American journal of audiology · 2015
The dissociation of video head impulse test (vHIT) and bithermal caloric test results provide topological localization of vestibular system impairment in patients with "definite" Ménière's disease.
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McCaslin Devin L, Rivas Alejandro, Jacobson Gary P, Bennett Marc L
Аннотация
PURPOSE: We report 3 patients with Ménière's disease and describe how the combination of audiometry, video head impulse testing, and caloric results may prove helpful in the diagnosis of Ménière's disease.
METHOD: Three patients with "definite" Ménière's disease were evaluated in a tertiary care medical center. Each patient underwent videonystagmography, horizontal canal video head impulse testing, and audiometry.
RESULTS: All 3 patients demonstrated moderate, flat, sensorineural hearing losses; significant caloric asymmetries; and bilaterally normal video head impulse testing. This pattern of findings suggests differential preservation of high-frequency function (video head impulse testing) with impairment of low-frequency function (unilaterally abnormal caloric test results) in these patients.
CONCLUSION: Ipsilesional abnormal caloric testing in the presence of normal video head impulse testing is a pattern of findings observed in a cohort of patients who have "definite" Ménière's disease.
METHOD: Three patients with "definite" Ménière's disease were evaluated in a tertiary care medical center. Each patient underwent videonystagmography, horizontal canal video head impulse testing, and audiometry.
RESULTS: All 3 patients demonstrated moderate, flat, sensorineural hearing losses; significant caloric asymmetries; and bilaterally normal video head impulse testing. This pattern of findings suggests differential preservation of high-frequency function (video head impulse testing) with impairment of low-frequency function (unilaterally abnormal caloric test results) in these patients.
CONCLUSION: Ipsilesional abnormal caloric testing in the presence of normal video head impulse testing is a pattern of findings observed in a cohort of patients who have "definite" Ménière's disease.