Comparison of tympanometry results for probe tones of 226 Hz and 1000 Hz in newborns.

Introduction: Impedance audiometry is a routine test for diagnosing hearing disorders in children. Typically, tympanometry uses a 220 or 226 Hz probe tone. However, using a 1000 Hz test tone is becoming increasingly popular, particularly in newborns, since it enables one to assess individual components of the ear's admittance.