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A retrospective European multicenter analysis of the functional outcomes after active middle ear implant surgery using the third generation vibroplasty couplers

Authors :
Andreas Radeloff
Rudolf Hagen
Maurizio Barbara
Luis Lassaletta
Robert Mlynski
Piotr H. Skarzynski
Torsten Rahne
Stefan K. Plontke
Source :
European Archives of Oto-Rhino-Laryngology
Publication Year :
2020
Publisher :
Springer Science and Business Media LLC, 2020.

Abstract

Purpose To evaluate the safety and performance of three novel vibroplasty couplers that allow attachment of the floating mass transducer of a transcutaneous active middle ear implant (AMEI) to the round window (RW) membrane, the long process (LP), or the incus body and the short process (SP) of the incus. Methods Retrospective multicenter cohort study of 25 AMEI users with sensorineural or mixed hearing loss that were among the first implanted with an AMEI vibrating ossicular prosthesis in combination with the third generation of vibroplasty couplers between 2014 and 2016. Main Outcome Measures were bone-conduction pure-tone and vibroplasty thresholds, postoperative aided sound field thresholds and postoperative aided word recognition score (WRS). Results Bone conduction threshold changes of more than 10 dB in 4PTABC were observed in two subjects. A mean improvement of 57.8% in speech recognition was observed with a mean WRS at 65 dB SPL improving from 14.8% (SD 21.9%) preoperatively to a mean aided score of 72.6% (SD 18.6%). Sound field thresholds improved from an average 4PTASF of 64.1 dB HL (SD 9.8 dB HL) to 37.0 dB HL (SD 8.9 dB HL), resulting in a mean functional gain of 27.1 dB. There was no significant difference in WRS or functional gain between the coupler types. Conclusion Initial experience shows that all three third generation vibroplasty couplers represent safe and efficient attachment options for the FMT allowing the surgeon to choose the coupling type based on the present pathology.

Details

ISSN :
14344726 and 09374477
Volume :
278
Database :
OpenAIRE
Journal :
European Archives of Oto-Rhino-Laryngology
Accession number :
edsair.doi.dedup.....1303a4e0c86dc9f1cb2af5a671c09f7a
Full Text :
https://doi.org/10.1007/s00405-020-06064-x