Final answer:
Hearing aids are typically removed before surgery, but the decision should be made in consultation with healthcare providers. Cochlear implants, which stimulate auditory nerves directly, would not restore hearing loss due to an abnormal auditory nerve or cochlear fracture.
Step-by-step explanation:
When it comes to whether hearing aids should be removed before surgery, the decision is typically made on a case-by-case basis in consultation with the medical professionals involved. However, individuals with hearing loss may use hearing aids that press against the bone behind the ear to send sound vibrations to the cochlea. In contrast, cochlear implants are designed for cases where there is damage or loss of the cilia in the cochlea but nerves remain functional. These implants directly stimulate the nerves and would not be suitable in cases involving an abnormal auditory nerve, fractured cochlea, or damage to the middle ear bones. It is important to discuss with your surgeon and anesthesiologist whether to remove hearing aids or implants before surgery, as they may interfere with surgery or monitoring equipment.
Regarding the types of hearing loss not restored by a cochlear implant, these would include hearing loss due to an abnormal auditory nerve or fracture of the cochlea, as cochlear implants work by converting sounds to electrical impulses sent to an intact auditory nerve.