Korean Journal of Pediatrics 2006;49(8):845-850.
Published online August 15, 2006.
Incidence of hearing loss and importance of risk factors in the neonatal intensive care unit
Seung Hyun Kong, Jang Hee Kang, Kwang Su Hwang, Joong Pyo Kim, Hyeon Jung Lee, Hyeon Choi, Ji Sun Mok, Jung Young Kim
Department of Pediatrics, Good Moonhwa Hospital, Busan, Korea
신생아 중환자실에서 난청의 발생빈도 및 위험요소의 중요성
공승현, 강장희, 황광수, 김중표, 이현정, 최현, 목지선, 김정영
좋은문화병원 소아과
Correspondence: 
Ji Sun Mok, Email: nicedoc@paran.com
Abstract
Purpose
: To assess the incidence of neonatal hearing loss in a neonatal intensive care unit and the relative importance of risk factors for hearing imparement in a neonatal intensive care unit which the Joint Committee on Infant Hearing(JCIH) had recommended.
Methods
: One thousand, two hundred and one newborns admitted to the Good Moonhwa Intensive Care Unit from May 2003 to December 2005 were assesed using the automated auditory brainstem response(AABR). The screening was performed on those aged more than 36 weeks and weighing more than 2,200 g. We divided the infants into two groups, ‘pass’ and ‘refer’. The ‘refer’ group were retested one month later, and if classified as ‘refer’ during the retest, were referred to a hearing impairment clinic.
Results
: From the 1,201 neonates, 1,187(98.8 percent) passed the test and 14(1.2 percent) failed. 293(24.4 percent) of the 1,201 neonates had a risk factor for hearing impairment; 282(96.2 percent) passed the test and 11(3.8 percent) failed. The group with risk factors were shown to have a higher incidence of hearing loss(P<0.001). The neonates in the refer group were shown to have a higher incidence of ototoxic drugs(P<0.001), low birth weight(<1,500 g)(P<0.001) and craniofacial anomalies(P=0.007). On the other hand, there were no statistical differences between the pass and refer groups in congenital infection, hyperbilirubinemia, bacterial meningitis, low Apgar scores, prolonged mechanical ventilation and syndromes known to include hearing loss.
Conclusion
: In order to identify hearing-impaired infants within an appropriate period, neonatal hearing screening tests and identification of the risk factors for neonatal hearing loss are important.
Key Words: Neonatal hearing loss , Atomated auditory brainstem response


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