Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-19T08:32:42.418Z Has data issue: false hasContentIssue false

The caloric response in the contralateral ear in acoustic neuroma

Published online by Cambridge University Press:  29 June 2007

M. V. Kirtane*
Affiliation:
Bombay, India
S. N. Merchant
Affiliation:
Bombay, India
S. B. Medikeri
Affiliation:
Bombay, India
*
Dr. M. V. Kirtane, Gokul, Tejpal Road, Bombay 400007, India.

Abstract

The caloric test response from the unaffected ear in a case of acoustic neuroma may be normal, hypoactive or hyperactive; each has a different pathophysiological connotation: a normal response is the anticipated finding; a hyperactive contralateral response is due to the presence of a large neuroma with brainstem compression; and a hypoactive response may result from several factors, such as lack of mental alertness during the test, drugs like barbiturates, raised intracranial tension, or the presence of bilateral neuromas.

Type
Research Article
Copyright
Copyright © JLO (1984) Limited 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Claussen, C. F. and Schlachta, I. V. (1972) Butterfly Chart for caloric nystagmus evaluation. Archives of Otolaryngology, 96: 371375.CrossRefGoogle ScholarPubMed
Claussen, C. F. and DeSa, J. V. (1978) In Clinical Study of Human Equilibrium by Electronystagmography and Allied Tests, Popular Prakashan, Bombay, p. 314.Google Scholar
Dix, M. R. and Hallpike, C. S. (1960) Discussion on acoustic neuroma: The otoneurological diagnosis of tumours of the eighth nerve. The Laryngoscope, 70: 105122.CrossRefGoogle Scholar
Kirtane, M. V. (1979) Standardization in electronystagmography. Indian Journal of Otolaryngology, 31: 126132.CrossRefGoogle Scholar
Kirtane, M. V. (1982) In Electronystagmography—a systematic approach. Kirtane, M. V., Bombay, pp. 5495.Google Scholar
Kirtane, M. V., Medikeri, S. B., Merchant, S. N., Desai, M. and Bhange, A. (1984) Electronystagmography findings in acoustic neuromas. Accepted for publication in the Journal of Postgraduate Medicine.Google Scholar
Linthicum, F. H. Jr. and Churchill, D. (1968) Vestibular test results in acoustic tumour cases. Archives of Otolaryngology, 88: 604607.CrossRefGoogle Scholar
Linthicum, F. H. Jr, Khalessi, M. H. and Churchill, D. (1979) Electronystagmographic caloric bithermal vestibular test: Results in acoustic tumour cases. In Acoustic Tumours (House, W. F. and Luetje, C. H.eds.), 1: 237240, University Park Press, Balitmore.Google Scholar
Shiffman, F., Dancer, J., Rothballer, A. B., Berrett, A. and Baum, S. (1973) The diagnosis and evaluation of acoustic neuromas. In The Otolaryngologic Clinics of North America, Symposium on Vertigo (Wolfson, R. J. ed), 6: 190198, W. B. Saunders Company, Philadelphia.Google Scholar