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KMID : 0352119980140030273
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Journal of Kyung Hee University
1998 Volume.14 No. 3 p.273 ~ p.281
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A CLINICAL STUDY ON THE NORMAL RANGES OF THE MONOTHERMAL CALORIC TEST
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Abstract
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In 1970, Torok reported that patients with labyrinthine disease showed vestibular recruitment and that patients with retrolabyrinthine disease showed vestibular decruitment on the monothermal caloric test. The monothermal caloric screening test, when used appropriately, is know a sensitive and cost-effective adjuct to the vestibular test battery. The test is designed to identify subjects with normal orizontal semicircular calnal fuction. This screening test is to decrease subject discomfort and to permit time to conduc adjunctive evaluations. It allows determination of vestibular recruitment and decruitmetn, variables which may be help in discrimination of peripheral from central vestibular lesions.
Following Torok´s procedure exactly, the monothermal caloric test was administered to 60 normal individuals and the following results were obtained.
1) Reviewing the weak caloric test results in our case material of 60 normal subjects(120 ears), the culmination) frequency values were as low as 2 beats/10 seconds and as high as 32 beats/ 10 seconds at the peak of the reaction. The mean value was 14.12 with a standard deviation of 6.2
2) By examing of the results of the strong caloric irrigations, the scope of culmination frequencies is spread between 6 in one ear to 48. The mean value was 25.31 with a standard deviation of 7.8
3) The ratio value of culmination frequency was 1.98 with a standard deviation of 0.7 and we reported the normal ranges ; from 1.2 to 3.2
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