CONCLUSION: The study shows that there are differences in the measurement of the action potentials with and without the stylet in the Nucleus Freedom Contour Advance that are higher in the apex than in the base of the cochlea. OBJECTIVES: To determine if there are differences in the intraoperative impedances and in the neural response telemetry threshold values in the Nucleus Freedom Contour Advance before and after stylet removal. SUBJECTS AND METHODS: This was a prospective clinical study. Intraoperative impedances and neural response telemetry in users of the Freedom Contour Advance Cochlear Implant were measured before and after stylet removal. RESULTS: There was a significant reduction in the impedance values of an average 1.5 kOmega+/-2.3 in common ground mode and 1.3 kOmega+/-2.3 for all monopolar modes after the stylet removal (p < 0.001). When analyzing the apical, medium, and basal electrodes, there was a statistically significant reduction in the neural response thresholds after stylet removal only in the apical electrodes (p = 0.001).
CONCLUSION: The study shows that there are differences in the measurement of the action potentials with and without the stylet in the Nucleus Freedom Contour Advance that are higher in the apex than in the base of the cochlea. OBJECTIVES: To determine if there are differences in the intraoperative impedances and in the neural response telemetry threshold values in the Nucleus Freedom Contour Advance before and after stylet removal. SUBJECTS AND METHODS: This was a prospective clinical study. Intraoperative impedances and neural response telemetry in users of the Freedom Contour Advance Cochlear Implant were measured before and after stylet removal. RESULTS: There was a significant reduction in the impedance values of an average 1.5 kOmega+/-2.3 in common ground mode and 1.3 kOmega+/-2.3 for all monopolar modes after the stylet removal (p < 0.001). When analyzing the apical, medium, and basal electrodes, there was a statistically significant reduction in the neural response thresholds after stylet removal only in the apical electrodes (p = 0.001).
Authors: Chin-Tuan Tan; Mario Svirsky; Abbas Anwar; Shaun Kumar; Bernie Caessens; Paul Carter; Claudiu Treaba; J Thomas Roland Journal: Laryngoscope Date: 2013-04 Impact factor: 3.325
Authors: Amanda Christina Gomes de Moura; Maria Valéria Schmidt Goffi-Gomez; Maria Ines Vieira Couto; Rubens Brito; Robinson Koji Tsuji; Debora Maria Befi-Lopes; Carla Gentile Matas; Ricardo Ferreira Bento Journal: Int Arch Otorhinolaryngol Date: 2014-07-17