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《Chinese Archives of Otolaryngology-Head and Neck Surgery》 2008-08
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Preliminary study on prognosis factors of sudden hearing loss

ZHENG Yali LI Yongxin YU Zilong LIU Zhiying (Department of Otolaryngology Head and Neck Surgery,Beijing Tongren Hospital,Capital Medical University,Key Laboratory of Otolaryngology Head and Neck Surgery(Capital Medical University),Ministry of Education,Beijing,100730,China)  
OBJECTIVE To study the prognosis factors of sudden hearing loss.METHODS The clinical data of 249 out-patients of sudden hearing loss in Department of Otolaryngology Head and Neck Surgery of Beijing Tongren Hospital during 2003 to 2006 were retrospectively studied.The clinical data included age, initial diagnosis time,average hearing level of the first pure tone audiometry,type of audiogram,with or without vertigo and distort-product otoacoustic emissions (DPOAE).RESULTS The initial diagnosis time was 1 to 23 days after the onset of the diseases.The degree of hearing loss was evaluated according to the average hearing loss on frequency 250-4000Hz of the affected ear during the first diagnosis.There were 31(40 dB) cases with light deafness(12.45 %),80(41 to 70 dB) cases with moderate deafness(32.13 %),74(71 to 90 dB)cases with severe deafness(30.71%),and 64 (90 dB)cases with profound deafness(26.70 %). There were 72 cases with rising audiogram,81 cases with falling audiogram and 96 cases with flat audiogram. There were 96 cases with vertigo and 174 cases with tinnitus.Medicines used included vasodilators,steroid, neural nutritional agents,antiviral agents,energy mixture.Treatment period was 2 to 4 weeks.DPOAE was examined on 81 patients and was presented in 45 patients whose hearing level achieved normal after treatment.CONCLUSION The old and children patients and patients with vertigo have poor prognosis. The earlier the diagnosis,the better the hearing recovered.The rising audiogram and presentation of DPOAE indicate good prognosis.
【CateGory Index】: R764.43
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