A STUDY OF VOICE CHANGES IN SPASMODIC DYSPHONIA AFTER BOTULINUM THERAPY
Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2016, Vol 5, Issue 22
Abstract
BACKGROUND Spasmodic dysphonia is a neurological disorder, which can give the voice a strained quality. There is currently no cure for spasmodic dysphonia. The most common treatment for spasmodic dysphonia is the injection of botulinum toxin. METHODS Botulinum toxin A injection was performed in 10 patients with adductor spasmodic dysphonia. Voice handicap index scoring and voice analysis was done pre- and post-injection. Fundamental frequency, standard deviation of fundamental frequency, jitter, shimmer, mean phonation time and voice noise energy was studied in voice analysis. These voice parameters were measured from sustained phonation of vowel /a/. RESULTS Results of study indicated, a) Spasmodic dysphonia patients had high mean values for voice handicap index score and all voice parameters. b) All parameters were reduced significantly post botulinum therapy, but remained higher than their normal value. c) All voice parameters except jitter showed strong positive correlation with voice handicap index in all domains. Jitter showed moderate positive correlation with total score, physical and emotional domain and strong positive correlation with functional domain. CONCLUSION Botulinum toxin A injection improves voice in cases of spasmodic dysphonia, significantly still post procedure voice does not return to normal
Authors and Affiliations
Sanajeet Singh, Arun , Suresh , Jeevan , Manoj Kanzhuly, Nikhil , Kamal Joshi , Abhipsa
Keywords
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- EP ID EP154365
- DOI 10.14260/jemds/2016/268
- Views 68
- Downloads 0
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