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Speed OE, Farsi S, Rickels K, Patel VA, Bareiss A, Dornhoffer J, Saadi RA. Auditory brainstem implants: an analysis of adverse events in the MAUDE database. Neurochirurgie 2024; 70:101570. [PMID: 38810538 DOI: 10.1016/j.neuchi.2024.101570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 05/31/2024]
Abstract
OBJECTIVE Auditory Brainstem Implants (ABI) are used to restore hearing in patients lacking appropriate cochlear anatomy and/or cochlear nerve. The objective of this study was to examine the Manufacture and User Facility Device Experience (MAUDE) database to analyze adverse events. STUDY DESIGN This is a study of a multi-institutional database maintained by the US FDA. SETTING A database analysis was performed via collaboration of multiple clinicians at tertiary referral centers. METHODS The MAUDE database was queried for Medical Device Reports (MDRs) relating to ABIs. MDRs were identified using the advanced search term "Implant, Auditory Brainstem" and reviewing all reports with the basic search term "Brainstem Implant". All collected reports were individually reviewed. RESULTS A total of 265 individual patient reports were reviewed, of which 55 reports met inclusion criteria. Reports regarding audiologic outcome included failure to provide hearing benefit (n = 27), implant failure/device malfunction (n = 10), and device non-use (n = 6). Postoperative complications included local skin infection (n = 3), CSF leak (n = 3), elevated ICP (n = 1), surgical site dehiscence (n = 1), swelling (n = 1), seroma formation requiring drainage (n = 1), and meningitis (n = 2). Two patients had dislodged magnets during 1.5 Tesla MRI acquisition. There were 35 instances of full explantation of the device and 1 partial removal; 13 patients had a new device implanted following explantation. CONCLUSIONS Poor hearing results, device failure, and non-use were commonly reported causes for explanation in this analysis. This information can aid physicians in counseling patients and family members and managing device expectations.
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Affiliation(s)
- Olivia E Speed
- University of Arkansas for Medical Sciences - Little Rock, AR, USA
| | - Soroush Farsi
- University of Arkansas for Medical Sciences - Little Rock, AR, USA
| | - Kaersti Rickels
- University of Arkansas for Medical Sciences - Little Rock, AR, USA
| | - Vijay A Patel
- Department of Otolaryngology - Head and Neck Surgery, University of California San Diego, La Jolla, CA, USA; Division of Pediatric Otolaryngology, Rady Children's Hospital - San Diego, San Diego, CA, USA
| | - Anna Bareiss
- University of Arkansas for Medical Sciences - Little Rock, AR, USA
| | - John Dornhoffer
- University of Arkansas for Medical Sciences - Little Rock, AR, USA; Arkansas Children's Hospital - Little Rock, AR, USA
| | - Robert A Saadi
- University of Arkansas for Medical Sciences - Little Rock, AR, USA; Arkansas Children's Hospital - Little Rock, AR, USA.
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Adult Auditory Brainstem Implant Outcomes and Three-Dimensional Electrode Array Position on Computed Tomography. Ear Hear 2021; 42:1741-1754. [PMID: 34282087 DOI: 10.1097/aud.0000000000001064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Factors contributing to auditory brainstem implant (ABI) outcomes are poorly understood. The aims of this study are to (1) characterize ABI electrode array position on postoperative imaging and (2) determine if variability in position is related to perceptual outcomes. DESIGN Retrospective cohort study. Subjects were selected from the adult ABI recipient population at Massachusetts Eye and Ear. Postoperative three-dimensional (3D) computed tomography (CT) reconstruction of the head was used to measure ABI array position in 20 adult ABI recipients (17 with Neurofibromatosis Type 2 (NF2) and three non-NF2 recipients). Three-dimensional electrode array position was determined based on angles from the horizontal using posterior and lateral views and on distances between the proximal array tip superiorly from the basion (D1), laterally (D2P) and posteriorly (D2L) from the midline. Array position was correlated with perceptual data (in 15 of the 20 recipients who used their ABI). Perceptual data included the number of electrodes that provided auditory sensation, location and type of side effects, level of speech perception (from no sound to open-set word recognition of monosyllables) and the amount of charge required for auditory perception. RESULTS Although the 3D orientation of the ABI array exhibited a variety of angles, all arrays were posteriorly tilted from the lateral view and most were medially tilted from the posterior view. ABI position relative to the basion from posterior showed mean distances of 1.71 ± 0.42 and 1.1 ± 0.29 cm for D1 and D2, respectively, and a mean D2 of 1.30 ± 0.45 cm from the lateral view. A strong linear negative correlation was found between the number of active electrodes and the distance of the proximal array tip laterally from the basion (D2P; rs = -0.73, p = 0.006) when measured in the posterior view. Although side effects were experienced in all recipients and varied in type and location across the array, electrodes in the middle part of the array tended to elicit auditory sensations while the proximal and distal tips of the array tended to elicit nonauditory side effects. Arrays with and without low charge thresholds appeared to generally overlap in position. However, the two recipients with the best (open-set) speech perception had low charge thresholds and had arrays that were tilted superiorly in the posterior view. CONCLUSION ABI recipients with better speech perception appear to share a profile of arrays that are tilted superiorly as compared to recipients with lower speech perception levels. These ABI recipients have a high number of active electrodes (10 or more) and require less electrical charge on individual electrodes to achieve optimal stimulation.
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Low-Intensity Ultrasound Causes Direct Excitation of Auditory Cortical Neurons. Neural Plast 2021; 2021:8855055. [PMID: 33883994 PMCID: PMC8041518 DOI: 10.1155/2021/8855055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/02/2020] [Accepted: 03/19/2021] [Indexed: 02/06/2023] Open
Abstract
Cochlear implantation is the first-line treatment for severe and profound hearing loss in children and adults. However, deaf patients with cochlear malformations or with cochlear nerve deficiencies are ineligible for cochlear implants. Meanwhile, the limited spatial selectivity and high risk of invasive craniotomy restrict the wide application of auditory brainstem implants. A noninvasive alternative strategy for safe and effective neuronal stimulation is urgently needed to address this issue. Because of its advantage in neural modulation over electrical stimulation, low-intensity ultrasound (US) is considered a safe modality for eliciting neural activity in the central auditory system. Although the neural modulation ability of low-intensity US has been demonstrated in the human primary somatosensory cortex and primary visual cortex, whether low-intensity US can directly activate auditory cortical neurons is still a topic of debate. To clarify the direct effects on auditory neurons, in the present study, we employed low-intensity US to stimulate auditory cortical neurons in vitro. Our data show that both low-frequency (0.8 MHz) and high-frequency (>27 MHz) US stimulation can elicit the inward current and action potentials in cultured neurons. c-Fos staining results indicate that low-intensity US is efficient for stimulating most neurons. Our study suggests that low-intensity US can excite auditory cortical neurons directly, implying that US-induced neural modulation can be a potential approach for activating the auditory cortex of deaf patients.
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Mahboubi H, Slattery WH, Mehta GU, Lekovic GP. Options and strategies for hearing restoration in pediatric neurofibromatosis type 2. Childs Nerv Syst 2020; 36:2481-2487. [PMID: 32564156 DOI: 10.1007/s00381-020-04721-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/02/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE In this article, we will review the mechanisms and natural history of hearing loss in neurofibromatosis type 2 (NF2) and discuss the hearing outcomes with different rehabilitation options. METHODS Review of the published literature. RESULTS NF2 is a rare autosomal dominant syndrome characterized by vestibular schwannomas and other intracranial and spinal tumors. Bilateral vestibular schwannomas are the hallmark of the disease which occur in 90 to 95% of the patients. As a result, hearing loss will eventually occur in almost all NF2 patients. Deafness can occur from tumor progression or from treatment of vestibular schwannomas and is among the most debilitating aspects of NF2. A number of surgical and non-surgical rehabilitation options are available for these patients including cochlear and auditory brainstem implants. The audiologic outcomes with surgical rehabilitation options have been variable but most patients are able to achieve sound awareness and benefit from auditory cues in lip reading. CONCLUSION Early identification and treatment of NF2 patients can help in achieving better hearing outcomes in the pediatric population. An increasing number of NF2 patients are receiving open set word understanding with refinement in surgical techniques.
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Affiliation(s)
- Hossein Mahboubi
- Division of Neurotology (HM and WHS) and Division of Neurosurgery (GUM and GPL), House Ear Institute, 2100 W 3rd Street, Suite 111, Los Angeles, CA, 90057, USA
| | - William H Slattery
- Division of Neurotology (HM and WHS) and Division of Neurosurgery (GUM and GPL), House Ear Institute, 2100 W 3rd Street, Suite 111, Los Angeles, CA, 90057, USA
| | - Gautam U Mehta
- Division of Neurotology (HM and WHS) and Division of Neurosurgery (GUM and GPL), House Ear Institute, 2100 W 3rd Street, Suite 111, Los Angeles, CA, 90057, USA
| | - Gregory P Lekovic
- Division of Neurotology (HM and WHS) and Division of Neurosurgery (GUM and GPL), House Ear Institute, 2100 W 3rd Street, Suite 111, Los Angeles, CA, 90057, USA.
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Prieto-Matos C, Garaycochea O, Calavia D, Alegre M, Bejarano B, Huarte A, Díez-Valle R, Zubieta JL, Manrique M. Clinical Profile and Results Obtained in Patients Treated by Auditory Brainstem Implants. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2020. [DOI: 10.1016/j.otoeng.2019.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pediatric Auditory Brainstem Implant Users Compared With Cochlear Implant Users With Additional Disabilities. Otol Neurotol 2020; 40:936-945. [PMID: 31295204 DOI: 10.1097/mao.0000000000002306] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To evaluate long-term language development in children with prelingual deafness who received auditory brainstem implants (ABIs) compared with children who received cochlear implants (CIs) at the same hospital. Additional non-auditory disabilities were taken into account. STUDY DESIGN Retrospective cohort study. SETTING Tertiary referral center. PATIENTS Ten children with bilateral malformations of the cochlea and/or cochlear nerve who received ABIs, including seven with additional disabilities, and 147 children with CIs as a reference group, including 22 children with additional disabilities. INTERVENTION ABIs were implanted at 1.3 to 6.2 years of age. Follow-up ranged from 1.1 to 7.7 years. MAIN OUTCOME MEASURES Receptive and expressive language abilities were assessed using the Infant Toddler Meaningful Auditory Integration Scale (IT-MAIS), the Categories of Auditory Performance (CAP), the Meaningful Use of Speech Scale (MUSS), and the Speech Intelligibility Rate (SIR). RESULTS Of the 10 children with ABIs, seven had long-term follow-up data. Within 1 year, six of the seven children with ABIs could identify sounds, respond to speech, and use their voice to attract attention. Language skills developed at a slower rate than in children with CIs and reached the same competence level when additional disabilities were absent. These language skills matched, on average, those of children with CIs with additional disabilities. CONCLUSION For deaf children with bilateral inner ear malformations, ABIs provide satisfactory auditory input. Children with ABIs are able to develop receptive and expressive language skills comparable to those of children with CIs with additional disabilities. Using this knowledge, preoperative parent counselling can be refined.
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Prieto-Matos C, Garaycochea O, Calavia D, Alegre M, Bejarano B, Huarte A, Díez-Valle R, Zubieta JL, Manrique M. Clinical Profile and Results Obtained in Patients Treated by Auditory Brainstem Implants. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2020; 71:225-234. [PMID: 31937406 DOI: 10.1016/j.otorri.2019.08.003] [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] [Received: 05/05/2019] [Revised: 08/05/2019] [Accepted: 08/13/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Cochlear implants have been able to treat some types of hearing loss, but those related to cochlear nerve impairment made it necessary to find new ways to manage these deficits; leading to auditory brainstem implants (ABI). AIM Our objective is to present the clinical profile of patients treated through an ABI and the results obtained from 1997 to 2017. MATERIAL AND METHODS On the one hand, patients with statoacoustic nerve tumours (VIIIcranial nerve) were selected, and on the other hand, patients withoutVIII tumours with congenital malformations of the inner ear. Before and after the placement of the ABI, hearing was assessed through tonal audiometry, from which the PTA (Pure Tone Average) and the CAP (Categories of Auditory Performance) scale were obtained. RESULTS A total of 20 patients undergoing ABI surgery were included. Eight were of tumour cause (40%) and 12 non-tumour (60%). In 15 subjects (75%) a suboccipital approach was performed and in 5 (25%) translabyrinthine. The mean of active electrodes before the implantation of Cochlear® (Nucleus ABI24) was 13/21 (61.90%) versus 8.5/12 (70.83%) of the Med-el® (ABI Med-el). An improvement in the mean PTA of 118.49dB was found against 46.55dB at 2years. On the CAP scale, values of1 were obtained in the preimplantation and of 2.57 (1-5) in the 2-year revision. CONCLUSION The ABI is a safe option, and with good hearing results when the indication is made correctly.
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Affiliation(s)
- Carlos Prieto-Matos
- Departamento de Otorrinolaringología, Clínica Universidad de Navarra, Pamplona, España.
| | - Octavio Garaycochea
- Departamento de Otorrinolaringología, Clínica Universidad de Navarra, Pamplona, España
| | - Diego Calavia
- Departamento de Otorrinolaringología, Clínica Universidad de Navarra, Pamplona, España
| | - Manuel Alegre
- Departamento de Neurofisiología, Clínica Universidad de Navarra, Pamplona, España
| | - Bartolomé Bejarano
- Departamento de Neurocirugía, Clínica Universidad de Navarra, Pamplona, España
| | - Alicia Huarte
- Departamento de Otorrinolaringología, Clínica Universidad de Navarra, Pamplona, España
| | - Ricardo Díez-Valle
- Departamento de Neurocirugía, Clínica Universidad de Navarra, Pamplona, España
| | - José Luis Zubieta
- Departamento de Radiodiagnóstico, Clínica Universidad de Navarra, Pamplona, España
| | - Manuel Manrique
- Departamento de Otorrinolaringología, Clínica Universidad de Navarra, Pamplona, España
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Zhou Q, Yang Z, Wang Z, Wang B, Wang X, Zhao C, Zhang S, Wu T, Li P, Li S, Zhao F, Liu P. Awake craniotomy for assisting placement of auditory brainstem implant in NF2 patients. Acta Otolaryngol 2018; 138:548-553. [PMID: 29361882 DOI: 10.1080/00016489.2018.1424998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Auditory brainstem implants (ABIs) may be the only opportunity for patients with NF2 to regain some sense of hearing sensation. However, only a very small number of individuals achieved open-set speech understanding and high sentence scores. Suboptimal placement of the ABI electrode array over the cochlear nucleus may be one of main factors for poor auditory performance. In the current study, we present a method of awake craniotomy to assist with ABI placement. METHODS Awake surgery and hearing test via the retrosigmoid approach were performed for vestibular schwannoma resections and auditory brainstem implantations in four patients with NF2. Auditory outcomes and complications were assessed postoperatively. RESULTS Three of 4 patients who underwent awake craniotomy during ABI surgery received reproducible auditory sensations intraoperatively. Satisfactory numbers of effective electrodes, threshold levels and distinct pitches were achieved in the wake-up hearing test. In addition, relatively few electrodes produced non-auditory percepts. There was no serious complication attributable to the ABI or awake craniotomy. CONCLUSIONS It is safe and well tolerated for neurofibromatosis type 2 (NF2) patients using awake craniotomy during auditory brainstem implantation. This method can potentially improve the localization accuracy of the cochlear nucleus during surgery.
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Affiliation(s)
- Qiangyi Zhou
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Zhijun Yang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Zhenmin Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Bo Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Xingchao Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Chi Zhao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Shun Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Tao Wu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Peng Li
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Shiwei Li
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Fu Zhao
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, People’s Republic of China
| | - Pinan Liu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, People’s Republic of China
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