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Neonatal hearing screening in a neonatal intensive care unit using distortion product otoacoustic emissions

Korean Journal of Pediatrics 2006;49(5):507-512.
Published online May 15, 2006.
Neonatal hearing screening in a neonatal intensive care unit using distortion product otoacoustic emissions
Do Young Kim1, Sung Shin Kim1, Chang Hwi Kim1, Shi Chan Kim2
1Department of Pediatrics, College of Medicine, Soonchunhyang University, Bucheon Hospital, Seoul, Ko
2Department of Otolaryngology, College of Medicine, Soonchunhyang University, Bucheon Hospital, Seoul
변조 이음향방사(DPOAE)를 이용한 고위험군 신생아 청각 선별검사
김도영1, 김성신1, 김창휘1, 김시찬2
1순천향대학교 의과대학 부천병원
2순천향대학교 의과대학 부천병원 이비인후과
Abstract
Purpose
: Early detection and intervention of hearing impairment is believed to improve speech and language development and behavior of children. The aim of this preliminary study was to determine the prevalence of hearing impairments, and to identify the association of risk factors relating to refer response in high risk neonates who were screened using distortion product otoacoustic emissions (DPOAE).
Methods
: The subjects included 871 neonates who were admitted to the neonatal intensive care unit of the Pediatric Department in Soonchunhyang University Bucheon Hospital from May, 2001 to December, 2004. They were screened using DPOAE. Based on DPOAE, we divided the neonates in two groups : ‘Pass’ and ‘Refer’. The differences in risk factors between the pass group and the refer group were analyzed.
Results
: The incidence of the refer group was 12.1 percent(106 out of 871). The bilateral refer rate was 5.4 percent(47 out of 871). And the unilateral refer rate was 6.7 percent(59 out of 871). Gender, birth place, family history of hearing loss, small/large for gestational age, obstetrical factor, hyperbilirubinemia and use of gentamicin were not statistically related to the refer rate. Statistically related to refer rate were birth weight, resuscitated neonates, Apgar score, craniofacial anomaly, mechanical ventilator application, sepsis, using of vancomycin(P<0.05). The prevalence of hearing impairment (≥60 dB) in this study was 2 percent(18 out of 871).
Conclusion
: This study showed a higher prevalence of hearing impairment in high-risk neonates. Thus neonatal hearing screening should be carried out in high-risk neonates.
Key Words: Neonatal hearing screening , Distortion product otoacoustic emissions , Intensive care neonate


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