Tabriz University of Medical Sciences Medical Journal of Tabriz University of Medical Sciences 2783-2031 32 5 2011 01 20 Prevalence of Late Sensorineural Hearing Loss in Children with History of Sever Hyperbillirubinemia 75 79 EN Hamed Mohammadi Ghahhari Shahin Abdollahi Fakhim Abdol Ahad Amir Shaghaghi Alireza Lotfi Seyed Vahid Musavi Panah Journal Article 2011 01 22 Background and Objectives: Sever neonatal hyperbilirubinemia, is a major risk factor for auditory neuropathy and hearing lost. Here we studied the prevalence of hearing loss in a group of child who had a history of hyperbilirubinemia. Materials and Methods: In this study, we evaluated the rate and severity of hearing lost in a group of children who had a history of severs neonatal Hyperbilirubinemia. The results were compared with a matched group of healthy neonates, without a history of neonatal Hyperbilirubinemia. Levels of hearing lost were evaluated with Auditory Brain stem Response (ABR). Results: In this study we entered 102 child (M/F=58/44, mean age=24.5±8.9 months) with history of Hyperbilirubinemia (35.30 ± 5.02 mg/dl). Our control group consisted of 100 healthy child (M/F=61/39, mean age=23.6±8.61 months). Abnormal brain auditory response was detected in 23 patients in case group. It was mild, moderate and sever in seven (%6.9), 8 (%7.8) and 8 (7.8%) child succeedingly. Non of individuals in control group had abnormal ABR result and hearing lost. Conclusion: It is recommended to evaluate hearing state in child with history of neonatal hyperbilirubinemia.