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Chinese Journal of Blood Purification ›› 2003, Vol. 2 ›› Issue (4) : 180-182.

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Abstract

Objective To evaluate the state of hearing in the patients of chronic renal failure. Methods 59 cases of uremic patients tested with pure tone audiometry.They are male in 37 cases and female in 22, average ages 39±10 years. The course of uremia is (16±26)M, 45 cases in continure hemodialysis, 2 cases in peritonealdialysis, 11 cases in received drugs therapy. 20/59 cases have symptoms of tinnitus, decrease hearing in different degree, 3 cases have suddenly deafness, the other no symptoms,all of them have no history of ear disease. Results 34 cases (55 ears) appeared hearing loss in the audio-frequency and high-frequency, were 47% in total ears, all of them were sensorineural deafness. 33 ears had audio-frequency hearing loss, (0.5-2 khz)average hearing (37±18)dB, 45 ears had high-frequency hearing loss (4-8 khz), average hearing (44±16)dB, although the degree in high frequency is severer than in audiofrequency, but no different between them (P>0.05). 59 cases average hearing in audio frequency is (21±14) dB, in high-frequency (24±15)dB, 44 cases normal control, the average hearing in audio-frequency is (14±3)dB, and high-frequency (14±4)dB. There is a significant different between the average hearing in uremic patients and normal control (P<0.01). Conclusion The uremic patients have hearing loss either clinical or subclinical. The high-frequency hearing loss maybe early stage sign in uremic patients.