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Inner ear function in patients with obstructive sleep apnea.

Xin Li1,2, Wen-Jing Chen1,2, Xiao-Yan Zhang3

  • 1School of Clinical Medicine, Tsinghua University, NO.1, Tsinghua Yuan, Haidian District, Beijing, 100084, China.

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Summary

Obstructive sleep apnea-hypopnea syndrome (OSAHS) is linked to high-frequency hearing loss and prolonged auditory brainstem response (ABR) latencies. Inner ear function is impaired in patients with OSAHS, indicating a need for further research.

Keywords:
ABRDPOAEInner earOSAHS

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Area of Science:

  • Otorhinolaryngology
  • Sleep Medicine
  • Neuroscience

Background:

  • The inner ear's high metabolic activity and low oxygen tension make it susceptible to hypoxia.
  • Obstructive sleep apnea-hypopnea syndrome (OSAHS) is characterized by repetitive hypoxia.
  • Inner ear dysfunction may be a consequence of OSAHS.

Purpose of the Study:

  • To investigate inner ear function in patients diagnosed with OSAHS.
  • To compare auditory and electrophysiological measures between OSAHS patients and controls.

Main Methods:

  • Study included 58 OSAHS patients and 20 healthy adults.
  • Evaluated air-conduction thresholds, auditory brainstem response (ABR) at 11 Hz and 51 Hz, and distortion product otoacoustic emissions (DPOAE).
  • Compared audiological and electrophysiological parameters between groups.

Main Results:

  • OSAHS patients showed higher air-conduction thresholds at 4 kHz and 8 kHz.
  • Prolonged wave I and wave V latencies in ABR were observed in OSAHS patients at both stimulation rates.
  • Reduced DPOAE amplitude was noted in OSAHS patients, despite no significant hearing loss.

Conclusions:

  • Adults with severe OSAHS exhibit high-frequency hearing loss.
  • Prolonged wave I and wave V latencies in ABR suggest auditory pathway dysfunction in OSAHS.
  • Inner ear function is compromised in OSAHS patients.