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Abstract
Evaluation of the dizzy patient is always challenging since present with a variety of symptoms involving more than one organ s’ - for every dizzy patient is ideal, but not always possible due to th test high ghbot and to theeaustrophobic experience of
some patients. Depending on ABR findings in selecting patiert needing MRI is a good alternative. However, sometimes ABR wavesdo not exist owing to severe degrees of SNHL. So, search of nystagmus remains to be the final decision-making step before proceeding to MRI.
This study tried to establish the videonystagmogiiphic findings in patients with dizziness of
definite retro-labyrinthine origin, the matter ih 1l consequently help to discriminate
patients who may possibly need further radiologicaL qa1 ton!
Twenty eight persons represented the control consisted of. sixty one patients complaining; labyrinthine in origin. The study group was causative pathology:
1. Vestibular schwannoma (10 cases)
2. Demyelination (10 cases)
3. Ischemic disease (11 cases)
4. Vestibular neuronitis (10 cases)
5. Miscellaneous pathologies (20 cases)
After complete neurootological examination was performed for each person in this stu.J9 following tests: spontaneous nystagmus test,:
test, positional test, positioning test (Dix-Hal performed regarding control group.
After qualitative study of the collected data, til and correlation coefficient factor (r). Analysis of the results showed that the mot s tets vestibular schwannc group were the tracking test (100%) and the O1K tes (100%), followed by the saccadic (90%). Furthermore, when the findings of the tliree oculoiuotor) tests were comprehem studied, it was found that at least two of these tests were abnormal in any vestibular schwan patient (100%) in our work. The caloric test revealed caloric weakness in 90% of cases. As it could identify central affection when the tumor reached 4cm in diameter (30% of cases). test presented the specific features of Brun ‘s iiystqgmus in 1/2 of the cases with tumor larg