摘要:

Idiopathic sudden hearing loss is an otologic emergency with an obscure cause. It is the acute onset of hearing loss of 30 dB in three contiguous frequencies, which may occur instaneously or progressively over several days. Suspect etiologies include viral infections, cochlear artery occlusion, rupture of the intracochlear membranes, and biochemical alterations in the metabolism maintaining the endocochlear membrane potentials. Histopathology of the temporal bone most commonly reveals atrophy of the organ of Corti and striae vascularis. Treatments proposed include close observation for spontaneous recovery, steroid therapy, and combination regimens of vasodilators, steroids, diuretics, and intravenous iodinated radiocontrast material. Prognosis and recovery are related to the audiometric pattern of the hearing loss and associated symptoms. The absence of vertigo at the clinical onset and low tone hearing loss are associated with better hearing recovery.

ISSN:0192-9763    

出版商:OVID    

年代:1980

数据来源: OVID

ISSN:0192-9763    

出版商:OVID    

年代:1980

数据来源: OVID

ISSN:0192-9763    

出版商:OVID    

年代:1980

数据来源: OVID