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Gowrishankar SV, Fleet A, Tomasoni M, Durham R, Umeria R, Merchant SA, Shah SFH, Muzaffar J, Mohammed H, Kuhn I, Tysome J, Smith ME, Donnelly N, Axon P, Bance M, Borsetto D. The Risk of Meningitis After Cochlear Implantation: A Systematic Review and Meta-Analysis. Otolaryngol Head Neck Surg 2023; 169:467-481. [PMID: 36864717 DOI: 10.1002/ohn.309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/05/2023] [Accepted: 02/08/2023] [Indexed: 03/04/2023]
Abstract
OBJECTIVE This study aims to estimate the rate of postoperative meningitis (both immediate and long-term) in patients following cochlear implants (CIs). It aims to do so through a systematic review and meta-analysis of published studies tracking complications after CIs. DATA SOURCES MEDLINE, Embase, and Cochrane Library. REVIEW METHODS This review was performed in line with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Studies tracking complications following CIs in patients were included. Exclusion criteria included non-English language studies and case series reporting <10 patients. Bias risk was evaluated using the Newcastle-Ottawa Scale. Meta-analysis was performed through DerSimonian and Laird random-effects models. RESULTS A total of 116/1931 studies met the inclusion criteria and were included in the meta-analysis. Overall, there were 112 cases of meningitis in 58,940 patients after CIs. Meta-analysis estimated an overall rate of postoperative meningitis of 0.07% (95% confidence interval [CIs], 0.03%-0.1%; I2 = 55%). Subgroup meta-analysis showed this rate had 95% CIs crossing 0% in implanted patients who received the pneumococcal vaccine, antibiotic prophylaxis, those with postoperative acute otitis media (AOM), and those implanted less than 5 years. CONCLUSION Meningitis is a rare complication following CIs. Our estimated rates of meningitis after CIs appear lower than prior estimates based on epidemiological studies in the early 2000s. However, the rate still appears higher than the baseline rate in the general population. The risk was very low in implanted patients who received the pneumococcal vaccine, antibiotic prophylaxis, received unilateral or bilateral implantations, developed AOM, those implanted with a round window or cochleostomy techniques, and those under 5 years.
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Affiliation(s)
- Shravan V Gowrishankar
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
- Department of Clinical Medicine, University of Cambridge, School of Clinical Medicine, Cambridge, UK
| | - Alex Fleet
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
- Department of Clinical Medicine, University of Cambridge, School of Clinical Medicine, Cambridge, UK
| | - Michele Tomasoni
- Department of Otolaryngology-Head and Neck Surgery, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Rory Durham
- Department of Clinical Medicine, University of Cambridge, School of Clinical Medicine, Cambridge, UK
| | - Rishi Umeria
- Department of Clinical Medicine, University of Cambridge, School of Clinical Medicine, Cambridge, UK
| | - Serena A Merchant
- Department of Clinical Medicine, University of Cambridge, School of Clinical Medicine, Cambridge, UK
| | - Syed F H Shah
- Department of Clinical Medicine, University of Cambridge, School of Clinical Medicine, Cambridge, UK
| | - Jameel Muzaffar
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
| | - Hassan Mohammed
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
| | - Isla Kuhn
- Cambridge University Medical Library, Cambridge, UK
| | - James Tysome
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
| | - Matthew E Smith
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
| | - Neil Donnelly
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
| | - Patrick Axon
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
| | - Manohar Bance
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
- Department of Clinical Medicine, University of Cambridge, School of Clinical Medicine, Cambridge, UK
| | - Daniele Borsetto
- Department of Otolaryngology-Head and Neck Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
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Alahmadi A, Abdelsamad Y, Salamah M, Alenzi S, Badr KM, Alghamdi S, Alsanosi A. Cochlear implantation in adults and pediatrics with enlarged vestibular aqueduct: a systematic review on the surgical findings and patients' performance. Eur Arch Otorhinolaryngol 2022; 279:5497-5509. [PMID: 35771280 DOI: 10.1007/s00405-022-07511-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 06/13/2022] [Indexed: 01/04/2023]
Abstract
PURPOSE Cochlear implantation (CI) has been considered a safe and effective management option for patients with severe to profound hearing loss. Patients with enlarged vestibular aqueduct (EVA) could be challenging with some variations in surgical approaches, intraoperative surgical notes, and clinical outcomes. This study aimed to review the surgical and clinical outcomes of cochlear implantation among patients with EVA. MATERIALS AND METHODS A systematic literature search was carried out in five major databases. All original studies reporting cochlear implantation in patients with EVA were included for qualitative data synthesis. The risk of bias was independently assessed through the National Intuitional of Health tool. The review protocol was registered in PROSPERO (reference number: CRD42021225900). RESULTS A total of 34 studies with 4035 subjects were included. Of them, 853 (21.14%) had EVA and underwent CI. Mondini malformation was the most frequently associated anomaly (n = 78, 11.1%). Unilateral implantation was performed in 258 cases while bilateral in 119 subjects. Postoperative complications included CSF/perilymph gusher (n = 112), CSF oozing (n = 18), and partial electrode insertion (n = 6). Closing the cochleostomy with temporalis fascia, muscle, connective tissue, or fibrin glue was the most frequently reported approach to manage CSF/perilymph gusher (n = 67, 56.7%) while packing was performed in six patients. CONCLUSION Patients with EVA demonstrated audiometric and speech performance improvement after CI. However, many patients had intra- or postoperative complications. Further research is needed as the outcomes may be affected by associated temporal bone pathology, the timing of implant, and hearing condition.
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Affiliation(s)
- Asma Alahmadi
- King Abdullah Ear Specialist Center (KAESC), College of Medicine, King Saud University Medical City (KSUMC), King Saud University, P.O. Box; 245, Riyadh, 11411, Saudi Arabia.
| | | | - Marzouqi Salamah
- King Abdullah Ear Specialist Center (KAESC), College of Medicine, King Saud University Medical City (KSUMC), King Saud University, P.O. Box; 245, Riyadh, 11411, Saudi Arabia
| | - Saad Alenzi
- King Fahad Specialist Hospital, MOH, Tabuk, Saudi Arabia
| | | | | | - Abdulrahman Alsanosi
- King Abdullah Ear Specialist Center (KAESC), College of Medicine, King Saud University Medical City (KSUMC), King Saud University, P.O. Box; 245, Riyadh, 11411, Saudi Arabia
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Cochlear Implantation in Children with Enlarged Vestibular Aqueduct: A Systematic Review of Surgical Implications and Outcomes. Ear Hear 2022; 44:440-447. [PMID: 36397213 DOI: 10.1097/aud.0000000000001309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVES This study investigated age at implantation, improvement in hearing and speech perception outcomes, as well as surgical complications in pediatric cochlear implant recipients with Pendred Syndrome (PS) or non-syndromic enlarged vestibular aqueduct (NSEVA). DESIGN A systematic review of the literature between 1984 and 2021 was performed. Two independent reviewers performed abstract and full-text screening using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. The inclusion criteria were: English language, cochlear implant, age at implantation available, age <18 years, PS, Mondini malformation, and enlarged vestibular aqueduct. Full-text analysis was completed using the National Institute of Health assessment tool for case series and case-control studies. Studies were also graded according to the Oxford Centre for Evidence-Based Medicine grading system. RESULTS In total, 198 studies were identified and screened, and 55 studies were included for analysis. Audiological outcomes were available in 46 studies, and the four-frequency pure-tone audiogram average improved by 60 to 78 dB HL due to cochlear implantation. Auditory performance and speech intelligibility scores increased by 44%. The overall average implantation age was 60 months. The implantation age was 21 months lower in the studies where individuals were implanted after the year 2000 compared with those implanted before the year 2000. Perilymph gusher/oozing was the most common surgical incident reported, occurring in 187 of 1572 implantations. CONCLUSIONS In children with PS/NSEVA, cochlear implantation improves pure-tone average by 60 to 78 dB HL and capacity of auditory performance/speech intelligibility by 44%. The implantation age for these children has decreased during the last two decades but is still somewhat higher than reported for unselected pediatric cochlear implantation. Perilymph gusher/oozing is the most common surgical complication.
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Biggs K, Crundwell G, Metcalfe C, Muzaffar J, Monksfield P, Bance M. Anatomical and audiological considerations in branchiootorenal syndrome: A systematic review. Laryngoscope Investig Otolaryngol 2022; 7:540-563. [PMID: 35434312 PMCID: PMC9008175 DOI: 10.1002/lio2.749] [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: 06/04/2021] [Revised: 12/08/2021] [Accepted: 12/11/2021] [Indexed: 11/23/2022] Open
Abstract
Objective Establish anatomical considerations, audiological outcomes, and optimal management in patients with branchiootic/branchiootorenal syndrome (BO/BOR). Methods Databases reviewed: Medline, Pubmed, Embase, Web of Science, Cochrane Collection, and ClinicalTrials.gov. Clinical or radiological studies of patients with BOR syndrome describing either the audiological profile or anatomical changes were included. Articles in which BOR syndrome was associated with other syndromes, and those that were focused only on general and genetic aspects of BOR syndrome were excluded. Articles were assessed using Oxford Centre for Evidence‐Based Medicine (OCEBM) grading system and the Brazzelli risk of bias tool for nonrandomized studies. Results Searches identified 379 articles. Of these, 64 studies met the inclusion criteria, reporting outcomes in 482 patients from at least 95 families. In 308 patients, hearing loss was categorized as sensorineural (29%), conductive (20%), and mixed (51%). Hearing outcomes were variable in terms of onset, pattern, and severity; ranging from mild to profound deafness. One hundred sixty‐nine patients presented with inner ear anomalies, 145 had middle, and 151 had external ear abnormalities. In 44 studies, 58 ear operations were described. Mixed outcomes were reported in patients managed with hearing aids or middle ear surgery; however, successful cochlear implantation was described in all five cases. Conclusion The anatomical and audiological profiles of patients with BO/BOR are variable. A range of surgical procedures were described, however lacked objective outcome measures. Given the range of anatomical variants, management decisions should be made on an individual basis including full audiological and radiological assessment. Level of evidence NA.
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Affiliation(s)
- Kirsty Biggs
- Royal Stoke University Hospital Stoke on Trent UK
- Wolfson Institute of Population Health Queen Mary University of London London UK
| | - Gemma Crundwell
- Cambridge University Hospitals NHS Foundation Trust Addenbrooke’s Health Campus Cambridge UK
| | - Christopher Metcalfe
- Royal Stoke University Hospital Stoke on Trent UK
- ENT Department, Queen Elizabeth Hospital Birmingham University Hospitals Birmingham NHS Foundation Trust Birmingham UK
| | - Jameel Muzaffar
- ENT Department, Queen Elizabeth Hospital Birmingham University Hospitals Birmingham NHS Foundation Trust Birmingham UK
- University of Cambridge Department of Clinical Neurosciences, Addenbrooke’s Health Campus Cambridge UK
| | - Peter Monksfield
- ENT Department, Queen Elizabeth Hospital Birmingham University Hospitals Birmingham NHS Foundation Trust Birmingham UK
| | - Manohar Bance
- Cambridge University Hospitals NHS Foundation Trust Addenbrooke’s Health Campus Cambridge UK
- University of Cambridge Department of Clinical Neurosciences, Addenbrooke’s Health Campus Cambridge UK
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Grover M, Sharma S, Samdani S, Gupta G, Preetam C, Gera K, Vaishnav JK, Hada MK. New SMS Classification of Cochleovestibular Anomalies: Our Experience with 25 Cases of Type I Anomaly. Indian J Otolaryngol Head Neck Surg 2021; 73:333-339. [PMID: 34471622 PMCID: PMC8364613 DOI: 10.1007/s12070-021-02442-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/02/2021] [Indexed: 11/27/2022] Open
Abstract
PURPOSE To study and analyse the radiological and surgical findings of 25 cochlear implantees with SMS type-I cochleovestibular malformation and to compare their outcomes in terms of hearing and speech gains pre- and post-operatively. METHODS Retrospective analysis of cochlear implanted candidates over a period of 8 year from 3 institutions was undertaken and 25 patients suffering from pre-lingual profound congenital sensori-neural hearing loss along with presence of SMS type I cochleovestibular malformation were studied. Pre-operative radiology, surgical difficulties and complication, and post-operative hearing and speech outcomes upto a period of 2 years, using IT-MAIS scores were noted. Statistical comparison pre- and post-implantation was done using Wilcoxon signed rank test and a p-value of < 0.05 was considered significant. RESULTS In 25 cases, we encountered 2 posterior SCC dysplasia, 15 enlarged vestibular aqueducts (LVA), 2 dilated vestibules, 4 superior SCC dysplasia, 2 cases with both posterior and superior SCC dysplasia and of those 1 had a dilated vestibule also. Intra-operatively, CSF leak was observed in 10 patients. Complete electrode insertion and good electrical response (NRT) was detected in all. No facial nerve anomaly was encountered. IT-MAIS scores increased from a pre-operative mean of 4.32 to 34.56 two years post-operatively and this difference was found to be statistically significant. CONCLUSION Our experience with SMS Type I malformations show promising and motivating results with less chances of complications, similar to implant candidates with normal anatomy. The outcomes in this group of patients are definitely not affected by any malformations in semicircular canals, vestibule or vestibular aqueduct.
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Affiliation(s)
- Mohnish Grover
- Department of Otorhinolaryngology and Head Neck Surgery, S.M.S Medical College and Hospital, Jaipur, Rajasthan 302004 India
| | - Shivam Sharma
- Department of Otorhinolaryngology and Head Neck Surgery, S.M.S Medical College and Hospital, Jaipur, Rajasthan 302004 India
| | - Sunil Samdani
- Department of Otorhinolaryngology and Head Neck Surgery, S.M.S Medical College and Hospital, Jaipur, Rajasthan 302004 India
| | - Gaurav Gupta
- Department of Otorhinolaryngology and Head Neck Surgery, S.P Medical College and Hospital, Bikaner, Rajasthan India
| | - Chappati Preetam
- Department of Otorhinolaryngology and Head Neck Surgery, All India Institute of Medical Sciences, Bhubaneswar, Orissa India
| | - Kriti Gera
- S.M.S Medical College and Hospital, Jaipur, Rajasthan 302004 India
| | - Jairaj Kumar Vaishnav
- Department of Otorhinolaryngology and Head Neck Surgery, RVRS Medical College and Hospital, Bhilwara, Rajasthan India
| | - Mahendra Kumar Hada
- Department of Otorhinolaryngology and Head Neck Surgery, S.M.S Medical College and Hospital, Jaipur, Rajasthan 302004 India
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Enlarged Vestibular Aqueduct: Hearing Progression and Cochlear Implant Candidacy in Pediatric Patients. Otol Neurotol 2021; 42:203-206. [PMID: 33885268 DOI: 10.1097/mao.0000000000003034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
HYPOTHESIS/OBJECTIVE Investigate the rate of hearing loss progression and incidence of cochlear implant candidacy in children with enlarged vestibular aqueduct (EVA). BACKGROUND EVA is the most common congenital malformation of the inner ear, is responsible for a large percentage of children with hearing loss, and is associated with hearing loss progression. Rates and degree of progression of hearing loss to cochlear implantation candidacy have not been well described. METHODS Review of children with EVA who presented to a single academic medical center. Audiometric data were reviewed to determine subjects who met criteria for cochlear implantation (≥75 dB pure-tone average) at presentation. For those not meeting criteria, serial audiometric data were reviewed for progression to candidacy. RESULTS A total of 257 ears met inclusion criteria. One hundred ninety-two (74.7%) met cochlear implant candidacy criteria by age 12, yet only 117 ears (60.9%) actually received implants before turning 13. One hundred fifty-three ears (59.5%) met implant candidacy criteria at presentation. Nearly 50% of those not initially meeting implantation criteria had a ≥15 dB shift in pure-tone average by age 12, with 37.5% of this subgroup meeting implant candidacy criteria before their teen years at an average age of 7.10 years. CONCLUSION The majority of children with EVA reach cochlear implant candidacy before reaching adulthood, yet implantation rates for candidate ears remain at 60% and delay in implantation persist. Parents of children with EVA should be counseled on the likelihood of progression and closely monitored for cochlear implant candidacy.
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Vestibular impairment in cochlear implanted children presenting enlarged vestibular aqueduct and enlarged endolymphatic sac. Int J Pediatr Otorhinolaryngol 2021; 141:110557. [PMID: 33341717 DOI: 10.1016/j.ijporl.2020.110557] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/11/2020] [Accepted: 12/11/2020] [Indexed: 11/22/2022]
Abstract
UNLABELLED Enlarged vestibular aqueduct (EVA) is a common finding in tomodensitometry. When cranial MRI is performed, enlarged endolymphatic sac (EES) can also be found. Profound hearing loss is a common finding in these patients but a few studies have investigated vestibular function after cochlear implantation (CI) in EVA and EES patients. Our main objective was to find out whether in EVA children candidates to CI, a higher endolymphatic sac (ES) volume was predictive for higher rates of postsurgical vestibular complications. METHODS We retrospectively included EVA children who benefited from CI, during the last 2 years. Two groups were constituted according to the presence or not of a vestibular impairment (decrease in the VOR gain on the VHIT test on one of the semicircular canals and/or a loss of cVEMPs) 6 months after CI. Endolymphatic volume of both VA and ES was measured for each patient. RESULTS Fifteen patients were included. The mean endolymph volume was significantly higher in the impaired group (0.40 cm3 ± 0.23, range 0.08-0.70) than in the non-impaired group (0.11 cm3 ± 0.07, range 0.04-0.29; p = 0.029). Four children of the impaired group were followed during one year. At the end of vestibular rehabilitation, all children recovered a lateral canal function and a saccular function. CONCLUSION In EVA children, a combined EES appears to increase the risk of severe post CI vestibular impairment. To minimize this risk prior CI surgery, besides tomodensitometry, MRI measurement of the ES volume should be systematically performed.
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Varadarajan VV, Dayton OL, De Jesus RO, Antonelli PJ. Prevalence of occult cochlear basal turn patency. Acta Otolaryngol 2020; 140:889-892. [PMID: 32804558 DOI: 10.1080/00016489.2020.1800815] [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: 10/23/2022]
Abstract
BACKGROUND Perilymph gusher (PLG) is a rare complication of otologic surgery attributed to a communication between the cochlea and the internal auditory canal (IAC). Subtle patency between the cochlear basal turn and IAC has recently been identified on computed tomography (CT) as a risk factor, specifically when the defect is > 0.75 mm. OBJECTIVES Investigate the prevalence of radiographic cochlear basal turn patency. MATERIALS AND METHODS Patients with CT of the temporal bones and inner ears interpreted as "normal" were included. An otologist and a radiologist independently reviewed CTs to measure radiographic dehiscence in an oblique plane along the interface of the cochlea and IAC. Known PLGs were excluded. RESULTS Two hundred and ten ears were included (88 conductive or mixed hearing loss, 62 sensorineural hearing loss, 41 audiometrically normal ears). 71 ears (33.8%) were radiographically patent. Mean defect width was 0.41 mm (0.15-0.7 mm). Defect width was not associated with type of hearing loss, age, or gender. No defects were wider than 0.75 mm. CONCLUSIONS Radiographic patency of the cochlear basal turn may be present in patients with hearing loss and normal hearing, but patency > 0.75 mm (i.e. risk for PLG) is rare.
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Affiliation(s)
| | - Orrin L. Dayton
- Department of Radiology, University of Florida, Gainesville, FL, USA
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Deep NL, Gordon SA, Shapiro WH, Waltzman SB, Roland JT, Friedmann DR. Cochlear Implantation in Children with Single-Sided Deafness. Laryngoscope 2020; 131:E271-E277. [PMID: 32065422 DOI: 10.1002/lary.28561] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/01/2020] [Accepted: 01/21/2020] [Indexed: 01/06/2023]
Abstract
OBJECTIVE To describe our experience with children undergoing unilateral cochlear implantation (CI) for treatment of single-sided deafness (SSD). STUDY DESIGN Retrospective case series. METHODS A retrospective case review from a tertiary referral center involving 14 pediatric patients (<18 years) with SSD who underwent unilateral CI. Speech perception testing in quiet and noise in the CI-only and bimodal conditions with at least 1 year of device use and device usage from data logs represent the main outcome measures. RESULTS The mean age at CI was 5.0 years (median 4.4, range 1.0-11.8 years). The mean duration of deafness was 3.0 years (median 2.4, range 0.6-7.0 years). Mean follow-up was 3.4 years. Speech perception testing with a minimum of 1 year post-CI was available in eight patients. The mean word recognition scores (WRS) in the CI-only condition was 56%; a significant improvement from baseline. Testing in background noise with spatially separated speech and noise revealed that patients scored as well or better with the CI-on versus CI-off in all conditions and in no cases was interference from the CI noted. Data logs were reviewed for device usage which revealed an average use of 6.5 hr/d. CONCLUSION Cochlear implantation is a viable treatment option for pediatric SSD in this self-selected cohort. Open-set speech and improvement in background noise can be achieved. Careful patient selection and thorough counseling on expectations is paramount to achieving successful outcomes. LEVEL OF EVIDENCE IV Laryngoscope, 131:E271-E277, 2021.
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Affiliation(s)
- Nicholas L Deep
- Department of Otolaryngology-Head & Neck Surgery, NYU School of Medicine, New York, New York, U.S.A
| | - Steven A Gordon
- Department of Otolaryngology-Head & Neck Surgery, NYU School of Medicine, New York, New York, U.S.A
| | - William H Shapiro
- Department of Otolaryngology-Head & Neck Surgery, NYU School of Medicine, New York, New York, U.S.A
| | - Susan B Waltzman
- Department of Otolaryngology-Head & Neck Surgery, NYU School of Medicine, New York, New York, U.S.A
| | - J Thomas Roland
- Department of Otolaryngology-Head & Neck Surgery, NYU School of Medicine, New York, New York, U.S.A
| | - David R Friedmann
- Department of Otolaryngology-Head & Neck Surgery, NYU School of Medicine, New York, New York, U.S.A
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Dhanasingh A, Dietz A, Jolly C, Roland P. Human Inner-ear Malformation Types Captured in 3D. J Int Adv Otol 2020; 15:77-82. [PMID: 31058598 DOI: 10.5152/iao.2019.6246] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Capture the human inner-ear malformation types in 3D by segmenting the inner-ear structures from clinical CT (computed tomography) and MR (magnetic resonance) image datasets. Volumetric analysis was done to find the variations in the volume of cochlear part alone from complete inner-ear followed by 3D printing from the 3D segmented models. MATERIALS AND METHODS Using 3D slicer freeware, the complete inner-ear structures were segmented from anonymized CT and MR image by setting a tight grey-scale threshold to avoid capturing unwanted structures followed by volumetric analysis of the cochlear part alone. 3D printing was done using Form labs desktop 3D printer. RESULTS We identified 2x normal anatomy (NA) cochlea, 1x enlarged vestibular aqueduct syndrome (EVAS), 3x incomplete partition (IP) type-I, 4x IP type-II, 3x IP type-III, 5x common cavity (CC) and 5x cochlear hypoplasia (CH). 3D segmented models along with the 3D printed models showed huge variation in size, shape and the anatomy among the image data-sets analyzed. Volumetric analysis showed that on average, volume of CC was above 150mm3, volume of CH fell below 80mm3, Volume of NA, EVAS and IP-I were all around 85-105mm3 whereas the volume of IP-II was around 50mm3. CONCLUSION Visualizing human inner-ear malformation types in 3D both as computer models and as 3D printed models is a whole-new experience as demonstrated in this study. The volumetric analysis showed a huge variation among the volume of cochlear part alone among the malformation types.
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Affiliation(s)
| | - Aarno Dietz
- Department of Otolaryngology, Kuopio University Hospital, Kuopio, Finland
| | | | - Peter Roland
- Department of Otolaryngology, Universtiy of Texas Southwestern Medical Center, Dallas, USA
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Enlarged Vestibular Aqueduct and Cochlear Implants: The Effect of Early Counseling on the Length of Time Between Candidacy and Implantation. Otol Neurotol 2019; 39:e90-e95. [PMID: 29315182 DOI: 10.1097/mao.0000000000001663] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To determine if discussing cochlear implantation (CI) with patients with enlarged vestibular aqueducts (EVA) and their families before reaching audiological criteria for CI candidacy effects the length of time between reaching audiological candidacy and CI surgery, and to describe the universal newborn hearing screening (UNHS) results and communication modality in this sample. PATIENTS Forty-two patients (25 females) with confirmed EVA and cochlear implants. INTERVENTION(S) Diagnostic CI visit. MAIN OUTCOME MEASURES The primary outcome measure is the difference in length of time between reaching audiological candidacy for CI and surgical implantation between those who had preliminary discussions regarding CI with their medical and healthcare providers before reaching audiological candidacy versus who had discussions after reaching candidacy. The secondary outcome measure is the result of the UNHS and primary mode of communication used by each patient. RESULTS Discussing CI before reaching audiological candidacy was associated with a significantly shorter duration between reaching audiological candidacy and receiving CI (median = 3.1 mo; interquartile range [IQR] = 1.7-5.4) as compared with discussing CI after reaching candidacy (median = 5.8 mo; IQR = 3.2-11.2; p = 0.012). Participants born after the implementation of the UNHS, 16 of 24 patients referred on one or both ears. Communication modalities were evenly divided between utilizing sign-support English and oral/aural communicators only. CONCLUSIONS Discussion of CI in patients with EVA before reaching audiological candidacy reduces the amount of time the child is without adequate auditory access and contributes to a constructive and interactive preparatory experience.
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Wang S, Ding W, Chen C, Xu B, Liu X, Bian P, Guo Y. Analysis between phenotypes and genotypes of inner ear malformation. Acta Otolaryngol 2019; 139:223-232. [PMID: 30762457 DOI: 10.1080/00016489.2018.1554262] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND The clinical characteristics of LVAS have attracted more and more attention, its audiology and imaging features have also been deeply studied. OBJECTIVE To analyze phenotypes, genotypes of EVA, and find out the relationship between them. METHODS Sixty EVA patients were tested by audiometry, temporal bone high-resolution CT and inner ear MRI. SNPscan technology were carried out after the patients signed informed consent. SPSS19.0 software was used. RESULT 1. Three types malformations include EVA, EVA with Mondini and Mondini were found. They accounted for 48.20%, 40.10%, and 11.70%. 2. The SLC26A4 gene mutation frequency was (47/53) 88.68% in EVA patients. The most common genotype was c.919-2A > G/c.919-2A > G, accounting for 28.30%. The most common mutation type was c.9I9-2A > G. 3. GJB2 and SLC26A4 gene mutation frequencies were significantly different (χ2=65.185, p<.001). CONCLUSIONS 1. EVA patients with severe sensorineural hearing loss were always diagnosed in childhood and Cochlear implantation was feasible for these patients with the bilateral hearing loss. 2. SLC26A4 gene was closely related to EVA. 3. GJB2 and mtDNA genes were not responsible for EVA. SIGNIFICANCE The relationship between genotype and clinical phenotype provides a theoretical basis for future gene diagnosis and prevention and treatment of LVAS.
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Affiliation(s)
- Suyang Wang
- Department of Otolaryngology-Head and Neck Surgery, Maternal and Child Health Hospital of Gansu Province, Lanzhou, China
| | - Wenjuan Ding
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, China
| | - Chi Chen
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, China
| | - Baicheng Xu
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, China
| | - Xiaowen Liu
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, China
| | - Panpan Bian
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, China
| | - Yufen Guo
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, China
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Patel ND, Ascha MS, Manzoor NF, Gupta A, Semaan M, Megerian C, Otteson TD. Morphology and cochlear implantation in enlarged vestibular aqueduct. Am J Otolaryngol 2018; 39:657-663. [PMID: 30153950 DOI: 10.1016/j.amjoto.2018.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 06/05/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE The purpose of this work is to explore audiometry following cochlear implantation (CI) in patients with enlarged vestibular aqueduct (EVA) and to investigate the effects of inner ear morphological variation on post CI audiometry. METHODS This was a retrospective review of both natural and cochlear-implant-aided audiometry results, using all available measurements in a mixed-effects model accounting for longitudinal change and the grouping structure of ears. Patients who visited our tertiary academic medical center between 2000 and 2016 were identified as having EVA according to Cincinnati criteria on radiological examination; patients eligible for CI were then selected for analysis. RESULTS Multivariable modeling showed a statistically significant hearing improvement in ears with EVA undergoing CI with regards to pure tone average (-64.0 dB, p < 0.0001), speech reception threshold (-57.90 dB, p < 0.0001), and word score (34.8%, p > 0.0001). Vestibular aqueduct midpoint size and the presence of incomplete partition type II (IP II) did not have significant independent associations with audiometric findings. However, multivariable modeling revealed a statistically significant interaction between IP II and CI such that IP II ears demonstrated a decrease in WS improvement of 30.2% (p = 0.0059) compared to non-IP II ears receiving CI. CONCLUSION There is a statistically significant audiometric benefit to ears with EVA receiving CI. Morphology, specifically the presence of IP II, may hinder CI benefit in terms of word score however this finding needs clinical validation. This data improves personalization of surgical counseling and planning for patients with EVA considering CI.
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Affiliation(s)
- Nilam D Patel
- Ear, Nose, and Throat Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA; Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH, USA
| | - Mustafa S Ascha
- Ear, Nose, and Throat Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA; Center for Clinical Investigation, Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Nauman F Manzoor
- Ear, Nose, and Throat Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Amit Gupta
- Ear, Nose, and Throat Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Maroun Semaan
- Ear, Nose, and Throat Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA; Center for Clinical Investigation, Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Cliff Megerian
- Ear, Nose, and Throat Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA; Center for Clinical Investigation, Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Todd D Otteson
- Ear, Nose, and Throat Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA; Center for Clinical Investigation, Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA.
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Moussa KM, Elmesidy DSE, Dabbous AO. Egyptian children with congenital sensorineural hearing loss candidates for cochlear implant: Is MRI evaluation necessary? THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2018. [DOI: 10.1016/j.ejrnm.2017.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Brown CS, Choi KJ, Kaylie DM. Preoperative Imaging Findings and Cost in Adults With Postlingual Deafness Prior to Cochlear Implant. Ann Otol Rhinol Laryngol 2018; 127:270-274. [DOI: 10.1177/0003489418759114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | - Kevin J. Choi
- Duke University Hospital, Durham, North Carolina, USA
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Kant AR, Banik AA. The Use of Lexical Neighborhood Test (LNT) in the Assessment of Speech Recognition Performance of Cochlear Implantees with Normal and Malformed Cochlea. Indian J Otolaryngol Head Neck Surg 2017; 69:338-344. [PMID: 28929065 DOI: 10.1007/s12070-017-1142-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 04/27/2017] [Indexed: 11/29/2022] Open
Abstract
The present study aims to use the model-based test Lexical Neighborhood Test (LNT), to assess speech recognition performance in early and late implanted hearing impaired children with normal and malformed cochlea. The LNT was administered to 46 children with congenital (prelingual) bilateral severe-profound sensorineural hearing loss, using Nucleus 24 cochlear implant. The children were grouped into Group 1-(early implantees with normal cochlea-EI); n = 15, 31/2-61/2 years of age; mean age at implantation-3½ years. Group 2-(late implantees with normal cochlea-LI); n = 15, 6-12 years of age; mean age at implantation-5 years. Group 3-(early implantees with malformed cochlea-EIMC); n = 9; 4.9-10.6 years of age; mean age at implantation-3.10 years. Group 4-(late implantees with malformed cochlea-LIMC); n = 7; 7-12.6 years of age; mean age at implantation-6.3 years. The following were the malformations: dysplastic cochlea, common cavity, Mondini's, incomplete partition-1 and 2 (IP-1 and 2), enlarged IAC. The children were instructed to repeat the words on hearing them. Means of the word and phoneme scores were computed. The LNT can also be used to assess speech recognition performance of hearing impaired children with malformed cochlea. When both easy and hard lists of LNT are considered, although, late implantees (with or without normal cochlea), have achieved higher word scores than early implantees, the differences are not statistically significant. Using LNT for assessing speech recognition enables a quantitative as well as descriptive report of phonological processes used by the children.
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Affiliation(s)
- Anjali R Kant
- Department of Speech and Language Pathology, Ali Yavar Jung National Institute of Speech and Hearing Disabilities (Divyangjan) (AYJNISHDD), Mumbai, Maharashtra India
| | - Arun A Banik
- Material Development Department, Ali Yavar Jung National Institute of Speech and Hearing Disabilities (Divyangjan) (AYJNISHDD), Mumbai, Maharashtra India
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Mey K, Bille M, Cayé-Thomasen P. Cochlear implantation in Pendred syndrome and non-syndromic enlarged vestibular aqueduct - clinical challenges, surgical results, and complications. Acta Otolaryngol 2016; 136:1064-8. [PMID: 27241825 DOI: 10.1080/00016489.2016.1185538] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To explore specific clinical issues, surgical results, and complications of 80 cochlear implantations (CI) in 55 patients with Pendred syndrome (PS) or non-syndromic enlarged vestibular aqueduct (NSEVA). BACKGROUND Previous studies have focused either on unselected case series or on populations with mixed cochlear malformations. PS/NSEVA accounts for up to 10% of congenital SNHL, rendering this a large group of cochlear implant candidates. The abnormal inner ear anatomy of these patients may be associated with a lower surgical success rate and a higher rate of complications. STUDY DESIGN Retrospective review of patients' medical records and CT/MRI. SETTING Tertiary referral center. MATERIALS AND METHODS The medical records and CT/MRI images of 55 PS/NSEVA patients receiving 80 cochlear implantations from 1982-2014 were reviewed. Demographic data, surgical results, intra-operative incidents, and post-operative complications were retrieved. RESULTS Complications occurred in 36% of implantations; 5% hereof major complications. Gushing/oozing from the cochleostoma occurred in 10% of implantations and was related to transient, but not prolonged post-operative vertigo. CONCLUSION Intra-operative risks of gushing/oozing and post-operative vertigo are the primary clinical issues in PS/NSEVA patients regarding CI. Nonetheless, the surgical success rate is high and the major complication rate is low; similar to studies of unselected series of CI recipients.
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Affiliation(s)
- Kristianna Mey
- Department of Otorhinolaryngology, Head & Neck Surgery, and Audiology, East Danish Center for Cochlear Implantation, Copenhagen University Hospital Rigshospitalet/Gentofte Hospital, Copenhagen, Denmark
| | - Michael Bille
- Department of Otorhinolaryngology, Head & Neck Surgery, and Audiology, East Danish Center for Cochlear Implantation, Copenhagen University Hospital Rigshospitalet/Gentofte Hospital, Copenhagen, Denmark
| | - Per Cayé-Thomasen
- Department of Otorhinolaryngology, Head & Neck Surgery, and Audiology, East Danish Center for Cochlear Implantation, Copenhagen University Hospital Rigshospitalet/Gentofte Hospital, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Bilateral Sequential Cochlear Implantation in Patients With Enlarged Vestibular Aqueduct (EVA) Syndrome. Otol Neurotol 2016; 37:e96-103. [PMID: 26756161 DOI: 10.1097/mao.0000000000000925] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To analyze audiometric outcomes after bilateral cochlear implantation in patients with isolated enlarged vestibular aqueduct (EVA) syndrome and associated incomplete partition (IP) malformations. Secondary objective was to analyze rate of cerebrospinal fluid (CSF) gusher in patients with IP-EVA spectrum deformities and compare this with the existing literature. STUDY DESIGN Retrospective chart review. METHODS Thirty-two patients with EVA syndrome who received unilateral or bilateral cochlear implants between June 1999 and January 2014 were identified in the University Hospitals Case Medical Center cochlear implant database. Isolated EVA (IEVA) and Incomplete Partition Type II (IP-II) malformations were identified by reviewing high-resolution computed tomography (HRCT) imaging. Demographic information, age at implantation, surgical details, postimplantation audiometric data including speech reception thresholds (SRT), word, and sentence scores were reviewed and analyzed. Intra- and postoperative complications were analyzed as well and compared with the literature. RESULTS Seventeen patients (32 implanted ears) had pediatric cochlear implantation for EVA-associated hearing loss. Data from 16 controls (32 implanted ears) were used to compare audiometric and speech outcomes of EVA cohort. Mean age at implantation was 6.8 years for EVA cohort and 6.0 years for controls. There was no statistically significant difference in long-term postoperative SRT, monaurally aided word scores, and binaurally tested word scores between pediatric EVA group and controls. The EVA patients had a long-term mean sentence score of 85.92%. A subset of EVA patients implanted at mean age of 3.18 years (n = 15 ears) had similar audiometric outcomes to another control group with Connexin 26 mutations (n = 20 ears) implanted at a similar age. Further subset analysis revealed no significant differences in age at implantation, SRT, and word scores in patients with IEVA and IP-II malformation. There was no significant association between size of vestibular aqueduct and age at implantation. There was no CSF gusher or other intra- or postoperative complications reported in our series. CONCLUSION Bilateral sequential cochlear implantation can be performed safely in patients with EVA. Audiometric outcomes are excellent and comparable to pediatric cochlear implant patients with no malformations. CSF gusher rates can be minimized by trans-round window approach. Further long-term studies are needed to identify differences within IP-EVA spectrum deformities, audiometric outcomes, and proportions of EVA patients who will need cochlear implantation for hearing rehabilitation.
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Jung J, Suh MJ, Kim SH. Discrepancies between video head impulse and caloric tests in patients with enlarged vestibular aqueduct. Laryngoscope 2016; 127:921-926. [DOI: 10.1002/lary.26122] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 05/04/2016] [Accepted: 05/06/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Jinsei Jung
- Department of Otorhinolaryngology; Yonsei University College of Medicine; Seoul Republic of Korea
| | - Michelle J. Suh
- Department of Otorhinolaryngology; Yonsei University College of Medicine; Seoul Republic of Korea
| | - Sung Huhn Kim
- Department of Otorhinolaryngology; Yonsei University College of Medicine; Seoul Republic of Korea
- The Airway Mucus Institute; Yonsei University College of Medicine; Seoul Republic of Korea
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van Nierop J, Huinck W, Pennings R, Admiraal R, Mylanus E, Kunst H. Patients with Pendred syndrome: is cochlear implantation beneficial? Clin Otolaryngol 2016; 41:386-94. [DOI: 10.1111/coa.12532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2015] [Indexed: 11/28/2022]
Affiliation(s)
- J.W.I. van Nierop
- Department of Otorhinolaryngology; Head and Neck Surgery; Radboud university medical center; Nijmegen The Netherlands
- Radboud Institute for Health Sciences; Radboud university medical center; Nijmegen The Netherlands
| | - W.J. Huinck
- Department of Otorhinolaryngology; Head and Neck Surgery; Radboud university medical center; Nijmegen The Netherlands
- Donders Institute for Brain; Cognition and Behaviour; Radboud university medical center; Nijmegen The Netherlands
| | - R.J.E. Pennings
- Department of Otorhinolaryngology; Head and Neck Surgery; Radboud university medical center; Nijmegen The Netherlands
- Radboud Institute for Health Sciences; Radboud university medical center; Nijmegen The Netherlands
| | - R.J.C. Admiraal
- Department of Otorhinolaryngology; Head and Neck Surgery; Radboud university medical center; Nijmegen The Netherlands
- Radboud Institute for Health Sciences; Radboud university medical center; Nijmegen The Netherlands
| | - E.A.M. Mylanus
- Department of Otorhinolaryngology; Head and Neck Surgery; Radboud university medical center; Nijmegen The Netherlands
- Donders Institute for Brain; Cognition and Behaviour; Radboud university medical center; Nijmegen The Netherlands
| | - H.P.M. Kunst
- Department of Otorhinolaryngology; Head and Neck Surgery; Radboud university medical center; Nijmegen The Netherlands
- Radboud Institute for Health Sciences; Radboud university medical center; Nijmegen The Netherlands
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Powell HRF, Birman CS. Large vestibular aqueduct syndrome: Impedance changes over time with different cochlear implant electrode arrays. Cochlear Implants Int 2015; 16:326-30. [PMID: 26098963 DOI: 10.1179/1754762815y.0000000013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES The aim of this study was to assess if large vestibular aqueduct syndrome (LVAS), with the increase in perilymphatic pressure, affects impedance changes over time with different types of Cochlear(®) implant electrode arrays Contour, Straight, and CI 422. To report speech perception outcomes for these cochlear implant recipients. METHODS Retrospective case review of impedance levels and categories of auditory performance. Impedance data were collected at switch on, 1 month, 3, 6, 12, and 24 months after cochlear implantation and compared with control (non-LVAS cochlear implant recipient) data for each array type. Forty-seven patients with exclusive LVAS and no other vestibulocochlear abnormalities or other identifiable cause of deafness were eligible for inclusion in the study. RESULTS In LVAS patients, there was a significant difference in impedance between the three types of device (P < 0.0001). Time since switch on was associated with a decrease in impedance for all three devices (P < 0.0001). The mean impedance reduced between switch on and 1 month and remained relatively constant thereafter. Sound variation with softening of sounds was seen in four CI 422 (Straight Research Array) recipients due to ongoing fluctuations in electrode compliance. DISCUSSION For all three array types, there was no significant difference in the mean impedance between the LVAS patients and controls over the first 12 months. In keeping with previous studies cochlear implant recipients with LVAS hear very well through the cochlear implant.
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Cochlear implantation in patients with inner ear bone malformations with posterior labyrinth involvement: an exploratory study. Eur Arch Otorhinolaryngol 2015; 273:893-8. [DOI: 10.1007/s00405-015-3652-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 05/07/2015] [Indexed: 11/28/2022]
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Pritchett C, Zwolan T, Huq F, Phillips A, Parmar H, Ibrahim M, Thorne M, Telian S. Variations in the cochlear implant experience in children with enlarged vestibular aqueduct. Laryngoscope 2015; 125:2169-74. [DOI: 10.1002/lary.25187] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 11/19/2014] [Accepted: 12/29/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Cedric Pritchett
- Department of Otolaryngology-Head and Neck Surgery; Northwestern University; Chicago Illinois
| | - Teresa Zwolan
- Division of Otology-Neurotology; Department of Otolaryngology-Head and Neck Surgery; University of Michigan Health System; Ann Arbor Michigan
| | - Farhan Huq
- Department of Otolaryngology-Head and Neck Surgery; Henry Ford Health System; Detroit Michigan
| | | | | | | | - Marc Thorne
- Department of Radiology; University of Michigan Health System; Ann Arbor Michigan
- Division of Pediatric Otolaryngology; Department of Otolaryngology-Head and Neck Surgery; University of Michigan Health System; Ann Arbor Michigan U.S.A
| | - Steven Telian
- Division of Otology-Neurotology; Department of Otolaryngology-Head and Neck Surgery; University of Michigan Health System; Ann Arbor Michigan
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Cochlear implantation in children with syndromic deafness. Int J Pediatr Otorhinolaryngol 2013; 77:1312-6. [PMID: 23773333 DOI: 10.1016/j.ijporl.2013.05.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 05/19/2013] [Accepted: 05/21/2013] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To examine the outcome of cochlear implantation in children with syndromic deafness, who are increasingly being considered for cochlear implants and who represent a unique challenge to the cochlear implant team. METHOD In this retrospective case series in a tertiary referral cochlear implant centre, we describe a series of 38 children with a clinical syndrome causing deafness who have undergone cochlear implantation. The outcome measures are Bench-Kowal-Bamford (BKB) speech reception score (range 0-100%) and speech perception ability using the Geers and Moog Speech Reception Score (SRS) (range from 0; no speech perception, to 6; open set recognition of words). RESULTS The syndromes identified were Waardenburg syndrome (n = 10), Usher syndrome (n = 9), Pendred syndrome (n = 7), Jervell and Lange-Nielsen syndrome (n = 5), CHARGE syndrome (n = 2), and 1 each of Stickler, CINCA (Chronic Infantile Neurological Cutaneous and Articular), Bartter, Down, and Donnai-Barrow syndromes. After a minimum of 19 months following implantation, BKB was measurable in 20 of 38 patients, and ranged from 46 to 100% in quiet (median 87%, mean 81%). Eighteen children (55%) achieved a SRS at level six, and a further 8 (24%) achieved level five. There was significant variation of outcome between and within syndrome groups. CONCLUSIONS Additional disabilities are frequently encountered when considering children for cochlear implantation, and may be part of a recognised syndrome. Outcome is often excellent but can be variable even within the same syndrome group, and such children are therefore assessed on an individual basis to ensure a realistic expectation.
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Abstract
PURPOSE OF REVIEW Over the last decade, the selection criteria for cochlear implantation have expanded to include children with special auditory, otologic, and medical problems. Included within this expanded group of candidates are those children with auditory neuropathy spectrum disorder, cochleovestibular malformations, cochlear nerve deficiency, associated syndromes, as well as multiple medical and developmental disorders. Definitive indications for cochlear implantation in these unique pediatric populations are in evolution. This review will provide an overview of managing and habilitating hearing loss within these populations with specific focus on cochlear implantation as a treatment option. RECENT FINDINGS Cochlear implants have been successfully implanted in children within unique populations with variable results. Evaluation for cochlear implant candidacy includes the core components of a full medical, audiologic, and speech and language evaluations. When considering candidacy in these children, additional aspects to consider include disorder-specific surgical considerations and child/caregiver counseling regarding reasonable postimplantation outcome expectations. SUMMARY Cochlear implants are accepted as the standard of care for improving hearing and speech development in children with severe-to-profound hearing loss. However, children with sensorineural hearing loss who meet established audiologic criteria for cochlear implantation may have unique audiologic, medical, and anatomic characteristics that necessitate special consideration regarding cochlear implantation candidacy and outcome. Individualized preoperative candidacy and counseling, surgical evaluation, and reasonable postoperative outcome expectations should be taken into account in the management of these children.
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Távora-Vieira D, Miller S. Misdiagnosis of otosclerosis in a patient with enlarged vestibular aqueduct syndrome: a case report. J Med Case Rep 2012; 6:178. [PMID: 22747696 PMCID: PMC3438068 DOI: 10.1186/1752-1947-6-178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 04/11/2012] [Indexed: 05/26/2023] Open
Abstract
Introduction In the present case we report on the mismanagement of a patient misdiagnosed with otosclerosis, who was subsequently found to have enlarged vestibular aqueduct syndrome bilaterally. This highlights the need to not only be vigilant in pre-operative assessment of otosclerosis but also in post-operative investigations of stapedectomy failures. Case presentation Our patient, a 56-year-old Caucasian Australian woman, lost the hearing in her right ear following a stapedectomy approximately 25 years ago. It is thought that preoperative imaging was not conducted, while an inadequate (unmasked) audiogram was used to formulate the initial diagnosis of otosclerosis. The hearing in her left ear deteriorated to the point that a cochlear implant was now being considered for her right ear. Imaging performed as part of our pre-cochlear implant battery revealed bilateral enlarged vestibular aqueducts and thus the decision to proceed with a right cochlear implant was made following discussion with our patient and her family in regard to not only general surgical risks but specifically the remote risk that the surgical drilling required during the procedure could risk a deterioration of the hearing in her left ear because of the enlarged vestibular aqueduct on that side. Conclusions This report illustrates a case of misdiagnosis and mismanagement of bilateral enlarged vestibular aqueduct resulting in profound hearing loss. Fortunately our patient has been successfully implanted with a right cochlear implant with remarkable outcomes.
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Affiliation(s)
- Dayse Távora-Vieira
- School of Surgery, The University of Western Australia, Nedlands, Western Australia, Australia.
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Buchman CA, Teagle HFB, Roush PA, Park LR, Hatch D, Woodard J, Zdanski C, Adunka OF. Cochlear implantation in children with labyrinthine anomalies and cochlear nerve deficiency: implications for auditory brainstem implantation. Laryngoscope 2011; 121:1979-88. [PMID: 22024855 DOI: 10.1002/lary.22032] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 05/08/2011] [Indexed: 01/16/2023]
Abstract
OBJECTIVES/HYPOTHESIS Compare outcomes among children with inner ear malformations and/or cochlear nerve deficiency (CND) who have received a cochlear implant (CI). STUDY DESIGN Individual retrospective cohort study from 1993 to 2010. METHODS A select cohort of 76 children was identified. Imaging characteristics, operative findings, complications, mapping parameters, and performance were assessed. Comparisons among the different groups were undertaken. RESULTS Surgery was mostly uncomplicated. Nearly all children demonstrated behavioral responses to CI stimulation irrespective of inner ear morphology or the presence of CND. Children with CND had higher pure tone averages (PTAs) and required greater charge for stimulation than other malformation types. Open-set speech perception was achieved in 100% of children with incomplete partition-enlarged vestibular aqueduct (IP-EVA), 50% of those with hypoplastic malformations, and 19% of CND cases. Robust responses on eighth nerve compound action potential (ECAP) testing through the implant was associated with higher levels of speech perception. Manually supplemented communication strategies were more common among children with hypoplastic malformations (69%) and CND (95%) than those with IP-EVA (18%). CONCLUSIONS Children with IP-EVA malformations have an excellent prognosis for developing open-set speech perception and using oral communication modes following CI. On the contrary, children with severe malformations or CND may have elevated charge requirements for attaining sound detection alone. These children's prognosis for obtaining open-set speech understanding, using exclusive oral communication, and participating in mainstream education is more limited. These findings have important implications for considering alternative forms of intervention such as auditory brainstem implantation and/or supplementation with visually based communication strategies.
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Affiliation(s)
- Craig A Buchman
- Department of Otolaryngology-Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
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Gopen Q, Zhou G, Whittemore K, Kenna M. Enlarged vestibular aqueduct: Review of controversial aspects. Laryngoscope 2011; 121:1971-8. [DOI: 10.1002/lary.22083] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Accepted: 05/10/2011] [Indexed: 11/07/2022]
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