Superior laryngeal nerve paresis and paralysis

Computational fluid dynamics in the assessment of patients' postoperative status after glottis-widening surgery

“…20,21 Dursun et al reported an overwhelming inflammatory etiology of the paralysis, and a preponderance of women. 22 The frequency of reported significant majorities of women is associated with the more frequent incidence of thyroid disease among women, and hence the necessity to perform thyroid surgery. 23 During the flow of air across the glottis a pressure drop (ΔP) occurs, which is caused by perturbations of the flow.…”

Injury of the external branch of the superior laryngeal nerve in thyroid surgery

“…The authors also described that the aryepiglottic fold is shortened on the side of the paralysis (58). There may be bowing and high mismatch with inferior displacement of the vocal cord on the affected side (31,52,54,59), as well as vocal fold hypomobility, mucosal asymmetrical waveform excursion and phase asymmetry (31,54).…”

“…Mild changes to the speaking voice have been described, as the singing voice is more severely affected. Symptoms are described among several authors as a voice that is weak, breathy, monotonous and characterized by compression on the pitch range with inability to achieve high pitch tasks (52)(53)(54)(55). Patients may complain of weakness, tightness, and increased effort to speak (52,55).…”

“…Voice therapy is felt to be the first treatment option for EBSLN dysfunction, mainly for its safety (64,66). According to Dursun et al (54), who reported on their experience with 126 patients with suspected SLN palsies, voice therapy should focus on vocal hygiene, gentle stretching exercises, singing exercises designed to build strength and prevention of muscle tension dysphasia (54). Recovery often takes many months.…”

Paralisia do músculo cricoaritenóideo lateral: relato de caso como contribuição ao estudo da anatomia funcional da laringe

“…Nos últimos anos a eletromiografia da laringe (EMG) vem sendo útil no diagnóstico das alterações de mobilidade das pregas vocais, sobretudo diferenciando as paralisias das fixações, e também fornecendo dados para o prognóstico e localização de lesões neuromusculares [1][2][3][4][5][6][7][8][9][10] , sendo um método objetivo de avaliação da atividade neuromuscular 3,11,12 . A paralisia da prega vocal pode ser resultado de lesão central ou periférica que envolve o nervo vago acima da saída do nervo laríngeo superior (NLS) ou mais distalmente, sem seu envolvimento, isto é, comprometendo apenas o nervo recorrente (NR).…”