Abstract
Among 95 patients with sudden sensorineural hearing loss who received inpatient treatment at our hospital within the 27-month period between October 2009 and December 2011, those in whom hearing loss was aggravated after diagnosis were compared with a control group. Hearing loss aggravation was defined as a decrease by 10 dB or more in the mean hearing threshold at 5 frequencies from 250 to 4,000 Hz or decrease of 15 dB or more in the hearing threshold at 2 consecutive frequencies. Hearing loss was aggravated after diagnosis in 22 (23.2%) of the 95 patients, showing a similar tendency to that previously reported. Although the grades of hearing loss in these patients were higher than those in 73 control group patients, according to the sudden hearing loss severity classification, their outcomes were favorable. The hearing loss aggravation group consisted of those with steroid-dependent hearing loss (6) and those who had undergone perilymphatic fistula repair (4), in addition to a large number of patients with idiopathic hearing loss, including suspicious perilymphatic fistula (10). When hearing loss becomes aggravated after the diagnosis of sudden sensorineural hearing loss, it may be important to determine the most appropriate approach in each case, such as a careful and gradual decrease in the adenocortical steroid dose and the consideration of perilymphatic fistula repair.
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