Thus, 1000Hz probe tone in tympanometry serves a promising tool. A statistically significant difference was observed in all the sub-sections except similar values for ear canal volume.Ĭonclusion: Many changes occur in the ears of neonates like changes in bone density, mesenchymal loss which has an impact on the mechanical properties of the auditory canal and middle ear system.
Results: 1000 Hz probe tone surpassed the 226Hz probe tone in testing the neonates using tympanometry. Sampled paired t test was used to carry out statistical analysis. Comparison was made for type of tympanogram, ear canal volume, compensated static peak acoustic admittance and tympanometric peak pressure. Intensity of probe tone was adjusted at 85 dB SPL. Pressure ranging from + 200 to -400 daPa and a pressure change rate of 600/200 daPa per second was used for testing. Hearing screening with comparison of 226Hz and 1000Hz probe tone in tympanometry was carried out using a comparative study design. Method: An inclusion - exclusion criteria was applied in selection of 60 neonates (1-17days). Thus, aim of the study was to compare the use of probe tones (226Hz and 1000Hz probe tone) in tympanometry while testing the neonates for hearing before getting discharged from hospital setup. It is necessary to test the hearing using accurate test procedures. Early identification and rehabilitation can benefit the children. Objective: Impairment to hearing during childhood may lead to delay in the speech and language skills, making the communication process more difficult.
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