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Effects of primary arterial hypertension on cochlear function

Arzu Kirbac1, Bilgehan Boke2

  • 1Department of Audiology, Eskişehir Osmangazi University, Faculty of Health Sciences, Eskişehir, Turkey.

Acta Oto-Laryngologica
|December 17, 2020
PubMed

Insights

Hypertension (HT) is linked to poorer high-frequency hearing and reduced otoacoustic emission amplitudes. Early screening of auditory function is recommended for individuals with HT to detect potential hearing loss.

Area of Science:

  • Otolaryngology
  • Cardiology
  • Audiology

Background:

  • Hypertension (HT) is a prevalent chronic condition.
  • Existing research on the link between HT and hearing impairment shows conflicting results.
  • A clear consensus on HT's impact on auditory function is lacking.

Purpose of the Study:

  • To evaluate and compare cochlear function in individuals with and without primary hypertension.
  • To investigate potential differences in hearing thresholds and otoacoustic emission responses between hypertensive and normotensive groups.

Main Methods:

  • The study included 34 patients with primary HT and 17 healthy controls.
  • Cochlear function was assessed using conventional and ultra-high frequency audiometry (0.125-16 kHz).
  • Transient evoked otoacoustic emissions (TEOAE) and distortion product otoacoustic emissions (DPOAE) were measured.

Main Results:

  • Hypertensive patients showed significantly poorer hearing thresholds at ultra-high frequencies (8-16 kHz) compared to controls.
  • No significant differences were observed in conventional hearing thresholds (0.125-8 kHz).
  • TEOAE and DPOAE amplitudes were significantly lower in the hypertensive group.

Conclusions:

  • Adults with HT exhibit diminished high-frequency hearing and reduced otoacoustic emission amplitudes.
  • Auditory impairment associated with HT originates in the cochlea's ultra-high frequency regions.
  • HT is a potential risk factor for hearing loss, necessitating auditory function screening in hypertensive individuals.
Abstract

Keywords:
Hypertensionaudiologycochlear functionhearing

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