Pressões do segmento faringoesofágico em diferentes tarefas fonatórias na manometria de alta resolução em cantores.

• Autor(a) principal: Vaiano, Thays Cristina Garcia [UNIFESP]
• Data de Publicação: 2018
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=6923748; https://repositorio.unifesp.br/handle/11600/53005
• topic: Pressures; Pharynx; Thorax; Manometry; Voice; Phonation; Voz; Manometria; Pressão; Esôfago; Fonação

Introduction: Since air pressure provides energy for vocal fold vibration, the course of this pressure through the vocal tract is relevant to the study of vocal function. High-resolution manometry (HRM), a technology developed to measure esophageal intraluminal pressure using a catheter with a series of closely spaced sensors, represents a potential tool for measuring pharyngoesophageal phonation pressures. Methods: with HRM transnasal catheter in place, 12 (6 males, mean age 27) professional singers were asked to produce 4 different vocal tasks at low, medium and high vocal loudness: vowel /ae/, ascending 5 note scale, word /hey/ and word /go/. Pressures were measured at pharynx, upper esophageal sphincter (UES) and thorax. Results: Thoracic pressures are higher during vocalization than at rest and as vocal loudness increase, so does the pressure. Pressures at the UES do not increase significantly during vocalization, but muscle bundle recruitment differs according to vocal loudness. The pharynx does not present a linear pressure increment following an increase in vocal loudness. Pharyngoesophageal pressure magnitude does not change significantly among different vocal tasks. Conclusions: HRM is a valuable tool for measuring pharyngoesophageal pressures during phonation. Different from the UES and pharynx, thoracic pressures are higher during phonation than at rest and tend to increase with vocal loudness increment. The phonatory task nature does not significantly interfere with the pressure magnitude of the pharyngoesophageal segment. The topographic plot provides additional data about the physiology of phonation, especially at the UES region.