Hearing screening and middle ear measures in American Indian infants and toddlers

Lisa L Hunter1, Cynthia S Davey, Allison Kohtz

  • 1University of Utah, Department of Communication Sciences and Disorders, 390 South, 1530 East, 1201 BEHS, Salt Lake City, UT 84112, USA. lisa.hunter@hsc.utah.edu

Insights

American Indian infants experience high rates of hearing screening failures, primarily due to otitis media (OM). Otoacoustic emissions (OAE) screening is valuable but limited in older infants, necessitating behavioral assessments for recurrent OM.

Area of Science:

  • Pediatrics
  • Audiology
  • Public Health

Background:

  • American Indian children have a three-fold higher incidence of otitis media (OM) than the general population.
  • Prospective cohort studies on otitis media with effusion (OME) and hearing loss in American Indian infants are lacking.
  • This study addresses the need for data on OME, hearing loss, and hearing screening in this high-risk population.

Purpose of the Study:

  • To report otoacoustic emissions (OAE) hearing screening results in relation to otitis media diagnoses in American Indian infants.
  • To assess the risk for recurrent hearing screening failure and OME in this population up to age 2 years.
  • To evaluate the utility of OAE screening in identifying hearing issues related to OME.

Main Methods:

  • A prospective cohort of 421 American Indian infants was enrolled at birth and followed until age 2.
  • Infants underwent regular assessments including pneumatic otoscopy, distortion product otoacoustic emissions (DPOAE), and tympanometry.
  • Procedures were conducted by nurses trained and validated in all assessment techniques.

Main Results:

  • Newborn hearing screening failure rates were 23.5%, increasing to 29.9% between 2-5 months.
  • Technical failures due to noise were frequent in infants aged 6-24 months, complicating interpretation.
  • OAE test results showed a significant association with OM diagnosis, strengthening with age, particularly after 6 months.

Conclusions:

  • High hearing screening failure rates in early infancy were significantly associated with high otitis media rates.
  • Sensorineural hearing loss was rare; most failures were linked to middle ear issues or temporary problems.
  • OAE screening is valuable but limited in infants over 6 months due to noise; behavioral assessment is recommended for persistent OME.
Abstract

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