Aerodynamic Analysis of Voice in Patients with Thyroidectomy

YuJeong Shin; KiHwan Hong; YongTae Hong; JungSeuk Oh; YunSub Yoon; HyunDoo Lee

doi:10.11106/jkta.2014.7.1.77

Journal List > J Korean Thyroid Assoc > v.7(1) > 1056550

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Shin, Hong, Hong, Oh, Yoon, and Lee: Aerodynamic Analysis of Voice in Patients with Thyroidectomy

Original Article

J Korean Thyroid Assoc 2014;7(1):77-82.

Published online: 30 May 2014

DOI: https://doi.org/10.11106/jkta.2014.7.1.77

Aerodynamic Analysis of Voice in Patients with Thyroidectomy

YuJeong Shin¹, KiHwan Hong^2,³, YongTae Hong², JungSeuk Oh², YunSub Yoon², 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, E-mail: khhong@chonbuk.ac.kr

Received 12 March 2014 Revised 28 April 2014 Accepted 13 May 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/4.0/) 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

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Fig. 1.

Analytical screen for glottal input power & glottal efficiency (Aerophone II).

Fig. 2.

Comparison of preoperative and postoperative results of glottal input power.

Fig. 3.

Comparison of preoperative and postoperative results of glottal efficiency.

Fig. 4.

Comparison of preoperative and postoperative results of MPT.

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