Methods for measuring pre-, intra-, and postoperative skin thickness for cochlear implants.
Cochlear implant
Flap thickness
Headpiece
Magnet strength
Journal
Journal of otology
ISSN: 2524-1753
Titre abrégé: J Otol
Pays: China
ID NLM: 101484080
Informations de publication
Date de publication:
Apr 2022
Apr 2022
Historique:
received:
15
11
2021
revised:
07
12
2021
accepted:
13
12
2021
entrez:
11
8
2022
pubmed:
12
8
2022
medline:
12
8
2022
Statut:
ppublish
Résumé
This study was conducted to determine whether there is a reliable method for measuring the thickness of the retroauricular skin before, during, and after cochlear implantation, which allows the assessment of the optimal force of the external magnet of the cochlear implant (CI). The retroauricular skin thickness of 83 patients who received a CI was measured using three different methods. The thickness was measured on pre- and postoperative CT images, as well as intraoperatively. The magnet category chosen by the surgeon was recorded when the implant was switched on and during the first follow-up visit. Correlation analyses were performed on the different skin thickness measurements and between the skin thickness and magnet strength categories. Only six patients required an exchange of the magnet until the follow-up. Although the median absolute thickness differed significantly between the three measures (p < 0.0001), their thickness values showed highly significant correlations (Pearson's r = 0.457-0.585; p < 0.01). In addition, magnet strength, was significantly correlated with the flap thickness determined pre-, post-, and during surgery. The lowest correlation with magnet strength was found in the intraoperative needle method. All three measurements methods provided a suitable base for determining the ideal magnetic force. However, of particular interest were the pre- and postoperative CT measurements. The first enabled the early assessment of the required magnetic strength and thus a timely postoperative supply, whereas the latter helped to estimate the need for magnetic strength reduction during follow-up care and the feasibility of an early swith-on.
Identifiants
pubmed: 35949548
doi: 10.1016/j.joto.2021.12.001
pii: S1672-2930(21)00064-7
pmc: PMC9349019
doi:
Types de publication
Journal Article
Langues
eng
Pagination
72-77Informations de copyright
© 2021 PLA General Hospital Department of Otolaryngology Head and Neck Surgery. Production and hosting by Elsevier (Singapore) Pte Ltd.
Déclaration de conflit d'intérêts
The Author(s) declare(s) that there is no conflict of interest.
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