Voz pré e pós-tireoidectomia: análise perceptivo-auditiva e acústica

• Autor(a) principal: Santos, Alexandra de Oliveira
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da PUC_SP
• Texto Completo: https://tede2.pucsp.br/handle/handle/12236
• topic: Qualidade vocal; Qualidade da voz; Tireoidectomia; Voz; Thyroidectomy; Voice; Vocal quality; CNPQ::CIENCIAS DA SAUDE::FONOAUDIOLOGIA

AIM: analyzing vocal quality in women submitted to thyroidectomy, from perceptive and acoustic point of view, in pre and post-surgery moments. Rationale: vocal disorders are not common in people who show preserved function in preserved laryngeal nerves function. These disorderss can be caused by thetemporary malfunction of the strap muscle after surgery, retraction of scars and laryngotracheal fixation with impairment of vertical movement. Thus, this study springs from the basis of people submitted to thyroidectomy and who keep vocal chords movement can develop disorderss from the glottic sphere with compensation mechanisms from the superglottic sphere. METHOD: the case study was composed of 26 people from the female gender, ranging from 19 to 57 years old, submitted to total or partial thyroidectomy. The speech samples collection included the emission of the keyword arara , in mid-position in the vehicle phrase: say____ low . For the perceptive evaluation, the speech samples were presented to three judges who assessed the presence of glottic and/or supraglottic disorderss on the vocal tract between pre and postoperatory moments. From the acoustic point of view, the speech data was analysed in PRAAT software, in which the tonic vowel (a) was selected from the keyword arara for extraction of fundamental frequency measures (f0) and frequency of formants (F1, F2 e F3). RESULTS: 16 (61,5%) people displayed complaints of symptoms of superior aereal canals in postoperatory from thyroidectomy. The most frequent vocal complaints were: mucus with 11 (42%), difficulty in swallowing with 7 (27%), hoarse voice with 6 (23%). In the perceptive analysis from the post-surgery 15 (57,7%) people displayed vocal disorders in the glottic sphere. In the post-surgery, from the 17 (65,4%) people with glottic disorders, 9 (34,6%) displayed supraglottic ajustments. There was no statistical difference between the pre and postoperatory moments from the perceptive analysis. In the acoustic analysis, the value of f0 did not show great changes between the pre and postoperatory, in which 7(26,6%) and 8 (30,8%) people displayed the value of f0 below the reference value. Mainly the values of F1 in pre and postoperatory moments, respectively in 17 (65,4%) and 16 (61,5%) people, and in F2 in all people with exception of one in the pre-operatory, suggest high strap muscle, advanced tip of the tongue, lowered tongue body and faringeal constriction. Diminished values in F3 in eleven (42,3%) people in postoperatory can be related to retraction in scars which limits the vertical movement from the strap muscle, keeping it low