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Cross-over study of topical anaesthesia with tetracaine solution for transoral rigid laryngoscopy

Published online by Cambridge University Press:  11 September 2012

Z-H Zhu ,
J Zheng ,
L-Y Ying ,
B-W Zhu ,
J Qian  and
Z-X Ma
Z-H Zhu
Affiliation:
Department of Otolaryngology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
J Zheng
Affiliation:
Department of Otolaryngology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
L-Y Ying
Affiliation:
Department of Otolaryngology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
B-W Zhu
Affiliation:
Department of Otolaryngology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
J Qian
Affiliation:
Department of Otolaryngology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
Z-X Ma*
Affiliation:
Department of Otolaryngology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
*
Address for correspondence: Dr ZhaoXin Ma, Department of Otolaryngology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, China Fax: +86 21 58763830 E-mail: mzhx114@163.com
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Abstract

Background:

Transoral rigid laryngoscopy with videostroboscopy is the most practical method to visualise the vocal folds. The optimal topical anaesthesia regimen for transoral rigid laryngoscopy has not yet been established.

Objective:

To compare patient comfort and compliance with various topical anaesthetics for transoral rigid laryngoscopy.

Methods:

Each of 10 patients received a random topical administration of either 2 per cent lidocaine gel, 1 per cent tetracaine gel or 1 per cent tetracaine solution, 10 minutes before undergoing rigid laryngoscopy with videostroboscopy. During follow-up laryngoscopies, the agent with the lowest mean visual analogue scale score for discomfort was then used to study the timing of topical anaesthetic application: the agent was given to the patient 5, 10 or 15 minutes before laryngoscopy (with the timing randomly selected).

Results:

Compared with lidocaine gel or tetracaine gel, laryngoscopy with topical tetracaine solution was more comfortable. There was a statistically significant difference in discomfort score between the 5 and 10 minute application groups, but not between the 10 and 15 minute groups.

Conclusion:

Tetracaine solution, applied topically 10 minutes before transoral rigid laryngoscopy, significantly decreases patient discomfort.

Keywords

LaryngoscopyAnesthesia, LocalTetracaine
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 126 , Issue 11 , November 2012 , pp. 1150 - 1154
Copyright
Copyright © JLO (1984) Limited 2012

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