Cochlear implant surgery, relatively safe surgery with low reoperation rate
It was found that most of reoperation cases of cochlear implant were due to “device problems.”
Cochlear implant refers to an implant device that helps a high-degree hearing-impaired patient, who has lost the functions of cochlea, through stimulating the auditory nerves directly so that the patient can hear.
The research team of Professor Il Joon Moon of Department of Otorhinolaryngology-head and neck surgery in Samsung Medical Center analyzed 925 patients who received cochlear implants between October 2001 and March 2019. During this period, a total of 43 patients received reoperation, and the ratio was 4.6% of all surgery patients.
Although causes of reoperation were various, 65% of them were due to device breakdown.
According to the research team, the patients received reoperation 2.4 years in average after the initial surgery because their cochlear implant devices had problems. However, the probability of not having any problem in cochlear implants for 10 years was 96%, and the number was even increased to 98% if a large-scale recall of devices was excluded.
Generally, after receiving cochlear implant surgery, the internal devices can be used for a lifetime if they are not broken down. Main causes of device breakdown were the device’s own flaws, breakdown caused by external environment, etc.
This study was published in the latest issue of JAMA Otolaryngology-Head and Neck Surgery.