从眼球震颤到空气和水的冷热温度试验。
From nystagmus to the air and water caloric tests.
机构信息
Programa de Pós-Graduação em Distúrbios da Comunicação Humana, Escola Paulista de Medicina, Universidade Federal de São Paulo.
出版信息
Braz J Otorhinolaryngol. 2012 Jul-Aug;78(4):120-5. doi: 10.1590/S1808-86942012000400022.
UNLABELLED
The caloric test is an important tool for the assessment of labyrinthine function.
OBJECTIVE
To compare the nystagmus response in the caloric tests with air at 50ºC and 24ºC and with water at 44ºC and 30ºC.
STUDY DESIGN
Randomized crossover clinical trial.
MATERIALS AND METHODS
40 healthy individuals were submitted to a neurotological evaluation, including caloric tests with air at 50ºC and 24ºC and water at 44ºC and 30ºC.
RESULTS
Comparing the air and water caloric tests, there were no significant differences among the post-caloric nystagmus slow-phase velocity in relation to the stimulation order, between ears and between the values of unilateral weakness and directional preponderance. The slow-phase velocity values were higher with water (p = 0.008, p < 0.001), and cold stimulation produced stronger responses (p < 0.001).
CONCLUSION
Comparing 50ºC and 24ºC air caloric test and 44ºC and 30ºC water caloric test, we observed similar slow-phase velocity values for both ears, higher responses in the cold temperature and in the test with water, and similar results of unilateral weakness or directional preponderance for post-caloric nystagmus in both tests.
目的：比较 50°C 和 24°C 空气及 44°C 和 30°C 水的冷刺激在温度觉试验中的眼震反应。
方法：40 例健康志愿者接受神经耳科学评估，包括 50°C 和 24°C 空气及 44°C 和 30°C 水的温度觉试验。
结果：与刺激顺序、双耳间和单侧轻瘫及优势偏向值相比，冷热温度觉试验间的冷热刺激后半规管眼震慢相速度均无明显差异。水刺激时的慢相速度更高（p = 0.008，p < 0.001），冷刺激产生更强的反应（p < 0.001）。
结论：与 50°C 和 24°C 空气及 44°C 和 30°C 水的温度觉试验相比，双耳的慢相速度值相似，冷刺激和水刺激的反应更强，冷热刺激后半规管眼震的单侧轻瘫或优势偏向值的结果也相似。
Zotero 插件