Outer hair cell functioning in infants with iron deficiency anemia

Sundagumaran H 1 , Seethapathy J 2

Affiliations 

  • 1 Speech Language Pathologist & Audiologist, Malaysia. Electronic address: hemawathiy.s@gmail.com
  • 2 Department of Speech, Language and Hearing Sciences, Sri Ramachandra Institute of Higher Education and Research (Deemed to Be University), Chennai, India, 600 116. Electronic address: jayashrees@sriramachandra.edu.in
Int J Pediatr Otorhinolaryngol, 2020 Nov;138:110393.
PMID: 33152983 DOI: 10.1016/j.ijporl.2020.110393

Abstract

BACKGROUND: Distortion product otoacoustic emissions (DPOAE) in infants with Iron Deficiency Anemia (IDA) helps in understanding the cochlear status especially the functioning of outer hair cells.

OBJECTIVES: To analyze the presence of DPOAE across frequencies and DP amplitude in infants with and without IDA.

METHOD: DPOAE were recorded on 40 infants with IDA and 40 infants without IDA in the age range of 6-24 months. Cubic DPOAEs (2f1-f2) were measured at six f2 frequencies (1500 Hz, 2000 Hz, 3000 Hz, 4500 Hz, 6000 Hz & 8000 Hz) with primary tone stimulus of intensity L1 equal to 65 dBSPL and L2 equal to 55 dBSPL. Immittance audiometry was performed using 226 Hz probe tone prior to DPOAE recording to ascertain normal middle ear functioning.

RESULTS: DPOAEs were present in all infants with and without IDA across frequencies tested. DP amplitude across the frequencies did not show any statistically significant difference (p 

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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