Facial nerve stimulation after successful multichannel cochlear implantation.

Postoperative rehabilitation after cochlear implantation may be difficult and frustrating for both patient and audiologist. The occurrence of facial nerve stimulation with associated twitching and discomfort can interfere with the rehabilitative process and be a cause of great concern to the patient. Such stimulation can occur at the time of initial "tune-up" or can be delayed by months or years. The incidence of postoperative facial nerve stimulation 109 consecutive patients operated by the same surgeon over a period of 7 years is reviewed. Possible causes for immediate and delayed stimulation are discussed, and strategies at surgery are outlined. Rehabilitative techniques for dealing with facial nerve stimulation are reviewed.