Abstract
The objectives of the study were to demonstrate hearing status in newborns at first screening by Transient Evoked Otoacoustic Emissions and to find out the relationship between abnormal hearing screening and known risk factors. This study was conducted in the department of neonatology of Bangabandhu Sheikh Mujib Medical University in collaboration with department of otolaryngology and department of obstetrics and gynaecology. This prospective observational study included a cohort of 168 neonates from Neonatal Intensive Care Unit and neonatal Nursery (Minimal care unit). All were screened for hearing impairment using Transient Evoked Otoacoustic Emissions in out-patient department of otolaryngology by a trained audiologist before discharge from hospital. Risk factors analysed were according to the criteria of American Academy of Pediatrics. Of the total neonates screened, Refer rate was 32.7% irrespective of presence or absence of risk factors. Small for gestational age, in-utero infections, ototoxic medications, birth weight < 1500, sepsis/meningitis, hyperbilirubinemia were found to be significant risk factors (p < 0.0001). It can be recommended that hearing screening should be universally done for all newborns.
Highlights
Congenital or perinatally acquired hearing disorders affects 1 to 2 of 1000 newborns[1,2,3]
A total of 168 newborns including 116 from NICU and 52 from neonatal nursery ( MCU) underwent hearing screening by Transient Evoked Otoacoustic Emissions (TEOAE) before discharge from hospital
Abnormal hearing screening is common in newborns with or without risk factors
Summary
Congenital or perinatally acquired hearing disorders affects 1 to 2 of 1000 newborns[1,2,3]. World Health Organisation (WHO) estimated that of the 78 million people suspected to have disabling hearing impairment in the developing world, 8 million were children under the age of 18 years[8]. From these reports, it was difficult to determine what proportion was congenital, of earlyonset or acquired as the study population was predominantly over the age of 2 years. The American Academy of Pediatrics, has recommended that hearing loss in infants be identified, and when possible be treated, prior to 6 months of age
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