60 patients suffering from vertigo after head injury were studied by electronystagmography [E. N. G.] . Every patient underwent a detailed history, clinical examination and pure tone audiometry.
The vestibular function was studied by a test battery consisted of: calibration, spontaneous nystagmus test, gaze nystagmus test, positional nystagmus test, optokinetic nystagmus test and bithermal caloric test.36 normal subjects were evaluated by the same vestibular function tests to establish the ranges of normality. According to our results, the prevalence of vestibular dysfunction among patients after head injury is higher than that of normal subjects. The origin of vertigo after head injury is mainly due to central lesions [36.7%] , most probably involving the brainstem. The incidence of vertigo due to peripheral lesions is remarkably low [10 %] . The psychological factor may play an important role in the persistence of vertigo after head injury [45% normal E. N. G. findings]
Ahmed Hazem S. Soliman ,Ahmed Hazem S. Soliman ,Alaa Eldin M. Elfiky ,
Value of vestibular function tests in patients after head injuries,
New Egypt. J. Med. 2004;
197-203 Views : 0