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

  • Z-H Zhu (a1), J Zheng (a1), L-Y Ying (a1), B-W Zhu (a1), J Qian (a1) and Z-X Ma (a1)...

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.

Copyright

Corresponding author

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

References

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Keywords

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

  • Z-H Zhu (a1), J Zheng (a1), L-Y Ying (a1), B-W Zhu (a1), J Qian (a1) and Z-X Ma (a1)...

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