Journal List > J Korean Thyroid Assoc > v.7(1) > 1056572

J Korean Thyroid Assoc. 2014 May;7(1):77-82. Korean.
Published online May 30, 2014.  https://doi.org/10.11106/jkta.2014.7.1.77
Copyright © 2014. the Korean Thyroid Association. All rights reserved.
Aerodynamic Analysis of Voice in Patients with Thyroidectomy
YuJeong Shin,1 KiHwan Hong,2,3 YongTae Hong,2 JungSeuk Oh,2 YunSub Yoon,2 and HyunDoo Lee2
1Department of Speech-Language Therapy, Chonbuk National University-Chonbuk National University Hospital, Jeonju, Korea.
2Department of Otolaryngology-HNS, Chonbuk National University-Chonbuk National University Hospital, Jeonju, Korea.
3Research Institute of Clinical Medicine of Chonbuk National University-Chonbuk National University Hospital, Jeonju, Korea.

Correspondence: KiHwan Hong, MD, Research Institute of Clinical Medicine of Chonbuk National University-Chonbuk National University Hospital, Geumam-dong, Jeonju 561-756, Korea. Tel: 82-63-250-1172, Fax: 82-63-250-1986, Email: khhong@chonbuk.ac.kr
Received March 12, 2014; Revised April 28, 2014; Accepted May 13, 2014.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Abstract

Background and Objectives

This study is to prospectively compare and analyze the aerodynamic changes in the patients with thyroid cancer before and after surgery. Changes in vocal function before and after thyroidectomy were examined using aerodynamic and related assessments.

Materials and Methods

Twenty one patients were evaluated preoperatively, 5-7 days and 6-7 weeks postoperatively to assess aerodynamic outcomes after thyroidectomy. Glottal input power (GIP), glottal efficiency (GE) and maximum phonation time (MPT), were determined the time of before surgery, 5-7 days after surgery and 6-7 weeks after surgery.

Results

According to the comparison analysis of the three periods, GIP with /pi/ phonation was significantly reduced at time of 5-7 days and 6-7 weeks after surgery, but not in the /phi /and /p'i/ phonations. GE was significantly reduced in the /pi/, /phi /and /p'i/ phonations at time of 5-7 days and 6-7 weeks after surgery. MPT was significantly reduced at time of 5-7 days after surgery significantly.

Conclusion

Aerodynamic assessment showed systematic changes in vocal function associated with thyroidectomy. These results should be useful data for vocal management in individuals who have had thyroidectomy and for assessment of voice disorders in clinical settings.

Keywords: Thyroidectomy; Aerodynamic study

Figures


Fig. 1
Analytical screen for glottal input power & glottal efficiency (Aerophone II).
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Fig. 2
Comparison of preoperative and postoperative results of glottal input power.
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Fig. 3
Comparison of preoperative and postoperative results of glottal efficiency.
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Fig. 4
Comparison of preoperative and postoperative results of MPT.
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Tables


Table 1
Comparison of preoperative and postoperative results of glottal input power
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Table 2
Comparison of preoperative and postoperative results of glottal efficiency
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Table 3
Comparison of preoperative and postoperative results of MPT
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Table 4
Inferential statistical (RM-ANOVA) results by session
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