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Dejaco D, Riedl D, Gottfried TM, Santer M, Runge A, Seebacher J, Zelger P, Lia B, Joachim S. The influence of intraoperative auditory brainstem responses on vibroplasty coupling-quality and analysis of the impact of different fixation steps on the coupling. Eur Arch Otorhinolaryngol 2024; 281:141-151. [PMID: 37442819 PMCID: PMC10764396 DOI: 10.1007/s00405-023-08103-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023]
Abstract
PURPOSE The Vibrant Soundbridge (VSB) is an established active-middle-ear-implant for patients with moderate-to-profound hearing-loss. This surgery is referred to as "Vibroplasty". Sufficient transfer of the VSB's floating-mass-transducers (FMT) energy to the inner ear is a crucial factor influencing the coupling-quality (CQ). However, assessing CQ is hamper by two issues: the method of CQ-assessment itself and the method of FMT-fixation during Vibroplasty. METHODS This prospective study explored the influence of intraoperative auditory-brainstem-response (+ ABR) measurements and various fixation methods on postoperative CQ after Vibroplasty as compared to matched-patients after Vibroplasty without intraoperative ABR (-ABR). Propensity-score-matching was performed based on preoperative bone-conduction-pure-tone-average-3 (BC-PTA3) at 1-, 2- and 4 kHz. Primary outcome parameters were postoperative CQ-PTA3, intraoperative ABR threshold for various fixation methods and postoperative BC-PTA3. RESULTS A total of 28 patients were included, of which 14 were + ABR. Preoperative BC-PTA3, sex, age, and number of previous surgeries did not differ significantly between groups (all p > 0.301). Mean postoperative CQ-PTA3 was significantly better for + ABR (1.8 vs. 12.3 dB-HL; p = 0.006). Mean intraoperative ABR threshold was superior for cartilage-counter-bearing and cartilage-housing compared to additional fixation with injectable-platelet-rich- fibrin (53 vs. 56 & 57 dB-HL, respectively; p = 0.04; η2 = 0.33). Mean postoperative BC-PTA3 did not significantly differ between patients (41.4 vs. 41.8 dB-HL; p = 0.77). A total of 7% of the patients required intraoperative readjustment of the FMT based on unsatisfactory intraoperative ABR threshold. CONCLUSION Intraoperative ABR measurement resulted in significantly better postoperative CQ. Cartilage-counter-bearing and cartilage-housing were observed to have superior CQ. A total of 7% of the patients could be spared revision-Vibroplasty due to intraoperative ABR measurement.
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Affiliation(s)
- Daniel Dejaco
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - David Riedl
- Department of Medical Psychology, Medical University of Innsbruck, Schöpfstr. 23a, 6020, Innsbruck, Austria
| | - Timo Maria Gottfried
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Matthias Santer
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Annette Runge
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Josef Seebacher
- Department for Hearing, Speech and Voice Disorders, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Philipp Zelger
- Department for Hearing, Speech and Voice Disorders, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Bicego Lia
- MED-EL Elektromedizinische Geräte G.M.B.H., Fürstenweg 77a, 6020, Innsbruck, Austria
| | - Schmutzhard Joachim
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria.
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Graf L, Lochner J, Mojallal H, Arnold A, Honegger F, Stieger C. Comparison between incus short process and long process coupling of the vibrant soundbridge in human temporal bones. Int J Audiol 2023; 62:192-198. [PMID: 35174741 DOI: 10.1080/14992027.2022.2031317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The Vibrant Soundbridge (VSB) is one of the most widely used implantable hearing devices. It consists of a vibrating floating mass transducer (FMT) that is connected to a middle ear structure. The standard coupling devices for sensorineural hearing loss are short process (SP) or long process (LP) couplers. DESIGN AND STUDY SAMPLE This study directly compared the electro-mechanical performance of the SP- and LP-coupled FMT of the VSB in the same temporal bone specimen (n = 10). We measured velocity magnitudes and total harmonic distortions (THD) of the stapes (ST) and the round window (RW) using laser Doppler Vibrometry (LDV). RESULTS Comparison shows a maximally 10 dB higher magnitude for the LP coupler at ST and RW for frequencies below 600 Hz, whereas the SP coupler shows a maximally 20 dB higher magnitude at the ST and RW for frequencies above 600 Hz. THD show similar behaviour with less distortion at 500 Hz for the LP coupler and less distortions for the SP coupler in higher frequencies. CONCLUSIONS Our experiments showed that the SP coupling may be mechanically favourable, in terms of magnitude and distortion, for the transmission of FMT vibrations at higher frequencies.
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Affiliation(s)
- Lukas Graf
- ENT Department, University Basel Hospital, Basel, Switzerland
| | | | | | - Andreas Arnold
- ENT Department, Spital Münsingen, Münsingen, Switzerland.,ENT Department, Inselspital, University of Bern, Bern, Switzerland
| | - Flurin Honegger
- ENT Department, University Basel Hospital, Basel, Switzerland
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Lailach S, Zahnert T. Results and Quality of Life after Implantation of Active Middle Ear Implants. Laryngorhinootologie 2022; 101:S3-S35. [PMID: 35605611 DOI: 10.1055/a-1647-8616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The provision of implantable hearing aids represents an area with high development and innovation potential. On the one hand, this review article provides an overview of current indication criteria for the treatment with active middle ear implants. On the other hand, outcome parameters as well as functional results after implantation of active middle ear implants are demonstrated and discussed. The focus is mainly placed on audiological results as well as the subjective health status. "Patient Reported Outcome Measures" (PROMs) have become an integral part of the evaluation of hearing implant treatment. Due to low evidence level criteria, the study situation regarding audiological as well as subjective outcome parameters is not satisfactory. The lack of an international consensus on accepted outcome parameters makes a meta-analytical analysis of results immensely difficult. In the studies published to date, patients with sensorineural hearing loss and patients with conductive or mixed hearing loss offered better speech recognition after implantation of an active middle ear implant compared to conventional hearing aids. Current analyses show a significant improvement in general as well as hearing-specific quality of life after implantation of an active middle ear implant. To date, no validated, hearing-specific quality-of-life measurement instruments exist for assessing the success of fitting in children. Especially in children with complex malformations of the outer ear and the middle ear, excellent audiological results were shown. However, these results need to be substantiated by quality-of-life measurements in future.
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Affiliation(s)
- Susen Lailach
- Universitätsklinikum Dresden Klinik und Poliklinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie (Klinikdirektor: Prof. Dr.med. Dr. h.c. Thomas Zahnert) Dresden
| | - Thomas Zahnert
- Universitätsklinikum Dresden Klinik und Poliklinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie (Klinikdirektor: Prof. Dr.med. Dr. h.c. Thomas Zahnert) Dresden
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Grueninger I, Lippl L, Canis M, Simon F, Spiro JE, Spiegel JL, Hempel JM, Müller J, Volgger V. Anatomical Variations of the Epitympanum and the Usable Space for Middle Ear Implants Analyzed With CT-assisted Imaging Using a Tablet-based Software. Otol Neurotol 2022; 43:e454-e460. [PMID: 35213480 DOI: 10.1097/mao.0000000000003486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate interindividual anatomical variations of the epitympanum and the usable space for implantation of active middle ear implants (AMEI) as well as the usefulness of a tablet-based software to assess individual anatomy on computed tomography (CT) scans. PATIENTS CT scans of 126 patients, scheduled for cochlea implantation (50.8% men; 0.6-90.0 yr) without middle ear malformations or previous middle ear surgery and with slice thickness ≤0.7 mm were analyzed. MAIN OUTCOME MEASURES Since no standardized measurements to assess the size of the epitympanum are available, relevant distances were defined according to anatomical landmarks. Three independent raters measured these distances using a tablet-based software. Interrater correlation was computed to evaluate the quality of the measurement process. Descriptive data were analyzed for validation and for evaluation of interindividual anatomical variations. Influence of age and sex on the taken measurements was assessed. RESULTS No relevant correlation between age or sex and the anatomy of the epitympanum was found. Interrater correlation ranged from Spearman's ρ = 0.3-0.9 and there were significant differences between individual rater results for various combinations. Descriptive data revealed high interindividual anatomical variance of the epitympanum, especially regarding the distance between incus and skull base. CONCLUSION The reported descriptive data regarding the anatomy of the epitympanum emphasizes the importance of preoperative planning, especially since the height of the epitympanum showed great interindividual variance potentially limiting implantation of AMEIs. The herein used tablet-based software seems to be convenient for preoperative assessment of individual anatomy in the hand of otosurgeons.
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Affiliation(s)
- Ivo Grueninger
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilian University Munich, Germany
| | - Lisa Lippl
- MED-EL Medical Electronics GmbH, Innsbruck, Austria
| | - Martin Canis
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilian University Munich, Germany
| | - Florian Simon
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilian University Munich, Germany
| | - Judith E Spiro
- Department of Radiology, University Hospital, Ludwig Maximilian University Munich, Germany
| | - Jennifer L Spiegel
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilian University Munich, Germany
| | - John Martin Hempel
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilian University Munich, Germany
| | - Joachim Müller
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilian University Munich, Germany
| | - Veronika Volgger
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilian University Munich, Germany
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Dejaco D, Riedl D, Cassar AE, Gottfried T, Rasse T, Fischer N, Kreuzer-Simonyan A, Seebacher J, Riechelmann H, Keintzel T, Schmutzhard J. Modified Power Piston Versus Simultaneous Stapedotomy With Hearing Aids in Otosclerosis: A Follow-Up Study Exploring Speech Recognition, Quality of Life and Usage of Device. Otol Neurotol 2022; 43:429-436. [PMID: 35170556 PMCID: PMC8915993 DOI: 10.1097/mao.0000000000003514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To compare audiologic outcomes, quality-of-life (QoL) and usage-of-device (UoD) between case-matched, otosclerotic patients with mixed hearing loss (MHL) which received (a) stapedotomy and postoperative amplification with hearing aids (SDT+HA) or (b) short-incudial process coupled active middle ear implant with simultaneous stapedotomy (mPP). STUDY DESIGN, SETTING, AND PATIENTS Prospective, matched case-control, follow-up study conducted at two tertiary otologic referral centers. Eligible were all otosclerotic patients with MHL, which received mPP at either of the two institutions. A case-matched-cohort of SDT+HA-patients was generated from the hospitals database based on preoperative audiologic findings. MAIN OUTCOME MEASURES For sound- and speech perception, primary outcome parameters were the mean postoperative, aided air-conduction pure tone average (mpa-AC-PTA) and word recognition score at 80 dB speech level (mpa-WRS), for QoL the mean Nijmegen-Cochlear-Implant-Questionnaire (NCIQ) total-score, and for UoD the mean score rated on a 10-point Likert-scale. RESULTS A total of 28 patients were included; 14 received mPP; mpa-AC-PTA and mpa-WRS significantly improved from 47.1 dB-HL to 34.3 dB-HL (-12.8 dB-HL; p < 0.001) and from 75.0% to 93.2% (+18.2%; p = 0.002) compared to 46.5 dB-HL to 31.9 dB-HL (-14.8 dB-HL; p < 0.008) and 75.0% to 93.2% (+18.2%; p = 0.002) for SDT+HA. No significant difference between groups was observed (all p > 0.1). NCIQ total-score between groups did not significantly differ (70.4 vs. 69.9; p = 0.93). UoD for mPP was significantly higher (6.1 vs. 3.0; p < 0.001). CONCLUSIONS If medical/technical problems prevent usage of HA in otosclerosis with MHL, mPP can be considered as effective treatment option with similar audiological outcome and QoL. A significantly higher UoD for mPP was observed.
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Affiliation(s)
- Daniel Dejaco
- Department of Otorhinolaryngology – Head and Neck Surgery, Medical University of Innsbruck
| | - David Riedl
- Department of Medical Psychology, Medical University of Innsbruck, Innsbruck
| | - Anna Elisabeth Cassar
- Department of Otorhinolaryngology – Head and Neck Surgery, Medical University of Innsbruck
| | - Timo Gottfried
- Department of Otorhinolaryngology – Head and Neck Surgery, Medical University of Innsbruck
| | - Thomas Rasse
- Department of Otorhinolaryngology – Klinikum Wels-Grieskirchen, Wels
| | - Natalie Fischer
- Department of Otorhinolaryngology – Head and Neck Surgery, Medical University of Innsbruck
| | - Armina Kreuzer-Simonyan
- Department for Hearing, Speech and Voice Disorders, Medical University of Innsbruck, Innsbruck, Austria
| | - Josef Seebacher
- Department for Hearing, Speech and Voice Disorders, Medical University of Innsbruck, Innsbruck, Austria
| | - Herbert Riechelmann
- Department of Otorhinolaryngology – Head and Neck Surgery, Medical University of Innsbruck
| | - Thomas Keintzel
- Department of Otorhinolaryngology – Klinikum Wels-Grieskirchen, Wels
| | - Joachim Schmutzhard
- Department of Otorhinolaryngology – Head and Neck Surgery, Medical University of Innsbruck
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Fröhlich L, Müller A, Kropp MH, Mir-Salim P, Dziemba O, Oberhoffner T, Plontke SK, Rahne T. Active Middle Ear Implant Evoked Auditory Brainstem Response Intensity-Latency Characteristics. Front Neurol 2022; 12:739906. [PMID: 35126279 PMCID: PMC8810535 DOI: 10.3389/fneur.2021.739906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 12/16/2021] [Indexed: 11/21/2022] Open
Abstract
Objective To analyze intensity-latency functions of intraoperative auditory evoked brainstem responses (ABRs) to stimulation by the Vibrant Soundbridge (VSB) active middle ear implant with respect to coupling efficiency, VSB evoked ABR thresholds, and coupling modality [oval window (OW) placement vs. Incus placement and vs. round window (RW) placement]. Study Design Exploratory study. Setting Bi-centric study at tertiary referral centers. Patients Twenty-four patients (10 female, 14 male, mean age: 58 years) who received a VSB. Outcome Measures Wave-V intensity-latency functions of intraoperative VSB evoked ABRs using a modified audio processor programmed to preoperative bone conduction thresholds for stimulation. Threshold level correction to coupling efficiency and ABR thresholds. Individual plots and exponential function fits. Results After ABR threshold level correction, the latency functions could be aligned. A large variance of latencies was observed at individual threshold level. Wave-V latency was longest in the Incus placement subgroup (9.73 ms, SD: 1.04) as compared to OW placement subgroup (9.47 ms, SD: 1.05), with the shortest latency in the RW placement subgroup (8.99 ms, SD: 0.68). For increasing stimulation levels, the variance decreased with intensity-latency function slopes converging toward a steady-state (saturation) latency caused by saturation of audio processor (stimulation) gain. Latency saturation was reached at a stimulation level of 50 dB nHL for the OW placement subgroup, 35 dB nHL for the Incus placement subgroup, and 30 dB nHL for the RW placement subgroup. The latency and saturation results indicated decreased dynamic range for RW placement, i.e., reverse stimulation. Conclusions VSB evoked ABR wave-V intensity-latency function slopes were similar to acoustic stimulation at high stimulation levels with a shift toward longer latencies caused by audio processor signal delay. Saturation of latencies occurred for higher stimulation levels due to saturation of audio processor gain. Thus, the analysis of VSB evoked intensity-latency functions appears to allow for the objective assessment of a patient's individual dynamic range. This can further improve diagnostics as well as intraoperative and postoperative quality control.
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Affiliation(s)
- Laura Fröhlich
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, Halle, Germany
- *Correspondence: Laura Fröhlich
| | - Alexander Müller
- Department of Otorhinolaryngology, Head and Neck Surgery, Friedrichshain Clinic, Vivantes Hearing Center, Berlin, Germany
| | - Miriam H. Kropp
- Department of Otorhinolaryngology, Head and Neck Surgery, Friedrichshain Clinic, Vivantes Hearing Center, Berlin, Germany
| | - Parwis Mir-Salim
- Department of Otorhinolaryngology, Head and Neck Surgery, Friedrichshain Clinic, Vivantes Hearing Center, Berlin, Germany
| | - Oliver Dziemba
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medicine of Greifswald, Greifswald, Germany
| | - Tobias Oberhoffner
- Department of Otorhinolaryngology, Head and Neck Surgery “Otto Körner”, Rostock University Medical Center, Rostock, Germany
| | - Stefan K. Plontke
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Torsten Rahne
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, Halle, Germany
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Grueninger I, Canis M, Spiegel JL, Müller J. Combination of Direct Oval Window Vibroplasty With Customized Partial Ossicular Replacement Prosthesis (PORP): A Novel Reconstruction Technique to Rehabilitate Mixed Hearing Loss. Otol Neurotol 2021; 42:1507-1514. [PMID: 34267101 DOI: 10.1097/mao.0000000000003278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Hearing rehabilitation with an active middle ear implant (AMEI) in patients with mixed hearing loss (MHL) after multiple ear surgeries is surgically challenging and requires individual solutions in some cases. Our objective was to introduce a feasible novel technique for direct oval window vibroplasty (OW vibroplasty) using a partial ossicular replacement prosthesis (PORP) to ensure stability and enable active and passive sound transmission. DESIGN Four patients with MHL following multiple middle ear surgeries and indication for an AMEI received direct OW vibroplasty in combination with a customized PORP between the enwrapped actuator and reconstructed tympanic membrane (TM). RESULTS Postoperative bone conduction was stable in all patients. All patients benefitted from the AMEI in combination with PORP with a mean functional gain of 31.5 ± 17.0 dB. Mean aided postoperative pure tone average was 27.3 ± 2.6 dB. Speech discrimination in quiet at 65 dB with the German Language Freiburg Monosyllabic Test improved for all patients to 68.8 ± 6.3% and in noise with the German Language Oldenburger Sentence Test to -10.4 ± 3.3 dB SNR. No complications were observed. CONCLUSIONS This novel technique of direct OW vibroplasty extends the portfolio of reconstructive middle ear procedures by combining an intraoperatively customized "off-the-shelf" PORP as a coupler between floating mass transducer (FMT) and a cartilage TM. We found satisfying functional hearing results. Benefits of the reported technique comprise 1) stabilization and optimized coupling of the reconstruction, 2) possibility of passive sound transmission, 3) general feasibility due to great availability of a regular PORP, and 4) flexibility in bridging of large gaps between TM and actuator.
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Affiliation(s)
- Ivo Grueninger
- Department of Otorhinolaryngology, University Hospital, LMU Munich, Munich, Germany
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Edlinger SH, Hasenzagl M, Schoerg P, Muck S, Magele A, Sprinzl GM. Long-Term Safety and Quality of Life after Vibroplasty in Sensorineural Hearing Loss: Short/Long Incus Process Coupler. Audiol Neurootol 2021; 27:175-183. [PMID: 34044387 DOI: 10.1159/000516144] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/17/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The study shows the long-term effectiveness, safety, and quality of life after Vibrant Soundbridge (VSB) implantation in sensorineural hearing loss (SNHL) using the short process coupler (SP) or the long process coupler (LP). METHODS This retrospective study evaluated 77 VSB cases. Follow-up (F/U) time-dependent objective measurements (audiological outcomes), subjective data collection (quality-of-life questionnaire), and safety measures are presented. RESULTS Sixty-two ears were included in the analysis with up to 116 months of postsurgical F/U data (mean 32.15 ± 37.97 months LP and SP coupler). Fifty-three ears (13 bilateral cases) received the LP coupler and 9 subjects the SP coupler. The post-operative bone conduction thresholds remained stable and, in both groups, <10 dB. The benefit in word recognition scores measured at 65 dB SPL and 80 dB SPL showed no significant difference between the couplers (p = 0.559 and p = 0.088, respectively). The functional gain was not significantly different (p > 0.05) with a mean of 20.91 ± 9.77 and 17.19 ± 5.75 for LP and SP coupler, respectively. The utility score deciphered from the Assessment of Quality-of-life Questionnaire-8 dimensions revealed a mean score of 0.75 ± 0.16 which is not significantly different to the age- and sex-matched healthy control group with 0.81 ± 0.02 (p = 0.3547). CONCLUSION The Incus Vibroplasty utilizing both couplers is a safe and effective method to treat mild-to-severe SNHL. Both fixation methods of the floating mass transducer exhibit good clinical and audiological outcomes with high patient quality of life. The SP coupling method can be a good alternative when the long process is anatomically inaccessible, or the approach is limited due to anatomical reasons.
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Affiliation(s)
- Stefan Herwig Edlinger
- Department of Otorhinolaryngology, University Hospital St. Pölten, St. Poelten, Austria.,Karl Landsteiner University of Health Sciences, Krems, Austria
| | - Martin Hasenzagl
- Department of Otorhinolaryngology, University Hospital St. Pölten, St. Poelten, Austria
| | - Philipp Schoerg
- Department of Otorhinolaryngology, University Hospital St. Pölten, St. Poelten, Austria.,Karl Landsteiner University of Health Sciences, Krems, Austria
| | - Stefanie Muck
- Department of Otorhinolaryngology, University Hospital St. Pölten, St. Poelten, Austria
| | - Astrid Magele
- Department of Otorhinolaryngology, University Hospital St. Pölten, St. Poelten, Austria.,Karl Landsteiner University of Health Sciences, Krems, Austria
| | - Georg Mathias Sprinzl
- Department of Otorhinolaryngology, University Hospital St. Pölten, St. Poelten, Austria.,Karl Landsteiner University of Health Sciences, Krems, Austria
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Li J, Wang D, Zhao C, Yang L, Ren R, Zhao S. A retrofacial approach of round window vibroplasty during Vibrant Soundbridge implantation for patients with congenital ear malformation. Int J Pediatr Otorhinolaryngol 2021; 142:110600. [PMID: 33412340 DOI: 10.1016/j.ijporl.2020.110600] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/26/2020] [Accepted: 12/27/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To describe the specific retrofacial surgical approach for application of Vibrant Soundbridge (VSB) to the round window (RW) in patients with congenital ear malformation. METHODS Four patients with congenital ear malformation were implanted with VSB unilaterally through a retrofacial approach in present study. During the operation, the round window niche was identified through a retrofacial pathway and the floating mass transducer (FMT) was attached to the RW inferiorly. RESULTS Satisfied outcomes were confirmed after surgery. No intraoperative or postoperative surgical complications were observed in all patients. CONCLUSION When the facial nerve was aberrant or it was unable to access the RW through the classic facial recess pathway during the round window vibroplasty, the retrofacial approach could be a valid and feasible alternative approach.
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Affiliation(s)
- Jie Li
- Beijing Tongren Hospital, and the Key Laboratory of Otolarygology-Head and Neck Surgery, Capital Medical University, Beijing, China, 100730; The Department of Otolarygology-Head and Neck Surgery, Fuxing Hospital, Capital Medical University, Beijing, China, 100038
| | - Danni Wang
- Beijing Tongren Hospital, and the Key Laboratory of Otolarygology-Head and Neck Surgery, Capital Medical University, Beijing, China, 100730
| | - Chunli Zhao
- Beijing Tongren Hospital, and the Key Laboratory of Otolarygology-Head and Neck Surgery, Capital Medical University, Beijing, China, 100730
| | - Lin Yang
- Beijing Tongren Hospital, and the Key Laboratory of Otolarygology-Head and Neck Surgery, Capital Medical University, Beijing, China, 100730
| | - Ran Ren
- Beijing Tongren Hospital, and the Key Laboratory of Otolarygology-Head and Neck Surgery, Capital Medical University, Beijing, China, 100730
| | - Shouqin Zhao
- Beijing Tongren Hospital, and the Key Laboratory of Otolarygology-Head and Neck Surgery, Capital Medical University, Beijing, China, 100730.
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Warnholtz B, Schär M, Cuny P, Sonntag K, Beutner D, Dobrev I, Röösli C, Sim JH. A New Stapes-Head Coupler for the Vibrant Soundbridge System. Audiol Neurootol 2021; 26:287-294. [PMID: 33647905 DOI: 10.1159/000512600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 10/12/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION The Vibrant Soundbridge (MED-EL Medical Electronics, Austria) is an active middle ear implant with a floating mass transducer (FMT) for patients with conductive, sensorineural, or mixed hearing loss. While the FMT is vertically aligned above the stapes head (SH) with the current Vibroplasty Clip coupler (MED-EL Medical Electronics), the new SH coupler was developed to mount the FMT on the inferior side of the stapes and to fit in the reduced middle ear space after canal-wall-down mastoidectomy. METHODS Using 11 human cadaveric temporal bones (TBs), placements of the new SH couplers on the stapes were examined, and effective stimuli to the cochlea were evaluated by measuring piston-like motion of the stapes footplate with a current of 1 mA on the FMT. The results were assessed in comparison with the Vibroplasty Clip coupler. RESULTS The new SH coupler showed perfect coupling on the stapes in 9 out of 11 TBs. A small gap between the SH and the plate of the connection link part was unavoidable in 2 TBs but had negligible effect on vibrational motion of the stapes. Vibrational motion of the stapes with the new SH coupler was reduced at frequencies above 3 kHz compared to the corresponding motion with the current Vibroplasty Clip coupler, but the relative attenuation over all 11 cadaveric temporal bones was <10 dB. CONCLUSIONS The new SH coupler provides an alternative with more stable fixation when placement of the current Vibroplasty Clip coupler is limited due to insufficient space after canal-wall-down mastoidectomy, while still delivering effective stimuli to the cochlea.
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Affiliation(s)
- Birthe Warnholtz
- Department of Otolaryngology, Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland.,Department of Otolaryngology, Head and Neck Surgery, University of Zürich, Zürich, Switzerland
| | - Merlin Schär
- Department of Otolaryngology, Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland.,Department of Otolaryngology, Head and Neck Surgery, University of Zürich, Zürich, Switzerland
| | - Pascale Cuny
- Department of Otolaryngology, Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland.,Department of Otolaryngology, Head and Neck Surgery, University of Zürich, Zürich, Switzerland
| | | | - Dirk Beutner
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Göttingen, Göttingen, Germany
| | - Ivo Dobrev
- Department of Otolaryngology, Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland.,Department of Otolaryngology, Head and Neck Surgery, University of Zürich, Zürich, Switzerland
| | - Christof Röösli
- Department of Otolaryngology, Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland.,Department of Otolaryngology, Head and Neck Surgery, University of Zürich, Zürich, Switzerland
| | - Jae Hoon Sim
- Department of Otolaryngology, Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland, .,Department of Otolaryngology, Head and Neck Surgery, University of Zürich, Zürich, Switzerland,
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11
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Schraven SP, Dohr D, Weiss NM, Mlynski R, Dalhoff E. [Laser Doppler vibrometric measurements on human temporal bones]. HNO 2021; 69:491-500. [PMID: 33566127 DOI: 10.1007/s00106-021-00995-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2020] [Indexed: 11/30/2022]
Abstract
Laser Doppler vibrometric (LDV) measurements on human temporal bones represent the standard method for predicting the performance of active middle ear implants (AMEI) and are used as preclinical tests in the development, approval process, and indication expansion of AMEI. The quality of the coupling of the floating mass transducer to the mobile structures of the middle ear is decisive for the performance of the implant and patients' hearing perception. The cochlea can be stimulated via the oval window (forward stimulation) or the round window (reverse stimulation). For forward stimulation, the ASTM standard F2504-05 defines a method to ensure physiologically normal properties of the temporal bones used in the experiments. For reverse stimulation, which depends even more critically on the quality of the temporal bone, a comparable standard method is lacking. Appropriate preparation and storage of the human petrous bone as well as suitable LDV test setups with respect to calibration and reproducibility of measuring positions and angles provide results that allow a comparison of different types of coupling and also correlate well with clinical data.
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Affiliation(s)
- S P Schraven
- Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie "Otto Körner", Doberaner Straße 137-139, 18057, Rostock, Deutschland.
| | - D Dohr
- Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie "Otto Körner", Doberaner Straße 137-139, 18057, Rostock, Deutschland
| | - N M Weiss
- Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie "Otto Körner", Doberaner Straße 137-139, 18057, Rostock, Deutschland
| | - R Mlynski
- Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie "Otto Körner", Doberaner Straße 137-139, 18057, Rostock, Deutschland
| | - E Dalhoff
- Sektion für Physiologische Akustik und Kommunikation, Universitäts-HNO-Klinik Tübingen, Tübingen, Deutschland
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12
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Abstract
Active middle ear implants or implantable hearing aids are used to treat sensorineural or combined hearing loss. Their coupling to the middle ear structures has a large impact on the success of rehabilitation. Practical issues such as the coupling site, influence of middle ear status, and forward and backward excitation of the inner ear are discussed in the context of biomechanics. For this purpose, experimental studies, model simulations, and current literature data are evaluated. The explanations are intended to contribute to a better understanding of certain procedures in hearing rehabilitation with active implants.
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13
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Rahne T, Skarzynski PH, Hagen R, Radeloff A, Lassaletta L, Barbara M, Plontke SK, Mlynski R. A retrospective European multicenter analysis of the functional outcomes after active middle ear implant surgery using the third generation vibroplasty couplers. Eur Arch Otorhinolaryngol 2020; 278:67-75. [PMID: 32451668 PMCID: PMC7814408 DOI: 10.1007/s00405-020-06064-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 05/15/2020] [Indexed: 11/28/2022]
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.
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Affiliation(s)
- Torsten Rahne
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle (Saale), Halle (Saale), Germany.
| | - Piotr Henryk Skarzynski
- Department of Teleaudiology and Screening, World Hearing Center, Institute of Physiology and Pathology of Hearing, Warsaw, Poland.,Heart Failure and Cardiac Rehabilitation Department, 2nd Faculty of Medicine, Medical University of Warsaw, Warsaw, Poland.,Institute of Sensory Organs, Kajetany, Poland
| | - Rudolf Hagen
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Würzburg, Würzburg, Germany
| | - Andreas Radeloff
- Department of Otorhinolaryngology, University of Oldenburg, Oldenburg, Germany
| | - Luis Lassaletta
- Department of Otolaryngology, La Paz University Hospital, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER-U761), Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, Spain
| | - Maurizio Barbara
- NESMOS Department, Otorhinolaryngology Clinic, University Hospital Sant'Andrea, Sapienza University, Rome, Italy
| | - Stefan K Plontke
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle (Saale), Halle (Saale), Germany
| | - Robert Mlynski
- Department of Otorhinolaryngology, Head and Neck Surgery "Otto Körner", University Medical Center Rostock, Rostock, Germany
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14
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Direct Drive Simulation-Preoperative Sound Simulation of "Vibroplasty-Hearing" in Patients With Mixed Hearing Loss. Otol Neurotol 2020; 41:494-503. [PMID: 32176137 DOI: 10.1097/mao.0000000000002572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Validation of the preoperative sound simulation test for vibroplasty-hearing so-called "Direct Drive Simulation" (DDS) in case of mixed hearing loss. STUDY DESIGN Retrospective data analysis. SETTING Tertiary referral center with a large hearing implant program. MAIN OUTCOME MEASURE Comparison of sound impression during preoperative Direct Drive Simulation, and postoperative testing with the activated active middle ear implant (AMEI) under free-field condition and in daily routine. PATIENTS Fifty-four data sets from 18 patients with mixed hearing loss with a mean age of 60.78 ± 3.18 were included. RESULTS Comparing the sound impression during DDS preoperatively versus free-field testing with the implanted AMEI, no significant differences were found. DDS offers a slightly better sound quality than the AMEI in daily routine, fitting well to the ideal listening situation in DDS versus some background noise in daily routine. CONCLUSION The DDS offers the possibility of a realistic preoperative sound simulation of the "vibroplasty-hearing" in cases of mixed hearing loss. This probably facilitates patient's decision towards a vibroplasty. The audiologist as well as the surgeon get additional information regarding the indication especially when audiologic inclusion criteria are critical. Thus, the DDS is a useful extension of preoperative diagnostics before vibroplasty.
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Modified-Power-Piston: Short-Incudial-Process-Vibroplasty and Simultaneous Stapedotomy in Otosclerosis. Otol Neurotol 2020; 40:292-300. [PMID: 30694983 PMCID: PMC6380439 DOI: 10.1097/mao.0000000000002146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE If mixed-hearing-loss (MHL) occurs in otosclerosis, hearing-aids (HA) in addition to conventional-stapedotomy (SDT) may be necessary. If otosclerosis progresses or technical or medical problems prevent use of HA, combining active-middle-ear-implants (AMEI) with SDT ("power-piston") may be considered. Previously, AMEI-coupling to the long-incudial-process was suggested. Here, a "modified-power-piston" surgery (mPP) coupling to the short-incudial-process was proposed, so no coupling over the positioned stapes-piston is required. We questioned whether mPP is as safe and effective as SDT. METHODS Otosclerotic patients with MHL and limited satisfaction with previously worn HA receiving mPP were retrospectively reviewed at two Austrian tertiary otologic referral centers. Patients, receiving stapedotomy, were case-matched for preoperative pure-tone averages (PTA), bone-conduction (BC-PTA), air-conduction (AC-PTA), and air-bone gap (ABG-PTA). Postoperative changes in BC-PTA and in AC-PTA and ABG-PTA were defined as safety- and as efficacy outcome parameter. RESULTS Of 160 patients, 14 received mPP and 14 stapedotomy. Preoperative findings were comparable (all p = 1.000). BC-PTA improved from 38.0 to 36.7 and from 37.1 to 36.9 dB-HL for mPP and SDT, respectively (Δ -1.3 versus -0.2 dB-HL; p = 0.077). AC-PTA improved from 66.8 to 47.1 and from 66.3 to 46.5 dB-HL for mPP and SDT, respectively (Δ -19.6 versus -19.7 dB-HL; p = 0.991). ABG-PTA improved from 28.8 to 10.4 and from 29.1 to 9.6 dB-HL for mPP and SDT, respectively (Δ -18.3 versus -19.5 dB-HL; p = 0.771). CONCLUSION In otosclerosis with MHL and limited satisfaction with HA, mPP appeared as safe and effective as SDT and may be considered a treatment alternative in these patients.
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Long-Term Stability and Functional Outcome of an Active Middle Ear Implant Regarding Different Coupling Sites. Otol Neurotol 2019; 41:60-67. [PMID: 31746816 DOI: 10.1097/mao.0000000000002418] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Indication and implantation of active middle ear implants (AMEI) are well established. Choice of the coupling site depends from the individual anatomical situation. Long-term stability of different coupling sites in terms of functional outcome and complications are rare and were investigated in this study. DESIGN Retrospective analysis of 41 consecutive patients (45 ears) with coupling of the AMEI at the incus, stapes, and round window. Analysis of preoperative, postoperative, and long-term results of pure-tone average, speech discrimination in quiet at 65 dB (German language Freiburg Monosyllabic Test) and noise (German language Oldenburger Sentence Test), rate of revision surgeries as well as explantations and the novel parameter patient years (py). RESULTS Mean of follow-up was 3.0 ± 1.7 years resulting in a total of 135.6 py. Bone conduction was stable in all patients pre- to postoperatively as well as preoperatively to the long-term. Round window patients had the broadest air-bone gap (31.4 ± 19.4 dB HL) benefitting the most from the AMEI (functional gain = 39.0 ± 12.8 dB HL). Regarding speech discrimination, incus patients performed the best both in quiet (77.7 ± 22.8%) and noise (3.4 ± 2.9 dB SNR). In terms of revision surgery and explantations, round window patients exhibited the highest rates (20%). CONCLUSIONS Regarding all coupling sites, satisfying long-term stability results and comparable complication rates were reported with best performance of coupling to the incus. Implementation of patient years might be a novel parameter for the comparison of revisions and explantations.
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Burian A, Gerlinger I, Toth T, Piski Z, Rath G, Bako P. Stapedotomy with incus vibroplasty - A novel surgical solution of advanced otosclerosis and its place among existing therapeutic modalities - Hungarian single institutional experiences. Auris Nasus Larynx 2019; 47:55-64. [PMID: 31079859 DOI: 10.1016/j.anl.2019.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 03/31/2019] [Accepted: 04/18/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To delineate the advantages and steps of stapedotomy with incus vibroplasty, to assess the safety and efficacy of this method via the authors' experiences, and to overview the literature regarding other surgical options in advanced otosclerosis determining the place of stapedotomy with incus vibroplasty in the therapeutic range. METHODS Four patients were enrolled in the study presenting severe mixed hearing loss of at least one side on pure tone audiometry. Based on complementary audiological examinations including stapedial reflex test and multifrequency tympanometry, all cases were suspected as advanced otosclerosis. Stapedotomy with incus vibroplasty - the combination of laser stapedotomy and simultaneous Vibrant Soundbridge implantation - was performed in each patient. Preoperative pure tone average, speech recognition thresholds and word recognition scores were compared to one-year postoperative free-field values with the implant switched on focusing on functional gain. RESULTS Among 4 participants (3 females, 1 male) the mean age (SD) was 66 years (35). In three cases Nitinol, in one case NitiBond piston was inserted. One-year postoperative free-field functional gains were 30 dB, 34 dB, 42 dB and 51 dB, respectively. One-year postoperative free-field speech recognition thresholds were 45 dB, 45 dB, 49 dB and 50 dB, respectively, while word recognition scores were 70%, 70%, 70% and 75%, respectively. CONCLUSION Postoperative results in our serie regarding pure tone average and word recognition score proved to be better than those found in the literature. Stapedotomy with incus vibroplasty - through sufficient air-bone gap closure and simultaneous sensorineural component management - seems to be a promising surgical solution in advanced otosclerosis, requiring further investigation.
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Affiliation(s)
- Andras Burian
- University of Pécs, Department of Otorhinolaryngology, Pécs, 7621, Munkácsy M Str 2, Hungary.
| | - Imre Gerlinger
- University of Pécs, Department of Otorhinolaryngology, Pécs, 7621, Munkácsy M Str 2, Hungary.
| | - Tamas Toth
- University of Pécs, Department of Otorhinolaryngology, Pécs, 7621, Munkácsy M Str 2, Hungary.
| | - Zalan Piski
- University of Pécs, Department of Otorhinolaryngology, Pécs, 7621, Munkácsy M Str 2, Hungary.
| | - Gabor Rath
- University of Pécs, Department of Paediatrics, 7623, Pécs, József Attila Str 7, Hungary.
| | - Peter Bako
- University of Pécs, Department of Otorhinolaryngology, Pécs, 7621, Munkácsy M Str 2, Hungary.
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19
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An alternative approach to mixed hearing loss in otosclerosis: stapes surgery combined with an active middle-ear implant. The Journal of Laryngology & Otology 2018; 132:457-460. [PMID: 29891017 DOI: 10.1017/s0022215118000105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To report a novel management strategy for mixed hearing loss in advanced otosclerosis. METHODS A 50-year-old male was referred to St Thomas' Hearing Implant Centre with otosclerosis; he was no longer able to wear conventional hearing aids because of recurrent otitis externa. The patient underwent short process incus vibroplasty (using the Med-El Vibrant Soundbridge device), followed at a suitable interval (six weeks) by stapes surgery. The main outcome measures were: pure tone audiometry, functional gain and monosyllabic word recognition scores. RESULTS Post-operative pure tone audiometry showed a reduction of the mean air-bone gap from 55 dB HL to 20 dB HL. The residual mixed hearing loss was rehabilitated with the Vibrant Soundbridge, with an average device gain of 32 dB. The monosyllabic word recognition scores in quiet at 65 dB improved from 37 to 100 per cent when using the Vibrant Soundbridge at six months after switch-on of the device. CONCLUSION Stapedotomy in conjunction with incus short process vibroplasty (i.e. inner-ear vibroplasty) is a safe and promising procedure for managing advanced otosclerosis with mixed hearing loss in selected patients.
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Audiologic Gain of Incus Short Process Vibroplasty With Conventional Incus Long Process Vibroplasty: A Retrospective Analysis of 36 Patients. Otol Neurotol 2017; 38:1063-1070. [DOI: 10.1097/mao.0000000000001496] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Importance of adhesiolysis in revision surgery for vibrant soundbridge device failures at the short incus process. Eur Arch Otorhinolaryngol 2017; 274:3867-3873. [DOI: 10.1007/s00405-017-4715-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 08/11/2017] [Indexed: 12/16/2022]
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Vibroplasty in Severe Congenital or Acquired Meatal Stenosis by Coupling an Active Middle Ear Implant to the Short Process of the Incus. Otol Neurotol 2017; 38:996-1004. [DOI: 10.1097/mao.0000000000001459] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Chen T, Ren LJ, Yin DM, Li J, Yang L, Dai PD, Zhang TY. A comparative study of MED-EL FMT attachment to the long process of the incus in intact middle ears and its attachment to disarticulated stapes head. Hear Res 2017; 353:97-103. [PMID: 28666703 DOI: 10.1016/j.heares.2017.06.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 06/11/2017] [Accepted: 06/13/2017] [Indexed: 01/10/2023]
Abstract
The Vibrant Soundbridge© (VSB) active middle-ear implant provides an effective treatment for mild-to-severe sensorineural hearing loss in the case of normal middle ear anatomy and mixed hearing loss in middle ear malformation. The VSB floating mass transducer (FMT), with proper couplers, can be installed on various structures of the ossicular chain, e.g., the short and long process of the incus, the stapes head, and the stapes footplate. A long process (LP) coupler is most commonly used for FMT attachment to the long process of the incus with intact ossicular chain, while CliP and Bell couplers are two standardized and reliable methods for FMT attachment to the stapes head with missing incus and malleus. However, the difference and relationship of the vibration properties among these three FMT couplers remain unclear. In the present study, the stapes footplate velocity responses of the LP, CliP, and Bell couplers have been investigated in eight fresh temporal bones (TBs) to evaluate the vibration properties of these three couplers. Normal and reconstructed middle ear transfer functions (METFs) were determined from laser Doppler vibrometer (LDV) measurements. A mastoidectomy and a posterior tympanotomy were performed to expose the ossicular chain. The METFs of the normal middle ear and middle ear with LP-FMT-coupler were compared under acoustic stimulation, thus the mass effect of the FMT with LP coupler was evaluated. Additional comparisons were made between the stapes footplate vibrations of the LP-FMT-coupler (with the intact ossicular chain at the long process of the incus), CliP-FMT-coupler and Bell-FMT-coupler on the stapes head (after incus and malleus removed) under active electromechanical stimulation. After the installation of CliP-FMT-coupler and Bell-FMT-coupler to the middle ear, the average velocity amplitude of the stapes footplate, comparing to the LP-FMT-coupler, was about 15 dB higher between 1 and 6 kHz, and 10 dB lower at about 0.5 kHz. Quantitatively, there was no significant difference between the CliP-FMT-coupler and Bell-FMT-coupler. According to our study, installation of CliP-FMT-coupler or Bell-FMT-coupler on the stapes head provides considerable improvement of the middle ear mechanical and functional responses, comparing with the LP-FMT-coupler in the temporal bone experiments. Moreover, the installation of the Bell-FMT-coupler to the stapes head produces essentially the same footplate velocity responses in comparison to the CliP-FMT-coupler.
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Affiliation(s)
- Tao Chen
- Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China
| | - Liu-Jie Ren
- Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China
| | - Dong-Ming Yin
- Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China
| | - Jia Li
- Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China; Department of Aeronautics and Astronautics, Fudan University, Handan Road 220, Shanghai 200433, China
| | - Lin Yang
- Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China; ENT Institute, Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China
| | - Pei-Dong Dai
- Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China; ENT Institute, Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China
| | - Tian-Yu Zhang
- Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China; ENT Institute, Eye & ENT Hospital of Fudan University, Fenyang Road 83, Shanghai 200031, China.
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Busch S, Lenarz T, Maier H. Comparison of Alternative Coupling Methods of the Vibrant Soundbridge Floating Mass Transducer. Audiol Neurootol 2017; 21:347-355. [DOI: 10.1159/000453354] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 11/08/2016] [Indexed: 11/19/2022] Open
Abstract
The active middle ear implant Vibrant Soundbridge© provides a variety of coupling modalities of the floating mass transducer (FMT) to various structures of the ossicular chain and the round window. A retrospective analysis was performed on 125 subjects (n = 137 ears) (1) to compare the efficacy of the different FMT coupling modalities with increasing degree of hearing loss, (2) to compare the performance in speech outcome and the effective gain between the coupling types, and (3) to evaluate the risk of additional hearing loss of each coupling procedure. The patients were grouped according to their type of FMT coupling into incus vibroplasty (incus group, n = 59), round window vibroplasty with coupler (RWC group, n = 23), round window vibroplasty without coupler (RW group, n = 22), and oval window vibroplasty with coupler (OWC group, n = 33). For each coupling group, pre- and postoperative thresholds, the results of the Freiburg monosyllable test at 65 dB SPL, and the effective gain across frequencies (0.5-6 kHz) were evaluated. A logistic regression function was used to describe the relationship between word recognition scores (WRS, in % correct) and the mean bone conduction (BC) hearing loss. The surgical procedure had no clinically relevant effect on BC thresholds of patients in each coupling group. The BC pure tone average (PTA4) for 50% WRS predicted by the model function was similar for the incus (48.2 dB nHL), RW (47.8 dB nHL), and OWC (49.0 dB nHL) groups, but higher for the RWC group (67.9 dB nHL). However, the median WRS was 80% or better with no significant differences in speech perception between coupling types (Kruskal-Wallis test, p = 0.229). The effective gain shows an advantage for the incus coupling between 0.5 and 2 kHz over the other coupling types. The performance of the FMT coupling modalities is equally good for patients with a mild-to-moderate hearing loss, but the efficacy of coupling types differs for patients with greater hearing loss (>48 dB BC HL).
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Schraven SP, Mlynski R, Dalhoff E, Heyd A, Wildenstein D, Rak K, Radeloff A, Hagen R, Gummer AW. Coupling of an active middle-ear implant to the long process of the incus using an elastic clip attachment. Hear Res 2016; 340:179-184. [DOI: 10.1016/j.heares.2016.03.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 03/23/2016] [Indexed: 10/22/2022]
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Active middle-ear implant fixation in an unusual place: clinical and audiological outcomes. The Journal of Laryngology & Otology 2016; 130:404-7. [PMID: 26991877 DOI: 10.1017/s0022215116000712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE The Vibrant Soundbridge is an active middle-ear implant for hearing rehabilitation that is usually placed in the long process of the incus or round window. This study reports on the unusual implant attachment to the short process of the incus in a patient with ear malformation, and describes their audiological and clinical outcomes. METHODS Case report and literature review. RESULTS Audiological evaluation with the Vibrant Soundbridge implant showed a pure tone average of 31 dB. The speech test, at 65 dB HL, revealed correct recognition of 92 per cent of disyllabic words. The Glasgow Hearing Aid Benefit Profile showed high levels of satisfaction, hearing aid use and benefit. CONCLUSION Fixation of the Vibrant Soundbridge implant on the short process of the incus is a feasible option, with good clinical and audiological outcomes. Coupling the floating mass transducer to the short process of the incus is a good surgical option, especially when the long process and the oval or round window are inaccessible.
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Mlynski R, Dalhoff E, Heyd A, Wildenstein D, Rak K, Radeloff A, Hagen R, Gummer AW, Schraven SP. Standardized Active Middle-Ear Implant Coupling to the Short Incus Process. Otol Neurotol 2016; 36:1390-8. [PMID: 26247138 DOI: 10.1097/mao.0000000000000822] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Active middle-ear implants with floating-mass transducer (FMT) technology are used to treat mild-to-severe sensorineural hearing losses. The standard surgical approach for incus vibroplasty is a mastoidectomy and a posterior tympanotomy, crimping the FMT to the long incus process. An alternative fixation side with less surgical trauma might be the short incus process and incus body.The aim of this study was to develop and test a short incus process coupling device for its functional properties in temporal bone preparations and clinical practice. MATERIALS AND METHODS An extended antrotomy and a posterior tympanotomy were performed in 10 fresh human temporal bones. As a control for normal middle-ear function, the tympanic membrane was stimulated acoustically, and the vibration of the stapes footplate was measured using laser Doppler vibrometry. FMT-induced vibration responses of the stapes were then measured for standard attachment at the long process and for 2 types of couplers designed for attachment at the short process of the incus (SP1 and SP2 coupler). Additionally, the functional outcome in 2 patients provided with an SP2 coupler was assessed postoperatively at 2 weeks, 3 months, and then 11 months, using pure-tone audiometry, auditory thresholds for frequency-modulated (warble) tones, vibroplasty thresholds, and speech audiometry in quiet and noise. RESULTS For the SP2 coupler, velocity-amplitude responses in temporal-bone preparations showed generally similar mean amplitudes as compared with the standard coupling of the FMT to the long process but with clearly increased mean amplitudes between 0.7 and 1.5 kHz and with reduced interindividual variation between 0.5 and 3 kHz. The clinical data of 2 patients with mild-to-severe sensory hearing loss showed good vibroplasty thresholds and convincing results for speech audiometry in quiet (Freiburger monosyllables at 65 dB SPL, 23 ± 31% unaided versus 83 ± 4% aided) and noise (Hochmair-Schulz-Moser-test at 65 dB SPL at 10 dB SNR, 32 ± 45% unaided and 42 ± 29% aided). CONCLUSION The attachment of the FMT to the short incus process with the SP2 coupler leads to good mechanical and functional coupling in an experimental setup and clinical practice.
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Affiliation(s)
- Robert Mlynski
- *Department of Otorhinolaryngology, Head and Neck Surgery "Otto Koerner" University Medical Center Rostock, Rostock; †Department of Otolaryngology, Section of Physiological Acoustics and Communication, University of Tübingen, Tübingen; and ‡Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, Comprehensive Hearing Center, University of Würzburg, Würzburg, Germany
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Original Solution for Middle Ear Implant and Anesthetic/Surgical Management in a Child with Severe Craniofacial Dysmorphism. Case Rep Otolaryngol 2015; 2015:205972. [PMID: 26491591 PMCID: PMC4602318 DOI: 10.1155/2015/205972] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 09/14/2015] [Indexed: 11/29/2022] Open
Abstract
We describe the novel solution adopted in positioning middle ear implant in a child with bilateral congenital aural atresia and craniofacial dysmorphism that have posed a significant challenge for the safe and correct management of deafness. A five-year-old child, affected by a rare congenital disease (Van Maldergem Syndrome), suffered from conductive hearing loss. Conventional skin-drive bone-conduction device, attached with a steel spring headband, has been applied but auditory restoration was not optimal. The decision made was to position Vibrant Soundbridge, a middle ear implant, with an original surgical application due to hypoplasia of the tympanic cavity. Intubation procedure was complicated due to child craniofacial deformities. Postoperative hearing rehabilitation involved a multidisciplinary team, showing improved social skills and language development.
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Abstract
HYPOTHESIS In situ evaluation of the vibration performance of a hybrid system for intracochlear fluid stimulation, constructed from a floating mass transducer (FMT) coupled to an electric acoustic stimulation (EAS) cochlea implant (CI) electrode. BACKGROUND EAS uses both CI technology to restore severe-to-profound hearing loss at high frequencies and acoustic amplification for mild-to-moderate hearing loss in the low-to-mid frequency range. More patients with residual hearing are becoming candidates for EAS surgery because of the improved techniques for hearing preservation. Most patients with partial deafness fulfill the audiological criteria at low and mid-frequencies for the active middle-ear implant with FMT (VSB). The FMT of the VSB is a potential device for acoustical stimulation in EAS. METHODS In seven fresh human temporal bones, stapes amplitude responses for fixation of a FMT to the long incus process (standard coupling) was compared with those for FMT fixation to a 20-mm inserted standard cochlea electrode array (31.5 mm) via the round window (Vibro-EAS). Vibration of the stapes footplate was measured by laser Doppler vibrometry. RESULTS For 0.316 Vrms drive voltage, stimulation of the intracochlear fluid using a FMT-driven CI electrode (Vibro-EAS) yielded stapes amplitude responses comparable to those for acoustic stimulation with 84 dB SPL. These amplitude responses are 30 to 42 dB lower at frequencies up to 4 kHz than those for VSB standard coupling. CONCLUSION Intracochlear combined electrical and mechanical stimulation may be a viable technique for electroacoustic stimulation. A reliable technique for attachment or integration of the FMT to the cochlea electrode array has yet to be developed.
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Braun K, Zenner HP, Friese N, Tropitzsch A. [Differential indication of active middle ear implants]. HNO 2015; 63:402-18. [PMID: 26054730 DOI: 10.1007/s00106-015-0018-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Hearing aids (HA) provide adequate support for many patients with hearing loss, but not all. Around one third of 10.000 patients provided with hearing aids in the Abbreviated Profile of Hearing Aid Benefit felt no actual benefit when using the hearing aid, although they demonstrated the necessary hearing improvement on speech audiometry. Epidemiological data show bad compliance, especially in older people. Only one in three hearing aid owners wears their device regularly. For this subpopulation of patients active middle ear implants (AMEIs) have been used since 1998. In the present review, the current indications for AMEIs are presented. MATERIAL AND METHODS A selective literature search in PubMed, as well as a guideline search at the Arbeitsgemeinschaft der Wissenschaftlichen Fachgesellschaften e. V. (German Association of Scientific Societies), was carried out. RESULTS The present review shows that when there is an adequate indication the hearing capacity of patients can be thoroughly rehabilitated and thus their quality of life improved with the help of AMEIs. Although most commercially available systems have a satisfactory risk profile, increased extrusion rates, malfunctioning and facial paresis have been reported in older implant series. The advantages of AMEIs include increased hearing gain, reduced feedback, increased hearing quality, increased speech discrimination in the presence of background noise, and an absence of occlusion. CONCLUSIONS The audiological indication for AMEIs in primary care is usually controversial, since the functional hearing gain and increase in speech discrimination may be small compared with modern conventional hearing aids. AMEIs thus play a main role in the secondary care of patients who do not have sufficient benefit or who have side effects after having a conventional hearing aid fitted.
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Affiliation(s)
- K Braun
- Kopf-Hals-Chirurgie, Plastische Operationen, Universitätsklinik für Hals-Nasen-Ohren-Heilkunde, Elfriede-Aulhorn-Str. 5, 72076, Tübingen, Deutschland,
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Abstract
Implantable hearing aids are gaining importance for the treatment of sensorineural hearing loss and also for mixed hearing loss. The various hearing aid systems, combined with different middle ear situations, give rise to a wide range of different reconstructions. This article attempts to summarize the current knowledge concerning the mechanical interaction between active middle ear implants (AMEIs) and the normal or reconstructed middle ear. Some basic characteristics of the different AMEIs are provided in conjunction with the middle ear mechanics. The interaction of AMEIs and middle ear and the influence of various boundary conditions are discussed in more detail.
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Abstract
OBJECTIVE To compare surgical methods, functional gain, and speech discrimination using two different coupling methods for an active middle ear implant. Of several couplers enabling placement of the active element at various locations, two function directly at a cochlear membrane, bypassing a missing or malformed ossicular chain. This study evaluates whether either of these methods is more beneficial. STUDY DESIGN Retrospective case review. SETTING ENT surgical clinic. PATIENTS Forty-seven German-speaking patients with moderate to severe mixed hearing loss. INTERVENTIONS Records of patients implanted with either a round window (RW) or oval window (OW) coupler and active implant were examined. Preoperative and postoperative bone and air-conduction thresholds, auditory gain, and speech perception were compared. MAIN OUTCOME MEASURES Functional gain, Freiburger monosyllables in quiet. RESULTS The range of hearing benefit shown by functional gain in patients implanted with the RW coupler (median) was between 22.5 dB (at 0.25 kHz) and 52.5 dB (2 and 3 kHz). In the OW group, improvement was similar, ranging from 21 dB (at 8 kHz) to 50 dB (1 and 2 kHz). Patients in both groups showed a similar improvement in speech recognition. Median preoperative unaided word recognition was 0% at 60 dB HL for both patient groups, improved postoperatively in both groups to median 85% correct at 65 dB HL and 95% at 80 dB HL. CONCLUSION Placement of an active middle ear implant using the RW and the OW coupler was found to be safe, although the surgical methods differ. Safety and efficacy of both couplers present no significant differences.
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