Abstract
SINCE Lempert's1original article appeared, in July 1938, describing a one stage operation that gave surgical relief from deafness in a majority of cases, a new interest has been initiated in regard to the problem of otosclerosis. While most of the interest has been in the field of improving the results of the surgical technic, this new focus of attention on the disease has also uncovered many adjacent fields of study. Not the least of these is that of the relationship of pregnancy to this type of hearing loss. Nager's2observations are almost classic. He studied the histories of 1,146 cases of otosclerosis and many sections of temporal bones. Some of his findings were: Otosclerosis occurs in 10 per cent of all adults (histologically), but only a small portion of these show it symptomatically (poor hearing). The sex ratio of clinical otosclerosis is 1 male to 1.8 females. In

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