Effects of Neuromuscular Electrical Stimulation (NMES) on the vocal functions in post radiation therapy patients with Nasopharyngeal Carcinoma (NPC)
Refereed conference paper presented and published in conference proceedings


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AbstractBackground: Vocal impairment following radiation therapy in non-laryngeal head and neck cancer patients has been widely documented. There is emerging evidence on the use of neuromuscular electrical stimulation (NMES) to vocal rehabilitation. However, there is limited studies on the effects of NMES for vocal rehabilitation on patients with head and neck carcinoma following radiation therapy. This study aims to evaluate the effects of NMES on vocal functions for patients with nasopharyngeal carcinoma (NPC) following radiation therapy with or without chemotherapy.
Methodology: Newly treated NPC patients were recruited and randomized into NMES or swallowing exercise group. Vocal function was measured using The Voice Handicap Index-30 (VHI-30) at four intervals, pretreatment, immediately posttreatment, 6-month postrandomization and 12-month postrandomization. Fifty-seven participants completed all of the follow-up assessments.
Results: No significant changes in vocal functions were noted with the NMES group. However, the swallowing exercise group showed a short-term deterioration of vocal functions at 6-month postrandomization. This short-term change in vocal functions was attributed to the scores from the functional and physical domains. VHI-30 total and subscale scales returned to the baseline level for both groups at 12-month postrandomization.
Conclusion: This study showed that without effective voice therapy, vocal functions in the patients with NPC deteriorated significantly at 6 to 9 months after completion of radiation or chemoradiation therapy. NMES when applied early following radiation or chemoradiation therapy for patients with NPC could provide short-term benefits on vocal functions.
All Author(s) ListLaw T., Lee K. Y. S., Wong R. W. M., Leung Y., Ku P. K. M., Wong E. W. Y., Li H. N., Ng L. K. Y, van Hasselt C. A., Tong M. C. F.
Name of ConferenceHong Kong Speech and Hearing Symposium 2016
Start Date of Conference22/10/2016
End Date of Conference23/10/2016
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Proceedings TitleHong Kong Speech and Hearing Symposium 2016
Year2016
Month10
Pages35
LanguagesEnglish-United States
Keywordsspeech therapy, voice, NPC

Last updated on 2018-22-01 at 05:58