Kumar A
Laryngoscope. 1981 Oct;91(10):1678-94. doi: 10.1288/00005537-198110000-00014.
In the Torok monothermal differential caloric test, each ear is irrigated with 10 ml and 100 ml of water at 20 degrees C in 5 and 20 sec., respectively. The intensity of the induced nystagmus is expressed in terms of frequency at culmination. The ratio between the weak and strong caloric responses may be normal of disproportionately large or small. When large, the ratio exceeds 3.5 and is called vestibular decruitment, a sign of labyrinthine disease. A ratio of 1.1 or less is called vestibular decruitment, a sign indicative of posterior fossa abnormality. Of 54 patients showing decruitment, a central lesion was confirmed in 51, an identification rate of 94%. The test is thus valuable in differentiating labyrinthine from retrolabyrinthine lesions.
在托罗克单温差热试验中，分别于5秒和20秒内向每只耳朵灌注10毫升和100毫升20摄氏度的水。诱发眼震的强度以峰值频率表示。冷热反应的强弱之比可能正常，也可能不成比例地过大或过小。当比值较大时，超过3.5，称为前庭衰减，是迷路疾病的征象。比值为1.1或更小称为前庭衰减，是后颅窝异常的征象。在54例出现衰减的患者中，51例证实有中枢病变，识别率为94%。因此，该试验在鉴别迷路性病变和迷路后病变方面很有价值。
