright
1999 European Society of Anaesthesiology

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