1978 Volume 21 Issue 4 Pages 213-217
Statistical observations on hearing and equilibrium disturbance were made in 245 patients who had suffered from head and neck injuries but no temporal bone fractures, and complained of vertigo. The results were as follows;
1. Percentage of the cases of objective hearing loss on audiograms (58%) was higher than those complained of subjective hearing loss (31%).
2. Bilateral and contralateral hearing losses to the injured side were much more frequently observed than ipsilateral ones.
3. More than half of the cases showed a hearing loss of high tones on audiogram. C5-dip and flat pattern were also observed in the rest of the cases.
4. In the cases with an objective hearing loss, abnormal findings in equilibrium tests were more frequently found than in the cases without hearing loss.
5. In the cases suspected of central disturbance in equilibrium examinations, severer hearing loss and higher percentage of bilateral hearing loss and high tone loss were observed than in that of peripheral disturbance.
