Search PubMed⌕ Search

Biomedical subjects

Bolajoko O Olusanya

Publications and source records attributed to Bolajoko O Olusanya.

13 recordsLinked to original sources
PubMed2006

Early hearing detection at immunization clinics in developing countries.

Early hearing detection has become a standard of neonatal care in most parts of the developed world. A growing number of developing countries are also currently exploring practical and culturally appropriate options for early hearing detection. Recent findings from on-going infant hearing screening programs in Nigeria and South Africa suggest that hearing screening programs are feasible if integrated into early childhood immunization programs in developing countries, especially where a significant number of births occur outside regular hospitals. A major challenge for a multi-stage screening protocol is how to minimize default rates for follow-up till diagnosis. However, this could be systematically addressed through improved parental education and appropriate support at various stages of the program.

Ambulatory Care Facilities↗
PubMed2006

Early detection of infant hearing loss: current experiences of health professionals in a developing country.

AIM AND METHODS: To investigate the experiences of doctors and nurses in infant hearing loss through an open-ended questionnaire in Lagos, Nigeria. RESULTS: Few respondents detected children with hearing loss within the first 6 mo of life. Parental concern was the most significant lead for doctors. Children suspected of hearing loss were often referred to ENT surgeons before objective hearing evaluation was conducted. CONCLUSION: Doctors and nurses should routinely seek objective infant hearing assessment for timely detection of permanent hearing loss.

Adult↗
PubMed2006

Adverse perinatal conditions in hearing-impaired children in a developing country.

Prevailing adverse perinatal conditions in developing countries have been associated with substantial mortality, but little evidence exists on their impact on permanent childhood disabilities and morbidity due to limitations in clinical investigations and medical records. This study aims to identify the possible association between parent-reported adverse perinatal conditions and permanent hearing loss, in order to establish service needs within current maternal and child health programmes. Structured questionnaires were administered to 363 parents of deaf children and 309 parents of normal-hearing children in an inner city area of Lagos, Nigeria. The parents were from all social classes. After a multivariable logistic regression analysis, birth asphyxia [OR 20.45; 95% CI 6.26, 66.85], difficult delivery [OR 8.09; 95% CI 2.76, 23.68], neonatal jaundice [OR 2.45; 95% CI 1.25, 4.79] and neonatal seizures [OR 2.30; 95% CI 1.09, 4.85] were associated with permanent hearing loss. Consanguineous marriages [OR 6.69; 95% CI 2.72, 16.46] and family history of deafness [OR 6.27; 95% CI 2.07, 18.97] also emerged as additional risk factors for permanent hearing loss. In addition, parents of children in state-owned schools for the deaf were significantly more likely to belong to higher social classes compared with normal-hearing children in mainstream state-owned schools. There is a need to incorporate services for the early detection of permanent hearing loss into current maternal and child healthcare programmes in developing countries.

Asphyxia Neonatorum↗
PubMed2004

Classification of childhood hearing impairment: implications for rehabilitation in developing countries.

AIM: To ascertain the rehabilitation needs of hearing impaired school entrants in developing countries based on current criteria for evaluating classification of childhood hearing impairment. METHODS: The profile of hearing impairment was examined in 50 children from eight randomly selected mainstream schools, based on findings from medical history, physical examination, otoscopy, pure-tone audiometry and tympanometry. The hearing thresholds across frequencies 0.25 - 8.0 kHz were analysed. The results were compared with conventional pure-tone averages (0.5 - 4.0 kHz) and WHO's criteria/threshold for disabling hearing impairment. RESULTS: Seventeen (94.4%) of the 18 children with conductive hearing loss based on conventional audiometry had high-frequency hearing loss. Similarly, 10 children (83.3%) of the 12 children with sensorineural hearing loss and 19 children (95%) of the 20 children with mixed hearing loss had high-frequency hearing loss. Forty-six hearing impaired children (92%): comprising those with permanent unilateral hearing loss > 30 dBHL, permanent hearing loss would have been missed by WHO criteria. CONCLUSIONS: Conventional school audiometry and WHO criteria for disabling hearing impairment are unlikely to detect the full spectrum of hearing disability in relation to activity limitation and participation restriction. The rehabilitation needs of the affected children cannot therefore be appropriately addressed by these approaches.

Acoustic Impedance Tests↗
PubMedDate not supplied

Physician education on infant hearing loss in a developing country.

BACKGROUND: Physicians often account for delays in detection and intervention for infant hearing loss for reasons that are rarely investigated, especially in developing countries. This study, therefore, explores current physician knowledge, attitude and training towards infant hearing loss in Nigeria. METHODS: Knowledge of documented risk factors, intervention options and attitude towards timely intervention for infant hearing loss was investigated through a questionnaire survey among 246 final year medical students and 161 physicians drawn from tertiary hospitals in Lagos. RESULTS: Medical students were significantly less knowledgeable than practising physicians about most risk factors for hearing loss except for craniofacial anomalies, intra-uterine infections and low birthweight. Few respondents (11.4-42.9%) were knowledgeable about the risk of low birthweight and maternal exposure to noise in pregnancy for infant hearing loss. Medical students were significantly more aware of early detection possibility (67.8% vs 38.9 %, p=0.000) and more knowledgeable about the use of hearing aids for babies (57.3% vs 50.3%). Most respondents had a fairly positive attitude towards parental concern and early detection while medical students were significantly more positive in their attitude towards infant hearing screening (86.6% vs 74.5%, p=0.002). CONCLUSIONS: Medical students demonstrated greater awareness of early detection possibilities for infant hearing loss than physicians, although they had limited knowledge of some important risk factors. Continuing physician education reflecting evidence-based trends in child healthcare is necessary, while medical education also needs to be updated periodically.

Clinical Competence↗