Effects on oral topical anesthesia on the characteristics of voice

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Information about Effects on oral topical anesthesia on the characteristics of voice
Health & Medicine

Published on March 9, 2014

Author: andrealuciopirani

Source: slideshare.net

The effects of oral topical anesthesia on the characteristics of voice - Sergio Lorenzo Werling - Andrea Lucio Pirani Profesora Eva Maria Giner Larza

Introduction  The tone of our voice is a very distinctive tract of our personality, and it affects our everyday life in many different ways, as we use it to comunicate and to identify ourselves. Aim  Oral topical anesthesia is used routinely before rigid laryngeal endoscopy, bute we still don't know if this can cause changes in voice quality. In this study, we are going to find whether oral topical anesthesia changes voice quality.

Material & Methods  First of all, it was defined the sample of the patients: we chose adult people from both sex, who required rigid laryngeal endoscopy as part of the routine clinical. A total of 102 patients participated in the study.

Matherial & Methods  The voices of the people participating in the study were recorded before and after the sumministration of the following anesthetics: Oral topical benzocaine (14%) butamben (2%) tetracaine (2%) (ie, cetacaine) spray  Consensus auditory perceptual evaluation of voice (CAPE-V) protocol was used for the voice recordings and was the primary outcome measure.

Matherial & Methods   The recordings were presented in a random way to two blinded speech-language pathologists specialized in voice. Secondary outcome measures were fundamental frequency (F0), jitter, shimmer, and noise-to-harmonics ratio (N/H) on sustained /i/ and speaking F0.The

Results  The words colored in yellow are the factors calculated by the CAPE-V. There was no significant difference in CAPE-V measurements before and after topical anesthesia for all six attributes, and the same happened for other factors like jitter, shimmer, N/H and speaking F0. Overall severity P= 0.145 Roughness P= 0.214 Breathiness P= 0.761 Strain P= 0.053 Pitch P= 0.301 Loudness P= 0.320 Jitter P= 0.315 Shimmer P= 0.942 N/H P=0.128

Conclusion   Although very little changes in the quality of voice were registered, those changes were so little that they were defined as “ not clinically significant”. We can then affirm taht there were no clinically significant voice changes after oral topical anesthesia.

Bibliography  “The Effect of Oral Topical Anesthesia on the Characteristics of Voice” by Amanda Huemail, Jaime Eaglin Moore, Bridget Rose, Stephanie Fort, Edward J. Gracely, Robert T. Sataloff

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