TY - JOUR
T1 - Multicentre investigation on electrically evoked compound action potential and stapedius reflex
T2 - How do these objective measures relate to implant programming parameters?
AU - van den Abbeele, Thierry
AU - Noël-Petroff, Nathalie
AU - Akin, Istemihan
AU - Caner, Gül
AU - Olgun, Levent
AU - Guiraud, Jeanne
AU - Truy, Eric
AU - Attias, Josef
AU - Raveh, Eyal
AU - Belgin, Erol
AU - Sennaroglu, Gonca
AU - Basta, Dietmar
AU - Ernst, Arneborg
AU - Martini, Alessandro
AU - Rosignoli, Monica
AU - Levi, Haya
AU - Elidan, Joseph
AU - Benghalem, Abdelhamid
AU - Amstutz-Montadert, Isabelle
AU - Lerosey, Yannick
AU - de vel, Eddy
AU - Dhooge, Ingeborg
AU - Hildesheimer, Minka
AU - Kronenberg, Jona
AU - Arnold, Laure
PY - 2012/2
Y1 - 2012/2
N2 - Objectives: The aims of this study were to collect data on electrically evoked compound action potential (eCAP) and electrically evoked stapedius reflex thresholds (eSRT) in HiResolution TM cochlear implant (CI) users, and to explore the relationships between these objective measures and behavioural measures of comfort levels (M-levels). Methods: A prospective study on newly implanted subjects was designed. The eCAP was measured intraoperatively and at first fitting through neural response imaging (NRI), using the SoundWave TM fitting software. The eSRT was measured intra-operatively by visual monitoring of the stapes, using both singleelectrode stimulation and speech bursts (four electrodes stimulated at the same time). Measures of M-levels were performed according to standard clinical practice and collected at first fitting, 3 and 6 months of CI use. Results: One hundred seventeen subjects from 14 centres, all implanted unilaterally with a HiResolution CII Bionic Ear ® or HiRes 90K ®, were included in the study. Speech burst stimulation elicited a significantly higher eSRT success rate than single-electrode stimulation, 84 vs. 64% respectively. The NRI success rate was 81% intra-operatively, significantly increasing to 96% after 6 months. Fitting guidelines were defined on the basis of a single NRI measurement. Correlations, analysis of variance, and multiple regression analysis were applied to generate a predictive model for the M-levels. Discussion: Useful insights were produced into the behaviour of objective measures according to time, electrode location, and fitting parameters. They may usefully assist in programming the CI when no reliable feedback is obtained through standard behavioural procedures.
AB - Objectives: The aims of this study were to collect data on electrically evoked compound action potential (eCAP) and electrically evoked stapedius reflex thresholds (eSRT) in HiResolution TM cochlear implant (CI) users, and to explore the relationships between these objective measures and behavioural measures of comfort levels (M-levels). Methods: A prospective study on newly implanted subjects was designed. The eCAP was measured intraoperatively and at first fitting through neural response imaging (NRI), using the SoundWave TM fitting software. The eSRT was measured intra-operatively by visual monitoring of the stapes, using both singleelectrode stimulation and speech bursts (four electrodes stimulated at the same time). Measures of M-levels were performed according to standard clinical practice and collected at first fitting, 3 and 6 months of CI use. Results: One hundred seventeen subjects from 14 centres, all implanted unilaterally with a HiResolution CII Bionic Ear ® or HiRes 90K ®, were included in the study. Speech burst stimulation elicited a significantly higher eSRT success rate than single-electrode stimulation, 84 vs. 64% respectively. The NRI success rate was 81% intra-operatively, significantly increasing to 96% after 6 months. Fitting guidelines were defined on the basis of a single NRI measurement. Correlations, analysis of variance, and multiple regression analysis were applied to generate a predictive model for the M-levels. Discussion: Useful insights were produced into the behaviour of objective measures according to time, electrode location, and fitting parameters. They may usefully assist in programming the CI when no reliable feedback is obtained through standard behavioural procedures.
KW - Cochlear implant
KW - Electrically evoked action potential
KW - Electrically evoked stapedius reflex threshold
KW - Neural response imaging
KW - Objective measures
UR - http://www.scopus.com/inward/record.url?scp=84856877361&partnerID=8YFLogxK
U2 - 10.1179/1754762810Y.0000000001
DO - 10.1179/1754762810Y.0000000001
M3 - Article
C2 - 22340749
AN - SCOPUS:84856877361
SN - 1467-0100
VL - 13
SP - 26
EP - 34
JO - Cochlear Implants International
JF - Cochlear Implants International
IS - 1
ER -