ENG in a woman with a history of dizziness who became nauseous and lightheaded while reading.A 54-year-old woman was referred to the office for an evaluation. Four years earlier, she had been examined by another physician for spells of dizziness, and she was told that she had a peripheral vestibular disorder peripheral vestibular disorder Neurology A hallucination of movement, either subjective or objective History Duration of an attack–eg, hrs v. days, frequency daily v. . She began taking meclizine meclizine /mec·li·zine/ (mek´li-zen) an antihistamine used as the hydrochloride salt as an antinauseant in motion sickness and to manage vertigo associated with disease affecting the vestibular system. and underwent vestibular rehabilitation therapy, and she improved dramatically. Some time later, she began wearing prescription prismatic eyeglasses. In time, she noticed that when she used these glasses to read papers or a computer screen, she became lightheaded and nauseous. These symptoms prevented her from performing her work as an executive secretary. She had no hearing loss, but tinnitus occurred equally in both ears when she attempted to focus her eyes. The tinnitus would last from a period of hours to days. Electronystagmography revealed nystagmus Nystagmus Definition Rhythmic, oscillating motions of the eyes are called nystagmus. The to-and-fro motion is generally involuntary. Vertical nystagmus occurs much less frequently than horizontal nystagmus and is often, but not necessarily, a sign of in the right lateral position, which worsened when the neck was turned to the right. The alternate binaural binaural /bi·nau·ral/ (bi-naw´r'l) pertaining to both ears. bin·au·ral adj. Having or relating to both ears. binaural pertaining to both ears. bithermal stimulus showed a reduced vestibular response (RVR) to the left of 10% and a directional preponderance to the right of 5%. The simultaneous binaural bithermal revealed a type 4 left-beating cool with a possible type 2 RVR to the left and with a mild right-beating response to the warm simultaneous stimulus. From Neurotologic Associates, P.C., New York City New York City: see New York, city. New York City City (pop., 2000: 8,008,278), southeastern New York, at the mouth of the Hudson River. The largest city in the U.S. . |
|
||||||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion