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Korean Journal of Otorhinolaryngology-Head and Neck Surgery > Volume 38(10); 1995 > Article
Korean Journal of Otorhinolaryngology-Head and Neck Surgery 1995;38(10): 1505-9.
Test-Retest Variability of Air Caloric Test in Normal Subjects
Seung-Chul Lee, MD, and Kyu-Sung Kim, MD
Department of Otolaryngology, College of Medicine, Inha University, Inchon, Korea
정상인에서 공기자극을 이용한 냉온자극검사의 검사간 변동성
이승철 · 김규성
인하대학교 의과대학 이비인후과학교실
ABSTRACT

The bithermal caloric test is an integral part of vestibular evaluation procedure. A major problem of caloric test using air as a stimulus medium is a variability of the response, because it is difficult to maintain the caloric stimulus constantly in repeated tests. We performed air caloric test(temperature : 24℃ and 48℃, air flow : 8L/min, duration : 60 second) repeatedly in 30 normal subjects having no otologic disease in order to evaluate the test-retest variability of air caloric response under our vestibular laboratroy condition. As a result, the mean value of unilateral weakness(UW), directional preponderance(DP), UW difference and DP difference between the tests were 17.0±13.6%, 10.4±7.7%, 8.1±5.4%, and 11.3±11.4% respectively. The results of the test were not influenced significantly by examiner, shape of ear canal, test interval, temperature or sex(p>0.05).

Keywords: Air caloric testTest-retest variability.
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