gms | German Medical Science

Introduction: Issues of origin and development of hearing loss and deafness in childhood (neonatal) period or after the age of emerging infectious diseases or transferred transplant infections from an infected mother is important point for not only otolaryngologists, but also and pediatricians, neurologists, speech therapists and other professionals. These infections may be acute respiratory viral infection, cytomegalovirus, measles virus, mumps, rubella, herpes simplex virus, toxoplasmosis etc. Hearing loss or deafness is an urgent problem, since at present there is a marked increase of this pathology.

The Aim: of the study was: to investigate the influence of infection to the auditory system and learn indicators of otoacoustic emissions (OAE) and auditory brainstem response evoked potentials (ABR).

Material and methods: We examined 86 children at the out-patient Otolaryngology department of Tashkent Medical Academy. For all children were provided OAE and ABR. According to examinations, in 15 children were detected hearing impairment and all of them were passed some kind of infectious diseases in the past history. More often it was measles, rubella and herpes simplex virus.

Results: In all examined children OAE tests were negative. ABR recording showed that: in 72% cases V peak of ABR was registered at about 40 dB stimulating signal levels. The rest 27,7% cases that V peak of ABR was never registered till maximal level of signal –70dB. Also in those patients ABR dates identified prolongation of latent distances of the peaks at 40 dB and higher stimulation levels.

Conclusion: Thus, examination results of auditory system of hearing impaired children who passed infectious-viral diseases showed the existence of signs of peripheral damage of auditory system.

Unterstützt durch: Tashkent Medical Academy, Department of Otolaryngology

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