The pre- and postoperative ENG findings in clinical otosclerosis and the late hearing results.
125 patients suffering from otosclerosis underwent oto-neurological investigations preoperatively and again daily from the second to sixth day postoperatively. An abnormal ENG in the form of a spontaneous or positional nystagmus, directional preponderance or a diminished caloric reaction could be found preoperatively in 30% of the patients. No statistically significant difference between patients with or without abnormal ENG findings could be shown in the late postoperative hearing results of 3 years in a series of different types of operations. Nearly half of the patients had postoperative nystagmus. On the second day nystagmus beat towards the operated ear in 22.3% of the patients. On the sixth day there was nystagmus only in one-third of the patients and it then beat towards towards the operated ear in only 12.1% of the patients and away from the operated ear in 12.6%. No statistically significant correlation could be found between the nystagmus findings and the late hearing results after 3 years' observation in this series of different types of operation.
D000293:Adolescent; D000328:Adult; D003638:Deafness / Q000209:etiology; D004584:Electronystagmography; D005260:Female; D005500:Follow-Up Studies; D006309:Hearing; D006801:Humans; D008297:Male; D008875:Middle Aged; D010040:Otosclerosis / Q000503:physiopathology* / Q000601:surgery; D011183:Postoperative Complications; D013201:Stapes Surgery; D014722:Vestibule, Labyrinth / Q000503:physiopathology*