title: [Evaluation of cochlear function in children with chronic renal failure].
abstract: In present study cochlear function was evaluate in young chronic renal failure (CRF) patients using distortion product otoacoustic emissions (DPOAEs).
  
  
  OBJECTIVE
  (a) objective assessment of cochlear function in CRF children, (b) establishing best parameters of ipsilateral stimulation in DPOAEs (DP-gram format) for clinical use. Hearing acuity was assessed in 19 CRF children and 18 healthy children. At first pure tone audiometry and tympanometry were evaluate. Only patients with normal middle ear condition and hearing threshold better than 30 dB HL were put forward further investigations. Objective assessment of cochlear function included DPOAEs using DP-gram format. Our results reviled significantly lower mean DPOAE amplitudes in CRF children when compare to healthy children, at all frequencies measured. Most optimal DP-gram parameters in clinical use seems to be level L1 and L2 equal respectively: 65 and 60 dB SPL; 63 and 55 dB SPL; 59 and 45 dB SPL.
authors.affiliation: Katedra i Oddział Kliniczny Laryngologii w Zabrzu, SLAM w Katowicach.
authors.forename: Agata
authors.initials: A
authors.lastname: Hajduk
authors.forename: Grazyna
authors.initials: G
authors.lastname: Lisowska
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Namysłowski
authors.forename: Krystyna
authors.initials: K
authors.lastname: Szprynger
authors.forename: Maria
authors.initials: M
authors.lastname: Szczepańska
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Widziszowska
mesh_terms: D000158:Acoustic Impedance Tests; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D016022:Case-Control Studies; D003051:Cochlea / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications* / Q000503:physiopathology; D008297:Male; D017084:Otoacoustic Emissions, Spontaneous