OBJECTIVE: To investigate the intracochlear electrode position in using rotational tomography in adult cochlear implant patients. STUDY DESIGN: Retrospective. SETTING: Tertiary referral center. PATIENTS: Eighteen adult patients being implanted either with a Nucleus straight electrode array or a Contour electrode with a total of 22 implanted ears. Preoperative computed tomography had been without evidence for obliteration, ossification, or malformation of the cochlea. INTERVENTION: Rotational tomography. MAIN OUTCOME MEASURES: The intracochlear electrode position was evaluated with regard to scala tympani, scala vestibuli, and a dislocation from one scala to the other. The intraoperative procedure was compared with the electrode position by analyzing the operating reports. RESULTS: Preliminary results indicate, respectively, that there is a higher incidence of intracochlear trauma in using the Contour electrode array than expected with a more frequent dislocation of electrode arrays from scala tympani to scala vestibuli and that there is a higher rate of scala vestibuli insertions. CONCLUSIONS: The impact of these findings may influence further developments of electrode arrays as well as surgical techniques for implantation.
OBJECTIVE: To investigate the intracochlear electrode position in using rotational tomography in adult cochlear implant patients. STUDY DESIGN: Retrospective. SETTING: Tertiary referral center. PATIENTS: Eighteen adult patients being implanted either with a Nucleus straight electrode array or a Contour electrode with a total of 22 implanted ears. Preoperative computed tomography had been without evidence for obliteration, ossification, or malformation of the cochlea. INTERVENTION: Rotational tomography. MAIN OUTCOME MEASURES: The intracochlear electrode position was evaluated with regard to scala tympani, scala vestibuli, and a dislocation from one scala to the other. The intraoperative procedure was compared with the electrode position by analyzing the operating reports. RESULTS: Preliminary results indicate, respectively, that there is a higher incidence of intracochlear trauma in using the Contour electrode array than expected with a more frequent dislocation of electrode arrays from scala tympani to scala vestibuli and that there is a higher rate of scala vestibuli insertions. CONCLUSIONS: The impact of these findings may influence further developments of electrode arrays as well as surgical techniques for implantation.
Authors: George B Wanna; Jack H Noble; Theodore R McRackan; Benoit M Dawant; Mary S Dietrich; Linsey D Watkins; Alejandro Rivas; Theodore A Schuman; Robert F Labadie Journal: Otol Neurotol Date: 2011-04 Impact factor: 2.311
Authors: Gijs K A van Wermeskerken; Mathias Prokop; Adriaan F van Olphen; Frans W J Albers Journal: Eur Arch Otorhinolaryngol Date: 2007-07-14 Impact factor: 2.503
Authors: Charles C Finley; Timothy A Holden; Laura K Holden; Bruce R Whiting; Richard A Chole; Gail J Neely; Timothy E Hullar; Margaret W Skinner Journal: Otol Neurotol Date: 2008-10 Impact factor: 2.311