Analysis of Auditory Function before and after a Single Session of Hemodialysis in Patients with Chronic Kidney Disease.

Introduction  Hearing is a complex process that involves mechanical, chemical, and neurophysiological components. Changes in hearing can be caused by congenital or acquired etiological factors. Chronic kidney disease (CKD) is one of the causes of hearing loss. Objective  To compare auditory findings before and after a single session of hemodialysis in patients with chronic kidney disease. Methods  A clinical cross-sectional research was conducted with a sample of 23 individuals between 24 to 57 years of age with a diagnosis of CKD undergoing hemodialysis. Distortion product otoacoustic emission (DPOAE) and transient otoacoustic emission (TOAE) tests were performed before and after a session of hemodialysis. Results  The DPOAE test revealed that 26% of the participants had failure in both ears prior to dialysis and 30.4% had failure after dialysis. Comparing the DPOAE and TOAE tests before and after hemodialysis, a slight decrease was found in patients with "fail" results from the predialysis test to the postdialysis test, but the difference did not achieve statistical significance. Conclusions  No significant hearing changes assessed through otoacoustic emissions occurred after a single session of hemodialysis in the sample analyzed.