Subjective visual horizontal in patients with posterior canal benign paroxysmal positional vertigo
Subjective visual horizontal in patients with posterior canal benign paroxysmal positional vertigo
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DOI：
10.1080/00016480601053115
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发表时间：
2007-01-01
影响因子：
1.4
通讯作者：
Iwasaki, Shinichi
中科院分区：
文献类型：
--
作者：
Ushio, Munetaka;Murofushi, Toshihisa;Iwasaki, Shinichi
结论后半规管良性阵发性位置性眩晕（p-BPPV）患者可在患侧前庭系统出现轻度兴奋。Objective. p-BPPV被认为是由从椭圆囊黄斑脱落的小颗粒引起的。虽然主观视觉水平（SVH）主要反映椭圆囊功能，但有关p-BPPV患者SVH的文献较少。本研究的目的是阐明p-BPPV是否可以影响SVH。病人和方法。入组了28例单侧特发性p-BPPV患者。作为比较，17例前庭神经炎和45例小脑桥脑角（CPA）肿瘤患者也进行了检查。为了测量SVH，我们使用了一种在患者面前有红色发光二极管（LED）条的设备。受试者被要求在一个完全黑暗的房间里旋转杆到他们感觉水平的位置。结果82.1%（23/28）的p-BPPV患者SVH偏向健侧向下。SVH从真实水平到未受影响侧向下的平均+/- SD偏差为0.49 +/-1.21度。前庭神经炎患者SVH偏向患侧，占88.2%; CPA肿瘤患者SVH偏向患侧，占75.6%。
Conclusion. Patients with posterior canal benign paroxysmal positional vertigo (p-BPPV) could have mild excitation in the vestibular system on the affected side. Objective. p-BPPV is considered to be caused by small particles dislodged from the utricular macula. While subjective visual horizontal (SVH) mainly reflects utricular function, there is less documentation on SVH in patients with p-BPPV. The purpose of this study was to clarify whether p-BPPV could affect SVH. Patients and methods. Twenty-eight patients with unilateral idiopathic p-BPPV were enrolled. For comparison, 17 patients with vestibular neuritis and 45 patients with cerebello-pontine angle (CPA) tumor were also examined. For measurement of SVH, we used a device that has a red bar of light-emitting diodes (LEDs) in front of the patient. Subjects were asked to rotate the bar to the position that they felt was horizontal in a completely dark room. Results. Deviation of SVH toward the unaffected side down was seen in 82.1% (23/28) of patients with p-BPPV. Mean +/- SD deviation of SVH from the true horizontal to the unaffected side down was 0.49 +/- 1.2 1 degrees. Conversely, deviation of SVH was toward the affected side down in 88.2% of patients with vestibular neuritis and in 75.6% of patients with CPA tumor.