An Acoustic Study on Voice Change after Tonsillectomy

Article information

Kosin Med J. 2012;27(2):127-131

Publication date (electronic) : 2012 December 27

doi : https://doi.org/10.7180/kmj.2012.27.2.127

Hwan Ho Lee , Joo Yeon Kim , Yong Hyeon No

Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Kosin University, Busan, Korea.

Corresponding Author: Joo Yeon Kim, Department of Otolaryngology-Head and Neck Surgery, Kosin University, College of Medicine, 34, Amnam-dong, Seo-gu, Busan 602-702, Korea. TEL: +82-51-990-6248, FAX: +82-51-245-8539, oooo95@hanmail.net

Received 2012 May 24; Revised 2012 July 11; Accepted 2012 September 28.

Abstract

Objectives

Many people have been concerned about voice change after tonsillectomy. The purpose of this study is to analyze changes in the voice and to think about changes in the vocal tract after surgery by using CSL-MDVP.

Methods

Data of 27 patients who underwent tonsillectomy were prospectively evaluated. Acoustic analysis was performed before, after 1 week, after 1 month from the surgery. Nasometer was also conducted.

Results

In acoustic analysis, there were no significant changes in F0, jitter, shimmer, NHR, VTI, SPI. But vAM was statistically increased. Vowels and nasal consonants formant frequency analysis results in patients showed no statistically correlation in 1months after tonsillectomy. Although the statistically increased in the nasal consonants /하나/.

Conclusions

Although the temporary increase or decrease in the acoustic factor or formant in the vowels and nasal consonants after tonsillectomy, but most factors are make no difference. The voice change that come postoperatively could be considered as no concern, but surgeons need to aware of various facts, which can affect voice changes before the surgery.

Keywords: Tonsillectomy; Voice

References

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Article information Continued

Table 1

Age and sex distribution (n=27)

Table 2

The change of voice parameters before, 1 weeks and 1 months after tonsillectomy and adenoidectomy

^*P < 0.05: compared with pre op

Table 3

Mean value of formant frequencies of vowels and nasal consonants

^*P < 0.05 : compared with pre op

^*F1, F2: First and second formant frequency, respectively