Changes in Oral Vowel Sounds and Hyoid Bone Movement After Thyroidectomy

Abstract

ObjectivesVoice and speech alterations after total thyroidectomy may be associated with other extralaryngeal factors, such as neck muscle dysfunction and neck scar contracture. We evaluated the acoustic characteristics of oral vowel sounds and changes in hyoid bone movement before and after thyroidectomy.MethodsTwenty-nine female patients undergoing total thyroidectomy were included. Fundamental frequencies (Fo), formants and vowel space areas were evaluated before surgery and 7 days and 3 months after surgery to acoustically analyze the oral vowel sounds. Videofluoroscopic images were taken at the same times to evaluate hyoid bone movement.ResultsThe Fo levels of seven vowels decreased significantly after surgery. The vowel formant changes the F1 of vowel /[e]/ decreased significantly from baseline at 3 months postoperatively, and the F3 of vowel /[i]/ decreased significantly from baseline 7 days postoperatively. The change in the vowel space area was not observed. The Y coordinate of the vowels /[i]/ and /[e]/ decreased significantly from baseline 7 days postoperatively due to changes in hyoid movement.Conclusion The damage to the neck muscles after thyroidectomy changes in Fo, formant and hyoid bone position. These quantitative results could be used as basic data for voice management in patients who undergo thyroidectomy.

A Prospective study for effect of wound or scar tissue massage after thyroidectomy on neck discomfort and voice change

“…This maneuver might damage the strap muscles which interfere with the normal contour of the surrounding tissues, this in turn leads to contracture of the wound and adhesion formation between the larynx and its surrounding, which diminish it's vertical movement that make the patient experience the neck pulling sensation and phonation change during speech. [26][27][28] The technique and procedure of wound massaging probably lead to decrease those adhesions by elevating the circulation to that area, thus leading to destruction of the adhesion, this in turn can aid in the process of healing postoperatively.…”

“…The phonation change after total thyroidectomy operation has been historically believed to be as the outcome of iatrogenic injury to the laryngeal nerves at the time of thyroidectomy operatin. 28,32 Operation trauma to the recurrent laryngeal nerve is un wanted concerning morbidity outcome of thyroid gland operation. As well as, changing in the voice it is also has been documented in a number of cases when there was an intact laryngeal nerve.…”

Revisão Sistemática Sobre Os Formantes E a Produção Da Voz E Fala

“…Com relação à cirurgia do seio endonasal, houve diminuição das larguras de banda dos formantes no pós-operatório e os picos de energia dos formantes aumentam proporcionalmente(GOGNIASHVILI, JAPARIDZE e KHUJADZE, 2009). Já na tireoidectomia (HONG et al, 2016), a média F1 da vogal /e/ diminuiu significativamente até 3 meses no pós-operatório (de 599,72 a 560,67), sendo justificada pela alteração na limitação da abertura da boca, com a posição da língua mais elevada.…”

“…Já a hipertrofia adenotonsilar(KARA, ÖZTÜRK E ÖZER, 2013), a tireiodectomia (HONG et al, 2016) e acirurgia do seio endonasal (GOGNIASHVILI, JAPARIDZE e KHUJADZE, 2009) modificam a posição dos órgãos fonoarticulatórios, constatados acusticamente, após a realização de cirurgia.…”

“…Nos últimos anos, o estudo das vogais orais vem trazendo informações diversificadas que contribuem para diversos campos de atuação, seja do ponto de vista acústico, fisiológico, patológico, entre outros (GAMA e BEHLAU, 2009;GONÇALVES et al, 2009;SVICERO, 2009;BROD e SEARA, 2014;FREITAS et al, 2015;HONG et al, 2016;MAXFIELD, PALAPARTHI e TITZE, 2016), abrangendo especificidades com diferentes aspectos metodológicos resultando em um avanço para a análise da produçao da voz e fala.…”