Kim Tae Hwan, Kim Min-Beom
Department of Otolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
Laryngoscope. 2018 Jun;128(6):E228-E233. doi: 10.1002/lary.26864. Epub 2017 Sep 12.
The aim of this study was to identify the difference of gain value in the video head impulse test (vHIT) according to the age of the patient and the direction of the impulse.
All participants were subjected to vHIT with horizontal semicircular canal (HSCC). vHIT with vertical canal (posterior and anterior semicircular canal [PSCC and ASCC]) additionally was performed in 434 participants.
The mean vestibulo-ocular reflex (VOR) gain was maintained in patients in the HSCC at below 70 years (1.025 ± 0.08) and in the vertical canal at below 80 years (PSCC: 0.965 ± 0.12, ASCC: 0.975 ± 0.14). However, the decrease of VOR gain was significant in patients over 70 years in the HSCC (0.978 ± 0.35, P < .001) and in patients over 80 years in the vertical canal (PSCC: 0.828 ± 0.16, ASCC: 0.851 ± 0.13, P < .001). In addition, a VOR gain of rightward impulse was higher than the leftward impulse, but there was no difference based on the direction of impulse in the vertical impulse test.
VOR gain declines with increasing age, over 70 years on the horizontal canal, and over 80 years on the vertical canal. Additionally, horizontal VOR gain of rightward impulse was higher than the leftward impulse in right-eye recordings only, but the vertical canal showed no difference of gain according to the direction of impulse.
2b. Laryngoscope, 128:E228-E233, 2018.
本研究旨在确定视频头脉冲试验（vHIT）中增益值根据患者年龄和脉冲方向的差异。
所有参与者均接受水平半规管（HSCC）的vHIT检查。另外，434名参与者还接受了垂直半规管（后半规管和前半规管[PSCC和ASCC]）的vHIT检查。
70岁以下患者水平半规管的平均前庭眼反射（VOR）增益保持在1.025±0.08，80岁以下患者垂直半规管的平均VOR增益保持在（后半规管：0.965±0.12，前半规管：0.975±0.14）。然而，70岁以上患者水平半规管的VOR增益显著下降（0.978±0.35，P<.001），80岁以上患者垂直半规管的VOR增益显著下降（后半规管：0.828±0.16，前半规管：0.851±0.13，P<.001）。此外，向右脉冲的VOR增益高于向左脉冲，但垂直脉冲试验中根据脉冲方向无差异。
VOR增益随年龄增长而下降，水平半规管在70岁以上，垂直半规管在80岁以上。此外，仅在右眼记录中，向右脉冲的水平VOR增益高于向左脉冲，但垂直半规管根据脉冲方向的增益无差异。
2b。《喉镜》，2018年，第128卷：E228-E233。
