双侧冷热反应降低患者的正弦谐波加速试验  

Low Frequency Rotational Responses in Bilateral Caloric Weakness Patients

作　　者：殷善开[1] 孙连玉[1] 李冬梅[1] 张德军[1] 谷京成[1] 王锐[1] 

机构地区：[1]锦州医学院附属医院耳鼻咽喉科,解放军军医进修学院

出　　处：《中华耳鼻咽喉科杂志》1994年第5期274-277,共4页Chinese Journal of Otorhinolaryngology

摘　　要：对５０例冷热试验双侧慢相速度之和（ＳＳＶｓ）≤２０°／ｓ患者进行正弦谐波加速试验（ＳＨＡＴ），结果表明ＳＨＡＴ不仅能反映冷热反应减弱，且能反应病变程度。ＳＳＶｓ≤１０°／ｓ组相位值明显较ＳＳＶｓ＞１０°／ｓ组及健康对照组为高，而增益值明显较后二组为低。ＳＳＶｓ≤１０°／ｓ组ＳＨＡＴ损害较严重，ＳＳＶｓ＞１０°／ｓ组损害较轻或正常，说明冷热试验与ＳＨＡＴ有一致性，但用阳性率较高的０．０１及０．０２Ｈｚ频率测试仍有３０％的ＳＳＶｓ≤１０°／ｓ患者ＳＨＡＴ相位、增益值在正常范围，提示两种试验结果也可不一致，双侧冷热反应严重降低者不足以诊断前庭功能丧失。omparative analysis of low frequency(0.01～0. 64Hz) sinusoidal harmonic accelera-tion(SHA)responses of 50 patients with bilateral caloric weakness(summed slowphase velocities SSVs≤20°/s) revealed that SHA stimuli reflected not only the existense of bilateral caloric weaknessbut also the impairment degree. The phase values of the patients with SSVs≤10°/s were greater than that of the patients with SSVs>10°/s and the normals, and the gain values of the patients with SSVs≤10°/s were smaller than those with SSVs> 10°/s and the normals. The patients with SSVs≤ 10°/s showed more severe impairments than those with SSVs> 10°/s. However, even in the frequen-cies having higher impairment indentifing rate,such as 0. 01 and 0.02Hz,about 30 percent of the pa-tients with SSVs≤10°/s revealed rotational responses that were within normal limits.These findings indicated that even marked bilateral caloric reduction is in sufficient to diagnose vestibular loss.

关 键 词：眩晕 前庭功能检查 正弦谐波 

分 类 号：R764.330.4[医药卫生—耳鼻咽喉科]