Sudden sensori-neural hearing loss treated by carbon dioxide and oxygen inhalation

Abstract
A small series of [human] cases of sudden sensori-neural deafness of cochlear origin was described in which treatment with the inhalation of a CO2-O2 mixture was carried out. It is difficult at present to define precisely the maximum time interval between the onset of deafness and the commencement of treatment if therapy is to be effective in restoring hearing loss. Apparently, attempts must be made to salvage hearing in all patients suffering from sudden sensori-neural deafness of cochlear origin. The treatment outlined has up to now shown no demonstrable morbidity.

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