Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara City, Nara, Japan.
J Int Adv Otol. 2021 Mar;17(2):121-126. doi: 10.5152/JIAO.2021.9056.
To investigate otolithic function before and after endolymphatic sac drainage (ELSD) for Meniere's disease (MD) by using the subjective visual vertical test (SVV) in the upright and tilted positions.
Eighteen patients with definite unilateral MD diagnosed in accordance with the American Academy of Otolaryngology Head and Neck Surgery criteria in 1995 and Barany Society criteria in 2015 were included. SVV in the upright position and the head-tilt position was performed preoperatively and on postoperative days 1, 5, 8, 28, and 112. Changes in the results of SVV in the upright position (UP-SVV) and head-tilt perception gain (HTPG) after surgery were measured.
The average UP-SVV values significantly changed from 0.05° by the affected side before surgery to 2.5° by the unaffected side on the fifth postoperative day, followed by recovery to the normal range by the eighth postoperative day. The HTPG values for the unaffected side showed the maximum increase on postoperative day 5 during the present study period, although the values in the affected side did not alter significantly.
ELSD for MD is a surgical treatment that involves less risk of otolith function damage and abnormalities in gravitational cognition. SVV in the head-tilt position could be one of the neuro-otologic examinations used to easily understand the vestibular compensatory process.
通过主观视垂直测试（SVV）在直立和倾斜位置，研究梅尼埃病（MD）患者行内淋巴囊引流术（ELSD）前后的耳石功能。
纳入 18 例 1995 年美国耳鼻咽喉头颈外科学会和 2015 年 Barany 学会诊断的单侧 MD 患者。术前及术后第 1、5、8、28 和 112 天行直立位和倾斜位 SVV。测量术后直立位 SVV（UP-SVV）和倾斜位感知增益（HTPG）结果的变化。
术前患侧 UP-SVV 平均从 0.05°变为术后第 5 天的健侧 2.5°，术后第 8 天恢复正常范围。在本研究期间，健侧 HTPG 值在术后第 5 天增加最大，尽管患侧值无明显变化。
MD 的 ELSD 是一种手术治疗方法，耳石功能损伤和重力认知异常的风险较小。倾斜位 SVV 可能是一种用于了解前庭代偿过程的神经耳科检查之一。
