Evaluation of Sensory Neural Hearing Loss in Hypothyroid Children At Tertiary Care Centre
Keywords:Hypothyroidism; Pure Tone Audiometry; Sensory Neural Hearing Loss(SNHL), ABR(Auditory Brain Response ), Distortion Product Otaacoustic Emission(DPOE), Transitory Evoked Hota Acoustic Emission (TEOAE), Signal to Noise Ratio(SNR)
Aim : To evaluate sensory neural hearing loss in hypothyroid children.Material and methods:We undertook this prospective observational study which includes patients presented with hypothyroidism to the department of ENT and Paediatrics in Mahaveer Institute of Medical Sciences and Research Centre. All children were planned for hearing evaluation during period of June 2020 to November 2021, total 32 patients of age group 1 to 18 years were taken for the study.Results: All subject showed type A graph in impedance audiometry and elevated acoustic reflex threshold in ipsilateral and contralateral ear as compared to control group. TEOAEs in otoacoustic emission showed decreased SNR as compared to control group. High significance difference was found for absolute latency of wave I and significant for wave III and V as compared to control group.Conclusion: The severity and prevalence of hearing loss is more if duration of hypothyroidism is more and if delay in starting treatment in hypothyroid child.SNHL is bilateral and mostly mild in early stage.
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Copyright (c) 2022 Rakesh Maran, Ankush Jain, Garima Namdev, Mritunjay Shringirishi
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