Etiology of deafness at the Yeditepe School for the deaf in Istanbul

Investigação etiológica da deficiência auditiva em neonatos identificados em um programa de triagem auditiva neonatal universal

“…The higher occurrence of deafness in male children observed in this study (70.6%) is in agreement with national and international literature, that shows that hearing impairment is more frequent among males when compared to females 13,14 . A great part of the newborns diagnosed with hearing impairment (70.6%) had at least one RIHL.…”

Nasopharyngeal aerobic bacterial flora and Staphylococcus aureus nasal carriage in deaf children

“…The reported incidence of SNHL after meningitis has varied from 3 to 40%, with most reports clustered in the 15 to 20% range [26]. Egeli et al identified that meningitis was the acquired etiological cause in 27.8% of deaf children [5]. Emele et al [25] reported that the closeness of the contact inreased the rate of carriage.…”

“…These infections let significant morbidity and mortality in children world wide, and also nasal carriage of S. aureus has been demonstrated to be a significant risk factor for nosocomial and community-acquired infections in a variety of populations [3,4]. On the other hand, in their study, Egeli et al [5] found that febrile convulsion and meningitis were the most common acquired causes in the etiology of deafness in children. Febrile seizures occur during both bacterial and viral infections and may occur more frequently in patients with illnesses that are accompanied by severe constitutional symptoms.…”

Causes of permanent childhood hearing impairment

“…[12][13][14][15]17 Two studies prospectively performed molecular diagnostic investigations, of which one also performed serologic testing for congenital infections. 11,14 In those studies the highest proportions of acquired hearing impairment and hereditary hearing impairment were determined (although one of them also classified children with a positive family history as hereditary). The number of children included in the studies of Fortnum 15,16 was outside the range of the number included in other studies.…”