Slavit D H, Maragos N E, Lipton R J
Department of Otorhinolaryngology, Mayo Clinic, Rochester, MN 55905.
Laryngoscope. 1990 Aug;100(8):844-8. doi: 10.1288/00005537-199008000-00009.
Isshiki type III thyroplasty is a laryngeal framework surgical procedure that lowers a patient's pitch. To objectively assess the procedure, preoperative and postoperative voice recordings, as well as electroglottography and photoglottography were performed. Jitter, shimmer, and glottographic quotients were measured to assess changes in vibratory pattern. The mean and range of frequencies in contextual speech was also determined. Analysis of the preoperative and postoperative data from two patients with over 1 year follow-up showed a decrease in frequency of vibration. Postoperatively, the vocal folds still vibrated in a regular pattern as described by the myoelastic-aerodynamic theory. There was no increase in jitter or shimmer quotient. The Isshiki type III thyroplasty appears capable of lowering fundamental frequency of speech without adversely affecting the vibratory mode of the vocal folds.
一色III型甲状成形术是一种降低患者音调的喉框架外科手术。为了客观评估该手术，进行了术前和术后语音记录，以及电子声门图和光声门图检查。测量了抖动、闪烁和声门图商数以评估振动模式的变化。还确定了语境语音中的平均频率和频率范围。对两名随访超过1年的患者的术前和术后数据进行分析，结果显示振动频率降低。术后，声带仍按照肌弹性-空气动力学理论描述的规律模式振动。抖动或闪烁商数没有增加。一色III型甲状成形术似乎能够降低语音的基频，而不会对声带的振动模式产生不利影响。
