Evaluation of Swallowing Sound in Patients with Dysphasia

采用知情同意法对20例脑血管病伴吞咽困难患者和20例健康人进行吞咽功能评价。研究了下列参数对健康人及吞咽困难患者的诊断作用；1)舌骨上肌的激活时间，2)舌骨上肌的平均振幅，3)吞咽音的持续时间，4)吞咽音的频率特征。结果如下：1) 3ml液体的平均激活时间为442毫秒，5ml为605毫秒，7ml为430毫秒，而吞咽困难组3ml为986毫秒，7ml为1100毫秒，7ml为823毫秒，后者的激活时间明显延长。2)对照组和吞咽困难组的平均振幅差异无统计学意义。3)对照组吞咽音持续时间平均在500msec以内，与吞咽困难组差异无统计学意义。4)吞咽液体3ml和7ml时，吞咽声音的频率特征有显著差异。结论上述检查对吞咽困难的诊断有明显的帮助。

The evaluation of swallowing was performed in 20 patients with cerebral vascular disease complicated with dysphasia and in 20 healthy persons after taking informed consent. The following parameters were studied for the diagnosis of dysphasia in the healthy persons and patients with dysphasia ; 1) activating duration of the suprahyoid musculature , 2)its mean amplitude, 3)continuation time of swallowing sound, 4)frequency characteristic of swallowing sound. The results were as follow ; 1) the mean activating duration was 442 msec for 3ml of fluid, 605 for 5ml, and 430 for 7ml in the control, while it was 986 for 3ml, 1100 for 7ml, and 823 for 7ml in the dysphasia group, indicating significantly prolonged time in the latter. 2) There was no significant difference in the mean amplitude between the control and dysphasia group. 3) Continuation time of swallowing sound was within 500msec on the average in the control which was not significantly different from that of the dysphasia group. 4) The frequency characteristic of swallowing sound showed a significant difference between the results for 3ml and 7ml of fluid swallowed. it was concluded that the above mentioned examinations were clearly useful for diagnosis of dysphasia.