Measuring middle ear admittance in newborns using 1000 Hz tympanometry: a comparison of methodologies.

The present study aimed to compare three measures to estimate middle ear admittance in neonates using 1000 Hz tympanometry. Data were obtained from 36 full-term newborns, aged between 24 and 123 hours, who passed a transient evoked otoacoustic emissions test and assessed using a Madsen Otoflex impedance meter. The results showed that the mean middle ear admittances obtained by compensating for the susceptance and conductance components at a pressure of 200 daPa and -400 daPa (Y(CC200) = 1.00 mmho and Y(CC-400) = 1.24 mmho, respectively) were significantly greater than that using the traditional baseline compensation method (Y(BC) = 0.65 mmho). Although Y(CC-400) has attained the highest mean value, it has the lowest test-retest reliability. Hence, the component compensation approach compensated at 200 daPa holds promise as an alternative method for estimating middle ear admittance in neonates. Further research to evaluate its test performance using clinical decision theory is required to determine its clinical significance.

[1]  Lauren Calandruccio,et al.  Normative multifrequency tympanometry in infants and toddlers. , 2006, Journal of the American Academy of Audiology.

[2]  M. Baldwin Choice of probe tone and classification of trace patterns in tympanometry undertaken in early infancy , 2006, International journal of audiology.

[3]  R. Margolis,et al.  Tympanometry in newborn infants--1 kHz norms. , 2003, Journal of the American Academy of Audiology.

[4]  J. Kei,et al.  High-frequency (1000 Hz) tympanometry in normal neonates. , 2003, Journal of the American Academy of Audiology.

[5]  D. McCaslin Journal of the American Academy of Audiology , 2003 .

[6]  S J Norton,et al.  Identification of Neonatal Hearing Impairment: Transient Evoked Otoacoustic Emissions during the Perinatal Period , 2000, Ear and hearing.

[7]  Welfare Agencies,et al.  Year 2000 Position Statement: Principles and Guidelines for Early Hearing Detection and Intervention Programs , 2000, Pediatrics.

[8]  Welfare Agencies,et al.  Year 2000 Position Statement: Principles and Guidelines for Early Hearing Detection and Intervention Programs. , 2000, American journal of audiology.

[9]  J. Hirsch,et al.  Hearing Screening in the Newborn Intensive Care Nursery: Comparison of Methods , 1999, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.

[10]  Joseph Kei,et al.  Effects of Background Noise on Click‐Evoked Otoacoustic Emissions , 1998, Ear and hearing.

[11]  S. Purdy,et al.  High frequency probe tone tympanometry in infants with middle ear effusion , 1995 .

[12]  B. Vohr,et al.  Factors Affecting the Interpretation of Transient Evoked Otoacoustic Emission Results in Neonatal Hearing Screening , 1993 .

[13]  R. Margolis,et al.  Developmental changes in multifrequency tympanograms. , 1991, Audiology : official organ of the International Society of Audiology.

[14]  C. Marchant,et al.  Objective diagnosis of otitis media in early infancy by tympanometry and ipsilateral acoustic reflex thresholds. , 1986, The Journal of pediatrics.

[15]  D. Lilly,et al.  An evaluation of tympanometric estimates of ear canal volume. , 1981, Journal of speech and hearing research.

[16]  W M Rabinowitz,et al.  Measurement of the acoustic input immittance of the human ear. , 1981, The Journal of the Acoustical Society of America.

[17]  W. Creten,et al.  On the asymmetry of susceptance tympanograms. , 1979, Scandinavian audiology.

[18]  R. Margolis,et al.  Tympanometric asymmetry. , 1977, Journal of speech and hearing research.

[19]  K. Thomsen,et al.  The Influence of Pressure Variations on the Impedance of the Human Ear Drum , 1959, The Journal of Laryngology & Otology.