In the post-lingual hearing disability, the benefits have already been demonstrated due to the effectiveness of the CI, in adults with delayed auditory deficiency .
The effects of postural control were studied in post-lingual, deaf patients users of CI.
It was evaluated sequentially the balance pre and after CI unilateral in patients with post-lingual deafness over a year, by means of the vestibular evaluation (caloric and rotatory chair and Dynamic Posturo-graphy (CDP) and questionnaire on dizziness, applied preoperatively, 60, 120, 180 days and one year after the CI surgery.
Commenting on the implant's benefits, Dr Ahmad Munzer Alwaa, head of the Ear, Nose and Throat (ENT) Department at UHS, said: "The device can be implanted in adults with profound 'post-lingual
' hearing loss and also in 'pre-lingual' deaf babies, before the age of five years - meaning those who are born deaf and have not developed the ability to speak."
The hearing impairment presented in this stage, prior to exposure to language, is denominated as pre-lingual; while that presented after having heard and even having developed language is denominated as post-lingual.
Bacterial meningitis is another one of the frequent causes of sensorineural hearing loss, embracing 60-90% of post-lingual deafness (11).