High frequency tympanometry (1000Hz) in young infants and its comparison with otoacoustic emissions, otomicroscopy and 226Hz tympanometry.

Introduction And Objective: In the first 6 months of life, 226Hz tympanometry is considered an ineffective procedure for the diagnosis of otitis media with effusion. With the introduction of universal hearing screening, the use of high frequency 1000Hz (1kHz) tympanometry has been recommended. To optimise the diagnosis of neonatal hearing loss, we present this comparison, from the clinical point of view, of the results of 226Hz and 1kHz tympanometry in infants.

[Results of applying a universal protocol for early detection of hypoacusia in newborn infants for 42 months].

Introduction And Objectives: We present the results from applying over a period of three and a half years a universal newborn hearing screening programme aimed at the early detection of hearing loss. Our goal has been to diagnose and treat all unilateral or bilateral permanent hearing losses > or =40 dB nHL.

Methods: The detection strategy consists of two screening phases with transient evoked otoacoustic emissions (TEOAE) and one diagnostic phase with auditory brainstem responses (ABR).