Abstract
We experienced six cases whose audiometry has been improved during their growth. They included 2 Down's syndrome infants,2 cleft palate infants and 2 patients without any complication. We believe that there is a high incidence of hearing loss in infants with various accompanying complications, such as Down's syndrome and cleft palate. Attention should be paid to hearing loss infants with complications. Possible causes of alteration of hearing impairment may include healing of exudative otitis media, elimination of mesenchymal tissue in the middle ear, and completion of myelinization around auditory nerve axon.
