Factors influencing the efficacy of round window dexamethasone protection of residual hearing post-cochlear implant surgery

2009 ◽  
Vol 255 (1-2) ◽  
pp. 67-72 ◽  
Author(s):  
Andrew Chang ◽  
Hayden Eastwood ◽  
David Sly ◽  
David James ◽  
Rachael Richardson ◽  
...  
2019 ◽  
Vol 40 (4) ◽  
pp. e373-e380 ◽  
Author(s):  
Cristina Sierra ◽  
Manuela Calderón ◽  
Eduardo Bárcena ◽  
Alexandra Tisaire ◽  
Eduardo Raboso

2016 ◽  
Vol 136 (4) ◽  
pp. 420-424 ◽  
Author(s):  
Adrien A. Eshraghi ◽  
Jonathan Roell ◽  
Noah Shaikh ◽  
Fred F. Telischi ◽  
Blake Bauer ◽  
...  

2020 ◽  
Vol 8 (2) ◽  
pp. 432-436 ◽  
Author(s):  
Mozafar Sarafraz ◽  
Mahsa Heidari ◽  
Arash Bayat ◽  
Mohammad Ghasem Hanafi ◽  
Ali Fahimi ◽  
...  

2019 ◽  
Vol 128 (6_suppl) ◽  
pp. 38S-44S ◽  
Author(s):  
Seong-Cheon Bae ◽  
You-Ree Shin ◽  
Young-Myoung Chun

Objectives: The benefit of round window (RW) approach for cochlear implant (CI) has been well studied. Because the RW represents a natural door to scala tympani, it facilitates precise electrode insertion. Atraumatic electrode insertion can also be performed without drilling the cochlear lateral wall. However, the RW approach has several limitations. The purpose of this study is to describe successful CI surgeries utilizing the RW approach except for severe cases of temporal bone anomaly. The authors’ successful surgical solution for cases involving difficult RW access is also described. Materials and Methods: We retrospectively analyzed 377 consecutive surgeries of cochlear implantation performed between June 2010 and December 2018 by a single experienced surgeon. Standard and alternative procedures were used according to anatomical variations. Standard procedures included modified techniques of mastoidectomy in the RW approach, opening of facial recess, exposure of RW membrane, and electrode insertion. Difficult cases involving severe rotated cochlea or hypoplastic mastoid were successfully treated with RW insertion using alternative procedures such as external auditory canal (EAC) wall mobilization and endomeatal approach. Results: We performed CI surgery through a reproducible RW technique in two cases involving endomeatal approach and three cases of EAC mobilization. Other cases were treated using the standard procedure. Conclusion: Cochlear implant surgery through RW is reliable, safe, and effective. The RW technique is reproducible via several surgical procedures in most CI cases. Identification and safe exposure of RW membrane is a prerequisite for successful electrode insertion in cochlear implant surgery.


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