Evaluation of the Treatment for Sudden Hearing Loss -Analysis with the Quantification Theory of the First Type-

Abstract

There are two problems in evaluating treatments for sudden hearing loss: one is that many concomitant therapies are conducted; the other is that the disease tends toward spontaneous cure. From these considerations, the quantification theory of the first type by Hayashi was used in the present analysis. The prognosis in sudden hearing loss was found to be closely related to the type of audiogram and level of hearing at the first clinical examination, duration of disease before the first examination and age. Among many therapies, administration of prostaglandin E₁ (PGE₁)and vasodilators had favorable effects on prognosis. Therefore, that more detailed clinical examination of PGE₁ as a remedy for sudden hearing loss is necessary.