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Auditory function assessment in patients with chronic obstructive pulmonary disease.
Hoda A Eid1, Heba H Eltrawy1, Shaimaa E Kabil2
1Faculty of Medicine, Department of Chest Diseases, Al-Azhar University, Cairo, Egypt.
SAGE Open Medicine
|December 5, 2023
Summary
Chronic obstructive pulmonary disease (COPD) patients experience significant hearing loss, which worsens with respiratory failure. This auditory impairment is linked to lower oxygen levels and higher smoking impact.
Area of Science:
- Otorhinolaryngology
- Pulmonology
- Audiology
Background:
- Chronic obstructive pulmonary disease (COPD) is a multisystem disease with numerous comorbidities.
- Hearing function, reliant on cochlear function, can be compromised by oxygenation issues.
- Hearing impairment is a significant concern and potential comorbidity in COPD patients.
Purpose of the Study:
- To evaluate the auditory status of patients diagnosed with chronic obstructive pulmonary disease (COPD).
Main Methods:
- The study included 120 participants: 60 healthy controls, 30 COPD patients without respiratory failure, and 30 COPD patients with respiratory failure.
- Hearing function was assessed using pure tone audiometry and auditory brainstem response (ABR).
Main Results:
- COPD patients exhibited statistically significant hearing impairment compared to controls.
- Hearing impairment was more pronounced in COPD patients with respiratory failure.
- Auditory impairment correlated negatively with oxygen tension (PaO2) and positively with smoking index.
Conclusions:
- Hearing impairment is notably higher in COPD patients, particularly those with respiratory failure.
- Hypoxia contributes to poorer pure tone audiometry results and prolonged ABR latencies, suggesting retro-cochlear involvement.
- COPD patients showed elevated hearing thresholds across frequencies, indicating mild to moderate hearing loss.
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