scholarly journals Significance of continuing audiovestibular practice during Covid-19 pandemic

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Oğuz Yilmaz ◽  
Dilara Bayazit ◽  
Handan Yaman ◽  
Berna Özge Mutlu
Keyword(s):  
Risk Factors ◽  
Cochlear Implant ◽  
Auditory Brainstem ◽  
University Hospital ◽  
Head Impulse Test ◽  
Caloric Test ◽  
Vestibular Evoked Myogenic Potential ◽  
Test Procedures ◽  
Lip Reading ◽  
Brainstem Response

Abstract Background We aimed to evaluate the significance of continuing audiovestibular practice during the Covid-19 pandemic in the audiology clinic of the university hospital. Methods The precautions, test procedures, and risk factors associated with the practice of audiology were evaluated. The number and diagnoses of the cases between 23 March and 23 May 2020 were also compared with the results of the same 2 months in 2019 in an attempt to evaluate the alterations in the audiology practice. Results The audiology practice has continued during the pandemic, and numerous audiovestibular tests like newborn hearing screening, pure tone and speech audiometry, auditory brainstem response (ABR) test, bedside vestibular assessment, videomystagmography (VNG), caloric test, vestibular evoked myogenic potential (VEMP), computerized dynamic posturography (CDP), video head impulse test (vHIT), intraoperative cochlear implant measurement, and postop cochlear implant fittings were performed. The number of tests has decreased significantly in the course of the pandemic (p < 0.01). No evidence of Covid-19 disease was detected in the audiology staff and patients. In general, no major risk was seen during testing under protective measures except for vestibular testing which induced vomiting and taking out the mask for lip reading during cochlear implant fitting in the elderly. Conclusion It is possible to perform audiovestibular tests during the Covid-19 pandemic by wearing necessary protective equipment and disinfecting the potential surfaces. Vomiting during vestibular tests, uncovering the nose and mouth for lip reading, and small-sized test cabins are the main risk factors of contamination in the audiology clinics.

scholarly journals Normative video head impulse test data in subjects with and without vascular risk factors

2020 ◽  
Author(s):  
Anders Hansson ◽  
Jonatan Salzer
Keyword(s):  
Risk Factors ◽  
Healthy Subjects ◽  
Vascular Risk Factor ◽  
Vascular Risk Factors ◽  
Healthy Adults ◽  
University Hospital ◽  
Head Impulse Test ◽  
Video Head Impulse Test ◽  
Vascular Risk ◽  
Head Impulse

Abstract Purpose There is a paucity of age- and vascular risk factor-stratified video head impulse test (vHIT) vestibulo-ocular reflex (VOR) data in the literature. The aim of this study was to investigate the vHIT VOR properties in healthy subjects of different ages and subjects with vascular risk factors. Methods This was a prospective observational single-center study at a tertiary referral university hospital in northern Sweden. Healthy participants and subjects with vascular risk factors were investigated with a floor standing external camera vHIT device. Age-stratified mean VOR gain among healthy adults and between group gain and gain asymmetry differences were calculated. Results We included eighty-eight healthy adults with a mean (range) age of 50 (22–85) years and n = 48 stroke ward patients with vascular risk factors (but without vestibular disease) with a mean (range) age of 74 (42–92) years. The mean VOR gain of horizontal canals decreased at higher ages in healthy subjects (r = − 0.32, p < 0.01, n = 167 canals). The age-stratified mean (SD) VOR gains were < 30 years: 0.98 (0.07), 30–39 years: 0.97 (0.07), 40–49 years: 0.98 (0.06), 50–59 years: 0.99 (0.06), 60–69 years: 0.93 (0.08), ≥ 70 years: 0.89 (0.15). No consistent differences between healthy subjects and subjects with vascular risk factors were seen except for a trend towards more pronounced gain asymmetries in the latter group. Conclusions Age, but not vascular risk factors influence VOR gain. Age-adjusted vHIT-measurements may be useful in acute vertigo stroke risk differentiation.

scholarly journals Intraoperative Monitoring of the Cochlear Nerve during Neurofibromatosis Type-2 Vestibular Schwannoma Surgery and Description of a “Test Intracochlear Electrode”

2019 ◽  
Vol 80 (01) ◽  
pp. e1-e9 ◽  
Author(s):  
Anand Kasbekar ◽  
Yu Chuen Tam ◽  
Robert Carlyon ◽  
John Deeks ◽  
Neil Donnelly ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Vestibular Schwannoma ◽  
Intraoperative Monitoring ◽  
Neurofibromatosis Type ◽  
Auditory Brainstem ◽  
Cochlear Nerve ◽  
Auditory Brainstem Responses ◽  
Tertiary Referral Center ◽  
Objective Evidence ◽  
Brainstem Response

Objectives A decision on whether to insert a cochlear implant can be made in neurofibromatosis 2 (NF2) if there is objective evidence of cochlear nerve (CN) function post vestibular schwannoma (VS) excision. We aimed to develop intraoperative CN monitoring to help in this decision. Design We describe the intraoperative monitoring of a patient with NF2 and our stimulating and recording set up. A novel test electrode is used to stimulate the CN electrically. Setting This study was set at a tertiary referral center for skull base pathology. Main outcome measure Preserved auditory brainstem responses leading to cochlear implantation. Results Electrical auditory brainstem response (EABR) waveforms will be displayed from different stages of the operation. A cochlear implant was inserted at the same sitting based on the EABR. Conclusion Electrically evoked CN monitoring can provide objective evidence of CN function after VS excision and aid in the decision-making process of hearing rehabilitation in patients who will be rendered deaf.

scholarly journals Analysis of the Risk Factors Associated with Hearing Loss of Infants Admitted to a Neonatal Intensive Care Unit: A 13-Year Experience in a University Hospital in Korea

2020 ◽  
Vol 17 (21) ◽  
pp. 8082
Author(s):  
Kyu Young Choi ◽  
Bum Sang Lee ◽  
Hyo Geun Choi ◽  
Su-Kyoung Park
Keyword(s):  
Risk Factors ◽  
Intensive Care Unit ◽  
Hearing Loss ◽  
Intensive Care ◽  
Neonatal Intensive Care Unit ◽  
Neonatal Intensive Care ◽  
Significant Risk ◽  
University Hospital ◽  
Control Group ◽  
Brainstem Response

Early detection of hearing loss in neonates is important for normal language development, especially for infants admitted to the neonatal intensive care unit (NICU) because the infants in NICU have a higher incidence of hearing loss than healthy infants. However, the risk factors of hearing loss in infants admitted to the NICU have not been fully acknowledged, especially in Korea, although they may vary according to the circumstances of each country and hospital. In this study, the risk factors of hearing loss in NICU infants were analyzed by using the newborn hearing screening (NHS) and the diagnostic auditory brainstem response (ABR) test results from a 13-year period. A retrospective chart review was performed using a list of NICU infants who had performed NHS from 2004 to 2017 (n = 2404) in a university hospital in Korea. For the hearing loss group, the hearing threshold was defined as 35 dB nHL or more in the ABR test performed in infants with a ‘refer’ result in the NHS. A four multiple number of infants who had passed the NHS test and matched the age and gender of the hearing loss group were taken as the control group. Various patient factors and treatment factors were taken as hearing loss related variables and were analyzed and compared. From the 2404 infants involved, the prevalence of hearing loss was 1.8% (n = 43). A comparison between the hearing loss group (n = 43) and the control group (n = 172) revealed that history of sepsis, peak total bilirubin, duration of vancomycin use, days of phototherapy, and exposure to loop-inhibiting diuretics were significantly different, and can be verified as significant risk factors for hearing loss in NICU infants.

Infrared/Video Eng Recording of Eye Movements to Evaluate the Inferior Vestibular Nerve Using the Minimal Caloric Test

1988 ◽  
Vol 98 (3) ◽  
pp. 207-210 ◽  
Author(s):  
Fred H. Linthicum ◽  
Ron Waldorf ◽  
William M. Luxford ◽  
Sharon Caltogirone
Keyword(s):  
High Frequency ◽  
Auditory Brainstem ◽  
Vestibular Nerve ◽  
Caloric Test ◽  
Nerve Section ◽  
High Frequency Hearing Loss ◽  
Vestibular Response ◽  
Infrared Video ◽  
Inferior Vestibular Nerve ◽  
Brainstem Response

The technique was originally developed to test the inferior vestibular nerve in tumor suspects whose high-frequency hearing loss exceeded the capabilities of the auditory brainstem response tests and whose electronystagmographic results showed no significantly reduced vestibular response. The test has subsequently been found effective to demonstrate persistent singular nerve fiber function in patients with persistent vertigo after retrolabyrinthine vestibular nerve section.

Comparison of Electrically Evoked Whole-Nerve Action Potential and Electrically Evoked Auditory Brainstem Response Thresholds in Nucleus CI24R Cochlear Implant Recipients

2002 ◽  
Vol 13 (08) ◽  
pp. 416-427 ◽  
Author(s):  
Marcia J. Hay-McCutcheon ◽  
Carolyn J. Brown ◽  
Kelly Schmidt Clay ◽  
Keely Seyle
Keyword(s):  
Action Potential ◽  
Cochlear Implant ◽  
Auditory Brainstem Response ◽  
Electrode Array ◽  
Auditory Brainstem ◽  
Electrode Arrays ◽  
Direct Stimulation ◽  
Nerve Action ◽  
Brainstem Response ◽  
Response Thresholds

In this study, differences between electrically evoked whole-nerve action potential (EAP) and electrically evoked auditory brainstem response (EABR) measurements within Nucleus CI24R cochlear implant recipients were evaluated. Precurved modiolus-hugging internal electrode arrays, such as the CI24R, are designed to provide more direct stimulation of neural elements of the modiolus. If the electrode array is closer to the modiolus, electrically evoked and behavioral levels might be lower than were previously recorded for the straight electrode array, the CI24M. EAP and EABR growth functions and behavioral levels were obtained for 10 postlingually deafened adults. Results revealed no significant differences between EAP and EABR threshold levels, and these levels were not significantly lower than those obtained using the CI24M.

Evaluation of Vestibular Functions in Patients with Vogt-Koyanagi-Harada Disease

2017 ◽  
Vol 22 (3) ◽  
pp. 190-195 ◽  
Author(s):  
Keishi Fujiwara ◽  
Shinya Morita ◽  
Kimiko Hoshino ◽  
Atsushi Fukuda ◽  
Yuji Nakamaru ◽  
...  
Keyword(s):  
Autoimmune Disorder ◽  
University Hospital ◽  
Caloric Test ◽  
Subjective Symptoms ◽  
Vestibular Evoked Myogenic Potential ◽  
Caloric Testing ◽  
Ocular Vemp ◽  
Cervical Vemp ◽  
Vestibular Symptoms ◽  
Vkh Disease

Vogt-Koyanagi-Harada (VKH) disease is an idiopathic, multisystem autoimmune disorder characterized by bilateral, diffuse granulomatous uveitis associated with neurological, audiovestibular, and dermatological manifestations. The purpose of this study is to investigate vestibular functions in patients with VKH disease. A total of 43 patients with VKH disease in Hokkaido University Hospital were enrolled in this study. Subjective symptoms such as dizziness or vertigo and the results of various vestibular examinations including nystagmus testing, caloric testing, and vestibular-evoked myogenic potential (VEMP) testing were investigated. Eight of 42 patients (19.0%) complained of subjective vestibular symptoms. On the other hand, 12 of 28 patients (42.9%) showed nystagmus, and 7 of 15 patients (46.7%) showed unilateral or bilateral weakness in the caloric test. VEMP testing was performed for 16 patients. Seven (43.8%) and 8 (50.0%) patients were evaluated as abnormal in cervical VEMP and ocular VEMP testing, respectively. The rate of detection of nystagmus was significantly higher than that of subjective symptoms. As vestibular dysfunction in patients with VKH disease cannot be detected through history taking alone, nystagmus testing, caloric testing, and VEMP testing should be performed to evaluate vestibular functions associated with VKH disease. It is considered that abnormal VEMP findings are associated with otolith organ dysfunction.

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