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Is COPD associated with alterations in hearing? A systematic review and meta-analysis
Arash Bayat1, Nader Saki2, Soheila Nikakhlagh2
1Department of Audiology, Hearing Research Center, Imam Khomeini Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
International Journal of Chronic Obstructive Pulmonary Disease
|January 16, 2019
Summary
Chronic obstructive pulmonary disease (COPD) patients exhibit a higher incidence of hearing loss (HL) compared to controls. Prolonged auditory brainstem response (ABR) latencies suggest retro-cochlear involvement in COPD patients.
Area of Science:
- Otorhinolaryngology
- Pulmonology
- Audiology
Background:
- Chronic obstructive pulmonary disease (COPD) affects over 600 million people globally, characterized by persistent airflow obstruction.
- Auditory system dysfunction is an underrecognized comorbidity in COPD patients.
Purpose of the Study:
- To systematically review and quantitatively analyze the impact of COPD on auditory system function.
Main Methods:
- Systematic search of seven electronic databases and reference lists.
- Independent, blinded data extraction and quality assessment by two investigators.
- Meta-analysis of pooled data using Cochrane's Review Manager 5.3.
Main Results:
- Sixteen studies were included, defining hearing loss (HL) via pure tone audiometry (PTA), auditory brainstem response (ABR), and P300 parameters.
- COPD patients showed significantly prolonged ABR wave latencies (SMD=0.27, P=0.02) and higher PTA thresholds (SMD=1.76, P=0.0004) compared to controls.
- Significantly higher latencies were observed in COPD patients (SMD=1.30, P=0.0001).
Conclusions:
- COPD patients have a significantly higher incidence of HL than controls.
- Prolonged ABR latencies indicate potential retro-cochlear involvement in COPD.
- HL is a frequent comorbidity of COPD, though often overlooked by clinicians.
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