Electrode insertion mechanics and outer wall forces with the Nucleus 24 Contour Advance<sup>TM</sup>electrode

Roland, J. Thomas; Shevla, M; Gibson, Peter; Treaba, Claudiu

doi:10.1179/cim.2005.6.supplement-1.5

Cited by 4 publications

(3 citation statements)

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“…Atraumatic insertion was achieved by precise perimodiolar positioning in the scala tympani, thereby affording protection to intracochlear structures. 21 This is consistent with current findings where the majority of surgeons utilized the AOS technique with results showing successful preservation of residual hearing in majority of cases.…”

Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 66%

“…Current findings showed commonalities with those of Roland et al 21 with regard to the surgical techniques, electrode insertion and the electrode arrays used. In the study of Roland et al 21 they examined the use of Contour Advance electrodes with the AOS technique. Atraumatic insertion was achieved by precise perimodiolar positioning in the scala tympani, thereby affording protection to intracochlear structures.…”

Section: Resultssupporting

confidence: 66%

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Preservation of residual hearing after cochlear implant surgery: an exploration of residual hearing function in a group of recipients at cochlear implant units

Gautschi-Mills

Khoza-Shangase

Pillay

2019

Brazilian Journal of Otorhinolaryngology

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Findings suggest improved cochlear implant surgical outcomes when compared to previous studies implying progress in surgical techniques. The surgical skill and experience of the surgeon are evidenced by the minimal intraoperative complications and the high success rate of hearing preservation. This is a positive prognostic indicator for individuals with preoperative residual hearing as the preserved residual hearing allows for the potential of electro-acoustic stimulation, which in turn has its own hearing benefits.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 66%

Section: Resultssupporting

confidence: 66%

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Preservation of residual hearing after cochlear implant surgery: an exploration of residual hearing function in a group of recipients at cochlear implant units

Gautschi-Mills

Khoza-Shangase

Pillay

2019

Brazilian Journal of Otorhinolaryngology

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The Effects of Insertion Speed on Inner Ear Function during Cochlear Implantation: A Comparison Study

2012

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Objective: To investigate the insertion speed and its impact on electrode insertion characteristics, hearing preservation and clinical vestibular function in a prospective cohort study with a retrospective control group at a tertiary otology/neurotology centre. Interventions: Hearing-preserving cochlear implantation using systemic and topical steroids in conjunction with a round-window approach, a complete cochlear coverage electrode and two different electrode insertion speeds [60 mm/min (n = 18) vs. 15 mm/min (n = 22)] was performed. Results: The insertion speed had a significant impact on various insertion characteristics as well as hearing preservation and vestibular function. In conclusion, a slow electrode insertion speed appears to facilitate full electrode insertion, reduce the occurrence of insertion resistance as well as promote preservation of residual hearing and vestibular function after cochlear implantation.

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Dexamethasone Is One of the Factors Minimizing the Inner Ear Damage from Electrode Insertion in Cochlear Implantation

et al. 2016

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The aim of this study was to investigate the efficacy of preoperative and intraoperative steroid administration for inner ear protection in cochlear implantation (CI). Nineteen subjects who underwent CI were included in the study, and 10 subjects were enrolled as controls (steroid-administered group, n = 19; control group, n = 10). Dexamethasone (dexamethasone sodium phosphate, 5 mg/ml) was systemically administered preoperatively (1 ml) and topically applied during CI (0.5 ml). The extent of hearing preservation (HP) after CI and the change in the bithermal caloric response were evaluated. Hearing level was calculated using mean thresholds [(250 Hz + 500 Hz + 1,000 Hz + 2,000 Hz)/4]. Preoperative hearing thresholds were similar in the steroid-administered and control groups (100.92 ± 12.60 vs. 103.29 ± 14.39 dB, p = 0.650). The mean thresholds significantly increased in both groups after surgery (108.46 ± 14.08 dB, p = 0.006, for the steroid-administered group; 117.50 ± 6.34 dB, p = 0.027, for the control group), and the difference between the groups was also significant (p = 0.027). The postoperative shift in the hearing thresholds at frequencies of 500 and 1,000 Hz was significant in the steroid-administered group and that at the frequencies of 500, 1,000 and 2,000 Hz was significant in the control group. However, the extent of the shift in hearing threshold levels at each frequency was not significantly different between the groups. Preservation of hearing thresholds was compared between the groups, and there were significantly more subjects with complete and partial HP in the steroid-administered group than in the control group (p = 0.008). The preoperative caloric response was maintained after CI in the steroid-administered group. This study suggests that the perioperative use of a steroid could minimize the inner ear damage after CI.

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Electrode insertion mechanics and outer wall forces with the Nucleus 24 Contour Advance^TMelectrode

Cited by 4 publications

References 2 publications

Preservation of residual hearing after cochlear implant surgery: an exploration of residual hearing function in a group of recipients at cochlear implant units

Preservation of residual hearing after cochlear implant surgery: an exploration of residual hearing function in a group of recipients at cochlear implant units

The Effects of Insertion Speed on Inner Ear Function during Cochlear Implantation: A Comparison Study

Dexamethasone Is One of the Factors Minimizing the Inner Ear Damage from Electrode Insertion in Cochlear Implantation

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Electrode insertion mechanics and outer wall forces with the Nucleus 24 Contour AdvanceTMelectrode

Cited by 4 publications

References 2 publications

Preservation of residual hearing after cochlear implant surgery: an exploration of residual hearing function in a group of recipients at cochlear implant units

Preservation of residual hearing after cochlear implant surgery: an exploration of residual hearing function in a group of recipients at cochlear implant units

The Effects of Insertion Speed on Inner Ear Function during Cochlear Implantation: A Comparison Study

Dexamethasone Is One of the Factors Minimizing the Inner Ear Damage from Electrode Insertion in Cochlear Implantation

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Electrode insertion mechanics and outer wall forces with the Nucleus 24 Contour Advance^TMelectrode