THE STUDY OF CALORIC TEST RESULTS IN PATIENTS WITH VESTIBULAR LOSS
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Abstract
BACKGROUND: Dizziness are symptoms that patients frequency present at Otoneurology clinic and lead to a higher risk of accidents and handicap. Apart from history taking and physical examination, vestibular function test may be used to diagnose the patients with vestibular loss. There are many diagnostic testing, but still doesn’t know where the problems of peripheral vestibular loss (PVL) or central vestibular loss (CVL) come from leading to ambiguous diagnosis. The caloric test may help physician to be a differential lesion between patients with PVL and CVL.
OBJECTIVE: To study the result of caloric test in patients with vestibular loss for differentiating peripheral from central vestibular disorders
METHODS: This study was conducted as a prospective descriptive at vestibular clinic, Ear-Nose-Throat (ENT) department, Chiangrai Prachanukroh Hospital. Patients with dizziness were performed with the caloric test between January 2020 to August 2020. Data was collected for characteristic data analysis and descriptive statistics.
RESULTS: 40 cases were included. All of our subject was the patients with peripheral vestibular loss. The caloric test of these patients was mostly normal. Canal paresis result was normal 67.5%. Directional preponderance was normal 90%. And, fixation index was normal 100%.
CONCLUSSIONS AND DISCUSSIONS: All of our subject was the patients with peripheral vestibular loss and their caloric test results were mostly normal. This study could not be concluded that the caloric test used to differential lesion between patients with PVL and CVL. However, the caloric test should be complemented with other vestibular function tests for evaluating patients with PVL to increase accuracy and sensitivity identifying lesions of end-organs in the inner ears.
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