Tympanogram Findings in Hemodialysis Patients

Background: The aim of this study is to investigate whether changes in cerebrospinal fluid (CSF) pressure during the hemodialysis (HD) treatment are reflected on tympanometric measurements. Methods: The study was performed on 24 HD patients. The static compliance and absorbance values of the patients before and after HD were measured using a wideband tympanometry. The tympanogram tests were performed immediately before and at the end of the HD session. Results: The static compliance values of the patients after HD were significantly lower than those before HD. This decrease significantly correlated with the adequacy of dialysis determined by urea reduction rate and Kt/V. The absorbance values showed a decrease in the band 343 and 727 Hz, but no significant difference was found in other frequencies. The static admittance and absorbance values were influenced by the HD process. Discussion: This influence might be due to the increase in CSF pressure as a result of the removal of urea from blood during HD session. Address correspondence and reprint requests to Mahmut Tayyar Kalcioglu, Department of Otorhinolaryngology, Istanbul Medeniyet, University, Department of Otorhinolaryngology, Goztepe Training and Research Hospital, Dr. Erkin Street, 34730, Goztepe, Kadikoy, Istanbul, Turkey; E-mail: mtkalcioglu@hotmail.com Received 6 June, 2018 Accepted 20 July, 2018 This work was supported by unit of Scientific Investigation Projects of Istanbul Medeniyet University (project no: T-BAG-2016-811). The study presented in the 6th National Otology & Neurotology Congress, April 28 to May 1, 2018, Antalya, Turkey and 11th Balkan Congress of Otorhinolaryngology, June 1 to 3, 2018, Varna, Bulgaria (International). The authors report no conflicts of interest. © 2018 by Mutaz B. Habal, MD.

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