Characterizing Cochlear Implant Trans-Impedance Matrix Heatmaps in Patients With Abnormal Anatomy.
| Autor: | Cottrell J; Department of Otolaryngology-Head and Neck Surgery, NYU Langone, New York, New York., Winchester A, Friedmann D, Jethanamest D, Spitzer E, Svirsky M, Waltzman SB, Shapiro WH, McMenomey S, Roland JT Jr |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology [Otol Neurotol] 2024 Oct 01; Vol. 45 (9), pp. e630-e638. Date of Electronic Publication: 2024 Aug 27. |
| DOI: | 10.1097/MAO.0000000000004304 |
| Abstrakt: | Objective: To characterize transimpedance matrix (TIM) heatmap patterns in patients at risk of labyrinthine abnormality to better understand accuracy and possible TIM limitations. Study Design: Retrospective review of TIM patterns, preoperative, and postoperative imaging. Setting: Tertiary referral center. Patients: Patients undergoing cochlear implantation with risk of labyrinthine abnormality. Intervention: None. Results: Seventy-seven patients were evaluated. Twenty-five percent (n = 19) of patients had a TIM pattern variant identified. These variants were separated into 10 novel categories. Overall, 9% (n = 6) of electrodes were malpositioned on intraoperative x-ray, of which 50% (n = 3) were underinserted, 17% (n = 1) were overinserted, 17% (n = 1) had a tip foldover, and 17% (n = 1) had a coiled electrode. The number of patients with a variant TIM pattern and normal x-ray was 18% (n = 14), and the number of patients with normal TIM pattern and malposition noted on x-ray was 3% (n = 2; both were electrode underinsertions that were recognized due to open circuits and surgical visualization).A newly defined skip heat pattern was identified in patients with IP2/Mondini malformation and interscalar septum width <0.5 mm at the cochlear pars ascendens of the basal turn. Conclusions: This study defines novel patterns for TIM heatmap characterization to facilitate collaborative and comparative research moving forward. In doing so, it highlights a new pattern termed skip heat, which corresponds with a deficient interscalar septum of the cochlea pars ascendens of the basal turn in patients with IP2 malformation. Overall, the data assist the surgeon in better understanding the implications and limitations of TIM patterns within groups of patients with risk of labyrinthine abnormalities. Competing Interests: Conflicts of interest and source of funding: Dr. J Thomas Roland Jr. is a consultant for Cochlear Americas and received research funding for CI-related projects, which are not affiliated with this research. (Copyright © 2024, Otology & Neurotology, Inc.) |
| Databáze: | MEDLINE |
| Externí odkaz: |
|