Residual speech recognition and cochlear implant performance: effects of implantation criteria.
OBJECTIVE
This study aimed to determine the effects of preoperative speech reception on postoperative speech recognition with a cochlear implant and to develop a statistical index allowing prediction of postoperative speech recognition before implantation.


METHODS
The study design was a retrospective case review with statistical modeling.


METHODS
The study was conducted at a tertiary referral center with an associated Veteran's Administration hospital.


METHODS
Postlingually deafened adults with and without residual speech reception participated.


METHODS
Cochlear implantation with Cochlear Corporation CI-22 and CI-24 devices was performed.


METHODS
Monosyllabic word recognition was measured.


RESULTS
Duration of deafness and preoperative sentence recognition are both significant predictors of word recognition with a cochlear implant and can account for 80% of the variance in word recognition.


CONCLUSIONS
Cochlear implant outcomes are variable but predictable within specific ranges.
Rubinstein
J T
JT
Department of Otolaryngology - Head & Neck Surgery, The University of Iowa Hospitals and Clinics, Iowa City 52242, USA.
Parkinson
W S
WS
Tyler
R S
RS
Gantz
B J
BJ
D000328:Adult; D019929:Cochlear Implantation / Q000295:instrumentation*; D003638:Deafness / Q000601:surgery*; D004867:Equipment Design; D006309:Hearing / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D011379:Prognosis; D012189:Retrospective Studies; D013067:Speech Perception / Q000502:physiology*; D013997:Time Factors; D016896:Treatment Outcome