Advances to Electrode Pullback in Cochlear Implant Surgery

Objective. To observe the intracochlear behavior of a cochlear implant electrode insertion technique (called “pullback”) in temporal bones. Study Design. Experimental. Settings. Tertiary referral center. Method. The change of the intracochlear electrode position was investigated under various condit...

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Main Authors: Ingo Todt, Dietmar Basta, Rainer Seidl, Arne Ernst
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1100/2012/126767
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author Ingo Todt
Dietmar Basta
Rainer Seidl
Arne Ernst
author_facet Ingo Todt
Dietmar Basta
Rainer Seidl
Arne Ernst
author_sort Ingo Todt
collection DOAJ
description Objective. To observe the intracochlear behavior of a cochlear implant electrode insertion technique (called “pullback”) in temporal bones. Study Design. Experimental. Settings. Tertiary referral center. Method. The change of the intracochlear electrode position was investigated under various conditions of an electrode pullback (N=54) in 9 radiologically, size-estimated temporal bones (TBs). Those TBs were prepared by removal of the cochlear scalar roof to apply digital video capture procedures to monitor the pullback procedures. The digitally captured pictures were analyzed with specific software. Results. An optimal pullback of the electrode varied between 1.37 mm and 2.67 mm. While a limited pullback is without risk, an extended pullback bears the risk of removing the electrode tip out of its initial position or out of the cochlea. A correlation between cochlear size and the amount of pullback was not found. Conclusion. An initial insertion to the first or the second marker on the electrode followed by a limited pullback of about 1.37 mm to 1.5 mm can be recommended to achieve an optimized perimodiolar position. A pullback of up to two marker positions bears the risk of removing the electrode tip out of its initial position.
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spelling doaj-art-e8dec14fbc624b0d8ab9aa82db3f8c1c2025-02-03T01:26:16ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/126767126767Advances to Electrode Pullback in Cochlear Implant SurgeryIngo Todt0Dietmar Basta1Rainer Seidl2Arne Ernst3Department of Otolaryngology, Unfallkrankenhaus Berlin, 12683 Berlin, GermanyDepartment of Otolaryngology, Unfallkrankenhaus Berlin, 12683 Berlin, GermanyDepartment of Otolaryngology, Unfallkrankenhaus Berlin, 12683 Berlin, GermanyDepartment of Otolaryngology, Unfallkrankenhaus Berlin, 12683 Berlin, GermanyObjective. To observe the intracochlear behavior of a cochlear implant electrode insertion technique (called “pullback”) in temporal bones. Study Design. Experimental. Settings. Tertiary referral center. Method. The change of the intracochlear electrode position was investigated under various conditions of an electrode pullback (N=54) in 9 radiologically, size-estimated temporal bones (TBs). Those TBs were prepared by removal of the cochlear scalar roof to apply digital video capture procedures to monitor the pullback procedures. The digitally captured pictures were analyzed with specific software. Results. An optimal pullback of the electrode varied between 1.37 mm and 2.67 mm. While a limited pullback is without risk, an extended pullback bears the risk of removing the electrode tip out of its initial position or out of the cochlea. A correlation between cochlear size and the amount of pullback was not found. Conclusion. An initial insertion to the first or the second marker on the electrode followed by a limited pullback of about 1.37 mm to 1.5 mm can be recommended to achieve an optimized perimodiolar position. A pullback of up to two marker positions bears the risk of removing the electrode tip out of its initial position.http://dx.doi.org/10.1100/2012/126767
spellingShingle Ingo Todt
Dietmar Basta
Rainer Seidl
Arne Ernst
Advances to Electrode Pullback in Cochlear Implant Surgery
The Scientific World Journal
title Advances to Electrode Pullback in Cochlear Implant Surgery
title_full Advances to Electrode Pullback in Cochlear Implant Surgery
title_fullStr Advances to Electrode Pullback in Cochlear Implant Surgery
title_full_unstemmed Advances to Electrode Pullback in Cochlear Implant Surgery
title_short Advances to Electrode Pullback in Cochlear Implant Surgery
title_sort advances to electrode pullback in cochlear implant surgery
url http://dx.doi.org/10.1100/2012/126767
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AT dietmarbasta advancestoelectrodepullbackincochlearimplantsurgery
AT rainerseidl advancestoelectrodepullbackincochlearimplantsurgery
AT arneernst advancestoelectrodepullbackincochlearimplantsurgery