Olszewski Jurek, Pietkiewicz Piotr, Miłoński Jarosław, Bielińska Marzena
Klinika Otolaryngologii i Onkologii Laryngologicznej II Katedry Otolaryngologii UM w Łodzi.
Otolaryngol Pol. 2010 Jun;64(7):32-5. doi: 10.1016/S0030-6657(10)70006-8.
The aim of that work was to evaluate the usefulness of VHIT (Videonystagmography Head Impulse Test) in the diagnostics of injuries to the semicircular canals.
The tests covered 58 patients aged 20-27, including 34 women and 24 men. Any deviations within the vestibular organs was excluded in the interview, otorhinolaryngological examination and full videonystagmographic test. The tests checked functions of the semicircular canals in the following way: in a sitting position and the head leaned forward at 30 degrees the patient was looking at a motionless point while quick movements to the left or right were performed to stimulate a particular lateral semicircular canal. When the vertical semicircular canals were tested the head was inclined laterally to the right side at 45 degrees. Then similar movements were performed forwards (stimulation of the left anterior semicircular canal) and backwards (stimulation of the right posterior semicircular canal). When the head was leaned laterally to the left at 45 degrees the right or left anterior semicircular canal was stimulated respectively. Functions of the canal were determined on the basis of gain (%). RESULTS OF THE TESTS: In 58 patients the gain value for particular semicircular canals was normal, and the mean values presented as follows: the lateral semicircular canal: 11.9% +/- 10.2, the anterior semicircular canal: 17.5% +/- 11.6 and the posterior semicircular canal: 19.2% +/- 13.5, whereas on the left side: 10.3% +/- 7.9, 18.1% +/- 11.1, 15.1% +/- 12.3 respectively. In one man the gain value for the right posterior semicircular canal was found significantly above the standard value--71%.
VHIT showed much more sensitive than a full videonystagmographic test.
该研究的目的是评估视频眼震图头脉冲试验（VHIT）在诊断半规管损伤中的实用性。
测试涵盖58名年龄在20至27岁之间的患者，其中包括34名女性和24名男性。在问诊、耳鼻喉科检查及完整的视频眼震图测试中排除了前庭器官的任何异常。测试以如下方式检查半规管的功能：患者坐姿，头部向前倾斜30度，注视一个固定点，同时向左或向右进行快速运动以刺激特定的外侧半规管。测试垂直半规管时，头部向右侧倾斜45度。然后向前（刺激左前半规管）和向后（刺激右后半规管）进行类似运动。当头部向左倾斜45度时，分别刺激右或左前半规管。根据增益（%）确定半规管的功能。测试结果：58名患者中，特定半规管的增益值正常，平均值如下：外侧半规管：11.9%±10.2，前半规管：17.5%±11.6，后半规管：19.2%±13.5，而左侧分别为：10.3%±7.9、18.1%±11.1、15.1%±12.3。在一名男性中，发现右后半规管的增益值显著高于标准值——71%。
VHIT显示出比完整的视频眼震图测试更敏感。
