Normative data and clinical practice of sinusoidal harmonic acceleration test
10.3760/cma.j.issn.1673-0860.2010.01.004
- VernacularTitle:正弦谐波加速试验的正常参考值及初步临床应用
- Author:
Wu-Qing WANG
1
;
Fang-Lu CHI
;
Li-Wen WU
;
Hua-Zeng LU
Author Information
1. 复旦大学附属眼耳鼻喉科医院
- Keywords:
Vestibular function tests;
Labyrinth diseases;
Reference values;
Nystagmus,pathologic
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2010;45(1):14-18
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish the normative data of sinusoidal harmonic acceleration test (SHAT) and evaluate the ralue of clinical application. Methods One hundred and twenty normal persons,21 Meniere's disease patients, 2 bilateral vestibular peripheral lesion patients, 15 unilateral vestibular peripheral lesion patients and 10 central lesion patients were tested with SHAT. Results The calibration time was longer in the older persons. The phase decreased with the frequency, and the gain increased with the frequency, but the reliability of the re-test of the phase was better in the lower frequency. The results of the 7 Meniere's disease patients without symptoms were normal, 14 patients post-attack revealed abnormal,11 had phase abnormal, 3 had gain decrease,10 revealed asymmetry and spontaneous nystagmus simultaneously, 8 patients had two parameters abnormal. The unilateral vestibular peripheral lesion patients showed 73%(11/15) phase abnormal, 67% (10/15) gain decrease and 40% (6/15) asymmetry, while 5/6 asymmetry patients had spontaneous nystagmus. The gain of the bilateral vestibular peripheral lesion patients showed severe decrease. The abnormal rate in central lesion patients were 70% (7/10) in phase,20% (2/10) in gain and 40% (4/10) in asymmetry, but the patients with asymmetry had no spontaneous nystagmus. Conclusions The normal range of the phase, gain and asymmetry of SHAT is in anarrow bandwidth. The phase is the most important abnormal sign.
