Henry D F
School of Communicative Disorders, University of Wisconsin--Stevens Point, 54481, USA.
Am J Otol. 1999 Mar;20(2):220-2.
To determine normal caloric responses and test-retest correlations of caloric responses in a group of otologically normal persons using an open-loop caloric irrigation system.
An open-loop bithermal caloric irrigator was used to obtain maximum slow component speed caloric responses of healthy young persons with a repeat caloric test occurring- 1 week later.
The caloric examination took place in a university speech and hearing clinic.
Twenty healthy young adults (10 men and 10 women, ranging in age from 18 to 33 years) who reported no history of dizziness or hearing loss were recruited at a university. They had thresholds of 25 dB HL or better for frequencies 250 of 8000 Hz and had passed an examination performed by an otologist.
The mean unilateral weakness (UW) response was 1.73% with a standard deviation of 12.1%. Test retest correlations were 0.82 for UW and 0.80 to 0.90 for individual ear responses.
The results indicate that a minimum of a 25% UW should be present when identifying a significant UW. Also the test-retest correlations were considerably higher using an open-loop irrigator than those obtained using a closed-loop irrigation system in a previously reported study.
使用开环冷热灌注系统确定一组耳科正常人群的正常热量反应以及热量反应的重测相关性。
使用开环双侧冷热灌注器获取健康年轻人的最大慢相速度热量反应，并在1周后进行重复冷热测试。
冷热检查在大学言语和听力诊所进行。
在一所大学招募了20名健康的年轻成年人（10名男性和10名女性，年龄在18至33岁之间），他们报告无头晕或听力损失史。他们在250至8000赫兹频率下的听阈为25分贝听力级或更好，并且通过了耳科医生的检查。
平均单侧眼震减弱（UW）反应为1.73%，标准差为12.1%。UW的重测相关性为0.82，单耳反应的重测相关性为0.80至0.90。
结果表明，在确定显著的UW时，应至少存在25%的UW。此外，与先前报道的一项研究中使用闭环灌注系统相比，使用开环灌注器的重测相关性要高得多。
