Hearing loss is a common problem caused by noise, disease, aging, illness, and genetics. General signs of hearing loss occurs suddenly and develops gradually that includes asking people to repeat themselves, listening to music or television with a higher volume than required. There are two main types of hearing loss depending on where the problem lies they are conductive hearing loss, sensorineural hearing loss.
Sensorineural is caused by damage to the auditory nerve that occurs naturally with age. There are several options that help to improve a person’s ability to hear and communicate which includes digital hearing aids, cochlear implants, middle ear implants, bone anchored implants, wireless devices, etc. The 35delG mutation was detected in 11/ 712 unrelated blood donors.
By the end of 2012, more than 30,000 devices had been implanted worldwide and in Switzerland a total of 2,237 CIs. Since 2004, around 150 cochlear implantations per year were performed in Switzerland for a population of almost 8 million inhabitants. The greatest increase over the last 7 years has been in the under 3 and over 60 age groups. The greatest decrease has been the age group 3 to 18 years.