{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T15:21:56Z","timestamp":1786980116842,"version":"build-2736575974"},"reference-count":5,"publisher":"Springer Science and Business Media LLC","issue":"8","license":[{"start":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:00:00Z","timestamp":1745884800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:00:00Z","timestamp":1745884800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100018857","name":"MED-EL Medical Electronics","doi-asserted-by":"publisher","award":["ITIDE"],"award-info":[{"award-number":["ITIDE"]}],"id":[{"id":"10.13039\/501100018857","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005713","name":"Technische Universit\u00e4t M\u00fcnchen","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100005713","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Eur Arch Otorhinolaryngol"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>Detection of complications during rehabilitation and postoperative follow-up after cochlear implantation is essential, especially in children and cognitively impaired patients. Electrode array migration can affect outcomes and must be detected early. Traditional radiographic methods, although effective, are costly and expose patients to radiation. This case report discusses the use of a previously published impedance-based model for cochlear implant array localization in a child with Aym\u00e9-Gripp syndrome.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Impedance telemetry data and X-ray images were collected at the time of initial surgery and before and after the required revision surgery. The impedance-based model was used to estimate the insertion depth of the most basal cochlear implant electrode within the cochlea. The resulting estimates were compared with the electrode positions from radiographs to assess the accuracy and applicability of the model.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>20\u00a0months after implantation, the patient suddenly stopped tolerating the CI audio processor. Retrospectively, the impedance-based model revealed substantial electrode migration, which was confirmed by postoperative radiography.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The proposed model, which uses routine impedance telemetry data without radiation exposure, offers a cost-effective alternative to radiography. Early detection and intervention, particularly in complex cases, improves outcomes and reduces costs, highlighting the importance of objective monitoring.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00405-025-09397-7","type":"journal-article","created":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T11:42:48Z","timestamp":1745926968000},"page":"4349-4352","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Impedance-based detection of cochlear implant array migration: case report in a child with Aym\u00e9-Gripp syndrome"],"prefix":"10.1007","volume":"282","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6744-3680","authenticated-orcid":false,"given":"Stephan","family":"Schraivogel","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sabrina","family":"Regele","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0645-3591","authenticated-orcid":false,"given":"Nora M.","family":"Weiss","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7240-5363","authenticated-orcid":false,"given":"Markus","family":"Wirth","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3062-459X","authenticated-orcid":false,"given":"Barbara","family":"Wollenberg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7090-8087","authenticated-orcid":false,"given":"Marco","family":"Caversaccio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5392-2074","authenticated-orcid":false,"given":"Wilhelm","family":"Wimmer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,4,29]]},"reference":[{"key":"9397_CR1","doi-asserted-by":"publisher","first-page":"199","DOI":"10.1080\/14992020701870197","volume":"47","author":"S Berrettini","year":"2008","unstructured":"Berrettini S, Forli F, Genovese E et al (2008) Cochlear implantation in deaf children with associated disabilities: challenges and outcomes. Int J Audiol 47:199\u2013208","journal-title":"Int J Audiol"},{"key":"9397_CR2","doi-asserted-by":"publisher","first-page":"74","DOI":"10.1097\/MAO.0b013e3181c29fad","volume":"31","author":"AL Marlowe","year":"2010","unstructured":"Marlowe AL, Chinnici JE, Rivas A, Niparko JK, Francis HW (2010) Revision cochlear implant surgery in children: the Johns Hopkins experience. Otol Neurotol 31:74\u201382","journal-title":"Otol Neurotol"},{"key":"9397_CR3","doi-asserted-by":"publisher","first-page":"3111","DOI":"10.1038\/s41591-023-02620-0","volume":"29","author":"Bosch de Basea","year":"2023","unstructured":"de Basea Bosch, Gomez M, Thierry-Chef I, Harbron R et al (2023) Risk of hematological malignancies from CT radiation exposure in children, adolescents and young adults. Nat Med 29:3111\u20139","journal-title":"Nat Med"},{"key":"9397_CR4","doi-asserted-by":"publisher","DOI":"10.1109\/TBME.2024.3509527","author":"S Schraivogel","year":"2025","unstructured":"Schraivogel S, Weder S, Mantokoudis G, Caversaccio M, Wimmer W (2025) Predictive Models for Radiation-Free Localization of Cochlear Implants\u2019 Most Basal Electrode using Impedance Telemetry. IEEE Trans Biom Eng. https:\/\/doi.org\/10.1109\/TBME.2024.3509527","journal-title":"IEEE Trans Biom Eng"},{"key":"9397_CR5","doi-asserted-by":"publisher","first-page":"816","DOI":"10.1016\/j.ajhg.2015.03.001","volume":"96","author":"M Niceta","year":"2015","unstructured":"Niceta M, Stellacci E, Gripp KW et al (2015) Mutations impairing GSK3-mediated MAF phosphorylation cause cataract, deafness, intellectual disability, seizures, and a down syndrome-like facies. Am J Hum Genet 96:816\u2013825","journal-title":"Am J Hum Genet"}],"container-title":["European Archives of Oto-Rhino-Laryngology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00405-025-09397-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00405-025-09397-7\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00405-025-09397-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,6]],"date-time":"2025-09-06T12:35:55Z","timestamp":1757162155000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00405-025-09397-7"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,4,29]]},"references-count":5,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2025,8]]}},"alternative-id":["9397"],"URL":"https:\/\/doi.org\/10.1007\/s00405-025-09397-7","relation":{},"ISSN":["0937-4477","1434-4726"],"issn-type":[{"value":"0937-4477","type":"print"},{"value":"1434-4726","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,4,29]]},"assertion":[{"value":"8 November 2024","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"14 April 2025","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"29 April 2025","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Publication of this case report was approved by our local institutional review board (ID 2023\u2013367-S-SR).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"The authors have no conflicts of interest to disclose.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}