Avaliação videoquimográfica da vibração de pregas vocais no pré e pós hidratação

Abstract

Keepi ng the body hydrated is one of the factors that contribute to organic and functional laryngeal health, especially for professional voice users. Hydration is considered an important factor for the prevention and treatment of dysphonias. There is no objective evaluation that quantifies water present in the vocal fold tissue. Aim: To evaluate changes in vocal folds investigated through videokymography after internal and external hydration of voice professionals. Study design: Clinical prospective. Material and Method:We assessed six male professional voice users after leaving the workplace (six hours) and without having drunk water for the past four hours. We conducted ENT evaluation, comprising the first laryngeal assessment with laryngoscopy with and without stroboscopic and videokymography. These people were submitted to external and internal laryngeal hydration. They drank two glasses of hydrating solution with electrolytes, Passion Fruit Flavor (total of 300 ml), at room temperature, and external hydration with inhalation of saline solution at 0.9% during 10 minutes. Using videokymography we evaluated the time of open and closed phases during phonation, defining a quotient between these two parameters. Results: We found five subjects with reduced or increased quotient. Conclusion: Videokymography was able to detect differences at the vibrating characteristics of vocal folds before and after hydration.

Hidratação vocal em profissionais e futuros profissionais da voz

“…The effectiveness of hydration for good vocal production is described as one of the important factors in reducing vocal complaints and, consequently, in improving vocal production 14,16 . However, in the literature there is no scientific proof of the ideal quantity of water that needs to be ingested daily in order to maintain the vocal folds hydrated, preventing complaints and vocal changes 14,27 .…”

“…A reduction in the open phase time/closed phase time quotient after hydration, concluding that videokymography was able to detect differences in vibration features in the mucosal wave of vocal folds after hydration of the larynx. In hydrated mucosa, the cycle presents greater time of closed phase, since amplitude of the excursion is increased due to higher flexibility 16 .…”

“…In order to preserve the organic and functional laryngeal health, it is necessary, among other things, to keep the body hydrated, which contributes to the reduction of vocal complaints and, consequently, to the improvement of vocal production, especially in voice professional. Besides, the hydration is considered important in relation to prevention and treatment of vocal disorders 4,13,[15][16][17][18][19][20][21][22] . A dehydration, in turn, alters the viscoelastic properties of the vocal folds, which may contribute to the development of dysphonia and worsening of vocal performance 19,22 .…”

“…A dehydration, in turn, alters the viscoelastic properties of the vocal folds, which may contribute to the development of dysphonia and worsening of vocal performance 19,22 . Regarding the hydration procedures, there is the internal or systemic (intake of water or electrolyte) and external (inhalation of water or saline) 14,16,19,23 , being the water intake the way used in the present study.…”

Atores profissionais de teatro: aspectos ambientais e sócio-ocupacionais do uso da voz

“…However, it can be important allies in a more comprehensive speech rehabilitation improvement and/or rehabilitation program (9,13) . Hydration is an important aspect for the promotion and maintenance of organic and functional healthy of the larynx, mainly applied to individuals who professionally use their voice (9,14,15) . Maintaining adequate hydration is very important for vocal performance, especially for professionals who use this instrument at work.…”