In:
Revista da Sociedade Brasileira de Fonoaudiologia, FapUNIFESP (SciELO), Vol. 14, No. 1 ( 2009), p. 91-97
Abstract:
PURPOSE: To characterize caloric test results in benign paroxysmal positional vertigo patients, according to the damaged semicircular canal. METHODS: The data of 1033 patients submitted to Dix-Hallpike testing, positional nystagmus and electronystagmography were analyzed. Caloric test results were compared to the damaged semicircular canals and were submitted to statistical analysis. RESULTS: In cases with posterior canal damage, there was prevalence of normal responses compared to abnormal results (p 〈 0.0001); hypo activity was more prevalent than hyperactivity (p 〈 0.0001) and directional preponderance (p 〈 0.0001), and hyperactivity more prevalent than directional preponderance (p 〈 0.0001). In cases with lateral canal damage, normal responses were more prevalent than hypo activity (p 〈 0.0001) and hyperactivity (p 〈 0.0001); there was a tendency of prevalence of hypo activity over hyperactivity (p=0.0771), and directional preponderance was not observed. In cases with anterior canal damage, normal responses were more prevalent than hypo activity (p 〈 0.0001); hyperactivity and directional preponderance were not observed. CONCLUSION: In the caloric test of benign positional paroxysmal vertigo patients, normal responses, hypo activity, hyperactivity or directional preponderance of post-caloric nystagmus occur in decreasing order of prevalence when the posterior canal is damaged; normal responses are more prevalent than hypoactive or hyperactive caloric responses, and there is a tendency of prevalence of hypoactive over hyperactive caloric responses when the lateral canal is damaged; normal responses are more prevalent than hypoactive caloric responses when the anterior canal is damaged.
Type of Medium:
Online Resource
ISSN:
1516-8034
DOI:
10.1590/S1516-80342009000100015
Language:
Unknown
Publisher:
FapUNIFESP (SciELO)
Publication Date:
2009
detail.hit.zdb_id:
2564811-1
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