Study for cochlear microphonic potential test in patients with profound sensorineural hearing loss.
- Author:
Line WANG
1
;
Zhen WANG
;
Keli CAO
Author Information
1. Department of Otolaryngology, Beijing Friendship Hospital of Capital Medical University, China.
- Publication Type:Journal Article
- MeSH:
Adolescent;
Adult;
Child;
Child, Preschool;
Cochlear Implantation;
methods;
Cochlear Microphonic Potentials;
Female;
Hearing Loss, Sensorineural;
physiopathology;
Humans;
Infant;
Male;
Young Adult
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2010;24(13):592-597
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To report intraoperative round window cochlear microphonic potential test (CM) in patients with profound sensorineural deafness.
METHOD:Intraoperative round window CM test were performed on 40 cases with profound sensorineural deafness during cochlear implantation surgery under general anesthesia in the standard operating room. CM were compared with their reliable preoperation distortion product otoacoustic emission (DPOAE).
RESULT:The CM were found in 40 patients. The rate at 0.5, 1.0, 2.0, 4.0. kHz was respectively 90%, 97.5%, 100%, 92.5%. The preoperation DPOAE were found in some frequency in 9 cases. The rate at 0.5, 1.0, 2.0, 4.0 kHz was respectively was 2.5%, 2.5%, 17.5%, 2.5%.
CONCLUSION:The elicited rate of CM was obviously higher than the one of DPOAE in the same patient with profound sensorineural deafness. The intraoperative round window CM may objectively and accurately estimate the part of cochlear function in patients with profound sensorineural deafness.
