[Multi-channel cochlear implants in patients with Mondini malformation].
OBJECTIVE
To describe clinical experiences with multi-channel cochlear implantation in patients with Mondini malformation.


METHODS
Among 300 patients who received multi-channel cochlear implants from 1996 to 2002 in Beijing Tongren Hospital, 15 patients were diagnosed with Mondini malformation. A retrospective analysis was performed dealing with the surgical techniques, mapping and rehabilitations characteristics after surgery. 15 patients with normal cochlear structure are consider as control group.


RESULTS
Gusher is found more common than the normal cochlear implantation, most of them are serious. The electrodes are inserted in the "cochleostomy" in full length of 13 Patients, 2 pairs of electrodes remains outside of "cochleostomy" in 2 patients. No serious complications occurred after implantation. All patients have auditory sensations. The impedance of the electrodes, the T level, C level and the hearing threshold are similar with the normal cochlear implantation group. The results have no significant difference in compare with normal cochlear group(P > 0.05).


CONCLUSIONS
Multi-channel cochlear implantation could be performed safely in patients with Mondini malformation. The primary outcome for patients with Mondini malformation are similar to those with normal cochlear structure following the multi-channel cochlear implantation.
Li
Yong-xin
YX
Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital University of Medical Science, Beijing 100730, China. entlyx@sina.com
Han
De-min
DM
Zhao
Xiao-tian
XT
Chen
Xue-qing
XQ
Kong
Ying
Y
Zheng
Jun
J
Liu
Bo
B
Liu
Sha
S
Mo
Ling-yan
LY
Zhang
Hua
H
Wang
Shuo
S
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation; D007758:Ear, Inner / Q000002:abnormalities* / Q000601:surgery*; D004432:Ear, Middle / Q000002:abnormalities / Q000601:surgery; D005260:Female; D006319:Hearing Loss, Sensorineural / Q000151:congenital / Q000534:rehabilitation / Q000601:surgery*; D006801:Humans; D008297:Male; D017755:Prosthesis Fitting; D012189:Retrospective Studies; D013067:Speech Perception; D016896:Treatment Outcome