CLINICAL STUDY ON VESTIBULAR ASYMMETRY OF VERTIGO BY CUPULOMETRY

Abstract

The author applied cupulometry and Hallpike's caloric Test to 1100 cases of vertigo. The results were as follows:
(1) Most of The cases with vertigo showed vestibular asymmetry.
(2) Vestibular asymmetry could be classified into two types on cupulogram, namely. Parallel type and crossing type,
(3) The focus of Vertigo was determined in 183cases by various clinical examinations and operations. a) Labyrinth organ (119 cases) i) meniere's syndrome (Typical) 63 cases ii) apoplectic meniere's disease 43 _??_ iii) labyrinth syphilis 6 _??_ iv) congenital atresia of the ear 3 _??_ v) Herpes zoster of the ear 4 _??_ b) acoustic nerve (17 cases) i) Tumor 16 cases ii) Trauma 1 _??_ c) Ventricular Ependymoma 5 _??_ d) cerebellar tumor 12 _??_ e) brain stem tumor 18 _??_ f) Temporal lobe tumor 7 _??_ g) Frontal lobe tumor 5 _??_
(4) most cases of Parallel type showed directional preponderance in Hallpikes caloric test. This type was seen in vertigo of peripheral and also central origin.
(5) Directional preponderance of peripheral origin decreased by the treatment, but that of central origin did not decrease.
(6) most cases of crossing type on cupulogram showed canal parese in Hallpikes caloric test and always had vertigo of peripheral origin. This type showed no change by the treatment.