posted by news on may 20, 2014
Original Source: http://www.sciencecodex.com/sleep_apnea_tied_to_hearing_loss_in_large_study-134044
ATS 2014, SAN DIEGO ─Both high and low frequency hearing impairment have been linked with sleep apnea in a new study of nearly 14,000 individuals.
"In our population-based study of 13,967 subjects from the Hispanic Community Health Study/Study of Latinos, we found that sleep apnea was independently associated with hearing impairment at both high and low frequencies after adjustment for other possible causes of hearing loss," said lead author Amit Chopra, MD, currently at the Albany Medical Center in New York.
The study was presented at the 2014 American Thoracic Society International Conference.
All subjects underwent successful in-home sleep apnea studies and on-site audiometric testing at baseline. Sleep apnea was assessed with the apnea-hypopnea index (AHI), which indicates sleep apnea severity based on the number of apnea (complete cessation of airflow) and hypopneas (partial cessation of airflow) per hour of sleep. Sleep apnea was defined as an AHI ≥ 15 events/hour. High frequency hearing impairment was defined as having a mean hearing threshold of greater than 25 decibels in either ear at 2000, 3000, 4000, 6000 and 8000 Hz, and low frequency hearing impairment was defined as having a mean hearing threshold of greater than 25 decibels in either ear at 500 Hz and 1000 Hz.