TY  - JOUR
AU  - Dahm, Markus C.
AU  - Clark, Graeme M.
AU  - Franz, Burkhard K-H.
AU  - Shepherd, Robert K.
AU  - Burton, Martin J.
AU  - ROBINS-BROWNE, ROY
Y2  - 2014/05/21
Y1  - 1994
UR  - http://hdl.handle.net/11343/27373
AB  - Pneumococcal otitis media is frequent in young children and could lead to labyrinthitis post-implantation. To assess the risk and methods of minimizing it by a graft to the round window around the electrode entry point, we have used a cat animal model of pneumococcal otitis media. Twenty-one kittens were used in the study. Thirty-two cochleas were implanted when the kittens were 2 months of age. Fourteen cochleas were implanted without using a graft (12 were available for study); 9 had a fascial graft, and 9 a Gelfoam® graft (7 were available for study). The implanted kittens had their bullae inoculated with Streptococcus pneumoniae 2 months after implantation and were sacrificed 1 week later. There were also 9 unimplanted control ears which were inoculated when the animals were 4 months of age. Labyrinthitis occurred in 44% of unimplanted control, 50% of implanted ungrafted, and 6% of implanted grafted (fascia and Gelfoam®) cochleas. There was no statistically significant difference between the unimplanted control and the implanted cochleas (p < 0.05). There was, however, a difference between the implanted-ungrafted and implanted grafted cochleas, but not between the use of fascia and Gelfoam® to graft the round window entry point. As a result, the data indicates that cochlear implantation does not increase the risk of labyrinthitis following pneumococcal otitis media, but it is desirable to use fascia as a graft to the round window around the electrode entry point.
KW  - deafness
KW  - hearing prosthesis
KW  - Streptococcus pneumoniae
KW  - animal model
KW  - round window membrane
T1  - Cochlear implantation in children: labyrinthitis following pneumococcal otitis media in unimplanted and implanted cat cochleas
IS  - Acta Otolaryngologica
VL  - 114
SP  - 620-625
L1  - /bitstream/handle/11343/27373/119355_vol8_348.pdf?sequence=1&isAllowed=n
ER  -