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Association of tympanostomy tubes with future assistive hearing devices-a population based study
Jason A Beyea1,2, Bonnie Cooke3, Emily Rosen3
1Department of Otolaryngology, Kingston Health Sciences Centre, Queen's University, Kingston, 144 Brock Street, Kingston, Ontario, K7L 5G2, Canada. jason.beyea@queensu.ca.
Background:
Ear (tympanostomy) tube (TT) placement is a common ambulatory surgery in children. Despite the commonality of this treatment, the long-term effects are unknown. The objective of this study was to determine the rate of permanent hearing loss, as measured by use of a rehabilitative hearing device.
Methods:
A retrospective comprehensive population-based cohort study was performed, evaluating all hospitals in the Canadian province of Ontario. Three cohorts of children were constructed: TT - at least one ear tube procedure (n = 193,880), No-TT -recurrent visits to a physician for middle ear disease, did not undergo ear tubes (n = 203,283), and Control - an age/sex matched group who had not undergone ear tubes and who didn't have repeat physician visits for middle ear disease (n = 961,168). The main outcome measures were risk and odds ratio (OR) of rehabilitative hearing devices.
Results:
The TT cohort had a higher risk of obtaining a hearing aid (OR 4.53 vs. No-TT, p < 0.001; OR 10.81 vs. Control, p < 0.001), an FM system (OR 3.84 vs. No-TT, p < 0.001; OR 15.13 vs. Control, p < 0.001), and an implanted bone conduction device (OR 5.08 vs. No-TT, p < 0.001; OR 15.67 vs. Control, p < 0.001).
Conclusions:
An association between ear tube placement and long-term need for a rehabilitative hearing device was found. This association warrants future prospective research in this area.
