S200 – Ventricular Folds in Laryngeal Dystonia Treated with Botox

ObjectivesAnalyze the behavior of Vestibular Folds(VF) in Adductor Laryngeal Dystonia(ALD) after and before the treatment with unilateral botulinum toxin injection(BTX) during different laryngeal tasks, comparing treated side(IPSI) and opposite side (CLT).Methods23 patients with adductor laryngeal dystonia were studied retrospectively. Categorical data were obtained about ventricular fold medial compression from qualitative judgment of the flexible laryngoscopic dynamic examination. It was realized after and before BTX comparing the compression grade of VF in IPSI with CLT. The VF medial compression was graduated in 4 points scale. The tasks were sustained phonation of /e/ and /i/, during inspiration, soft breathing, whispering, emissions with voiceless sounds and voiceful sounds, sniff and whistling. McNemar and Wilcoxon tests were used to statistical analysis.ResultsStatistical significance was noted on improvement of medial compression of CLT and on reduction of medialization of IPSI as follow: soft br...