反回神経麻痺に対する声帯内方移動術の施行時期

概要

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This study was undertaken to clarify the length of time needed to follow up after onset of recurrent nerve paralysis for medial shift of the vocal cord.The following items were investigated:1) Possibility of recovery of vocal cord movements in the affected side.2) Looseness and atrophy of the intrinsic laryngeal muscles in the affected side following the onset of recurrent nerve paralysis.3) Compensatory overcrossing of the vocal cord in the normal side.For 1), the evoked EMG test is available, which can give information as to whether movements of the vocal cord recover or not. For 2), dogs with injured recurrent nerves were used for this study. The result showed that the atrophy of the intrinsic laryngeal muscle virtually never increases 2 months after nerve injury. For 3), compensatory overcrossing was observed only in 2.5 percent of the 436 patients with recurrent nerve paralysis. Alleviation of hoarseness is, therefore, not expected.As above, the author obtained a result that the medial shift of the vocal cord can be performed 2 months after the onset of recurrent nerve paralysis.
耳鼻咽喉科臨床学会の論文