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Toru Sekitani - One of the best experts on this subject based on the ideXlab platform.
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Central Disorders in Vestibular Neuronitis
Acta oto-laryngologica. Supplementum, 1995Co-Authors: Yuji Imate, Toru Sekitani, Mayuri Okami, Masako MjuraAbstract:Between 1972 and 1993 equilibrium and audiological examinations were made on 73 patients who had been diagnosed to suffer from Vestibular Neuronitis. In 23 of these patients, central nervous disorders (CND) were suspected from the result of tests of positional and positioning nystagmus, smooth pursuit, optokinetic nystagmus or auditory brainstem response. In this group of patients the frequency of associated disorders and vertiginous symptoms (dizziness) was statistically higher than in the remainder 50 patients who did not have CND. In the CND group the time interval between the onset and improvement or disappearance of all vertiginous symptoms, nystagmus and canal paresis was longer than in the non-CND group.
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Enhanced MRI in Patients with Vestibular Neuronitis
Acta oto-laryngologica. Supplementum, 1995Co-Authors: Koji Hasuike, Toru Sekitani, Yuji ImateAbstract:Recent advances in magnetic resonance imaging (MRI) have demonstrated facial nerve enhancement in facial nerve palsy and cochlea enhancement in sudden deafness. However, no report has described the findings of enhanced MRI in Vestibular Neuronitis. Eight cases of Vestibular Neuronitis were studied with enhanced MRI. We did not detect any enhanced lesions of the Vestibular nerve or ganglion. So far, as the present conditions of MRI are concerned, it is difficult to detect any enhancement in the Vestibular nerve and ganglion. Further study will be required to evaluate the suitability of MRI for Vestibular Neuronitis.
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signs of central nervous system disorders in Vestibular Neuronitis
Equilibrium Research, 1994Co-Authors: Yuji Imate, Toru Sekitani, Mayuri Okami, Masako MiuraAbstract:Equilibrium and audiological examinations were conducted in 73 patients with a diagnosis of Vestibular Neuronitis during 1972 and 1993. In 23 patients central nervous system disorders were suspected from the results of tests of positional and positioning nystagmus, smooth pursuit, optokinetic nystagmus or auditory brainstem response. In this group of patients the mean age and the frequency of associated disorders and vertigo (dizziness) were significantly higher than in other patients, and the time intervals between the onset and improvement or disappearance of vertigo, nystagmus and canal paresis were longer. These findings suggest that aging and associated disorders of the central nervous system increase susceptibility to Vestibular Neuronitis.
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Serum Viral Antibody Titer in Vestibular Neuronitis
Acta Oto-laryngologica, 1993Co-Authors: Toshiaki Shimizu, Toru Sekitani, Tetsuyasu Hirata, Hirotaka HaraAbstract:Fifty—seven cases of Vestibular Neuronitis were evaluated for viral infection by means of serum, antibody liter. The viruses tested were herpes simplex virus, varicella—zoster virus, cytomegalovirus, EB virus, adenovirus, influenza virus A, influenza virus B, parainfluenza virus 3, mumps virus, rubella virus and measles virus. Paired sera were examined in 49 cases among 57 cases, 26 cases showed significant change (four—fold or greater change) in viral antibody titer. Only one case (53—year old female) showed high HSV 1 IgM antibody level by ELISA method, so the Vestibular Neuronitis in this case was assumed to have a close relation to viral infection.
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Interpretation of the combined galvanic test. Findings from cases with Vestibular Neuronitis.
Acta oto-laryngologica. Supplementum, 1993Co-Authors: Koji Hasuike, Koichiro Kanaya, Toru Sekitani, Michihiko Ogata, Hirotaka NakanoAbstract:The combined galvanic test (CGT) was developed in our department for simultaneous recording of galvanic eye movement test (GEMT) and galvanic body sway test (GBST). Twelve cases of Vestibular Neuronitis were studied first with the caloric test, and then with the CGT. The findings of the caloric test corresponded to those of the GEMT, but did not always correspond to those of the GBST. Thus we suggest that the GBST reflects an abnormality in a system different from that reflected by the caloric test and GEMT. It is likely that the caloric response mainly originates from the semicircular canal system. Thus the GEMT may reflect an abnormality in the semicircular canal system, while the GBST reflects an abnormality in the otolithic system. The CGT may thus be a feasible method of differentiating the disorders of the semicircular canal system from those of the otolithic system in the Vestibular nervous system.
Sanjay A. Bhansali - One of the best experts on this subject based on the ideXlab platform.
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S242 – Comparing the VEMP and ENG Tests in Vestibular Diagnosis
Otolaryngology-Head and Neck Surgery, 2008Co-Authors: Sanjay A. BhansaliAbstract:Objectives1) Compare the VEMP to the ENG test in the diagnosis of Vestibular disease. 2) Learn clinical usefulness of the VEMP test.MethodsWe prospectively evaluated 166 patients complaining of dizziness with a complete neurotologic examination. VEMP and ENG testing were done on 160 patients. Brain scans were done when indicated. We compared the clinical diagnosis to the VEMP and ENG test results separately for 4 commonly seen Vestibular conditions.Results44 patients had no VEMP response and were excluded. Of the 116 patients there were 32 cases of Vestibular Neuronitis, 17 of Meniere's disease, 15 of BPPV, 12 of central Vestibular dysfunction, 13 other Vestibular diagnoses, and 27 with no Vestibular diagnosis. Using a 2×2 contingency table and Fisher Exact Probability Test, there was a statistical difference between the VEMP and ENG tests only in diagnosis of Vestibular Neuronitis (p
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S242 – Comparing the VEMP and ENG Tests in Vestibular Diagnosis
Otolaryngology–Head and Neck Surgery, 2008Co-Authors: Sanjay A. BhansaliAbstract:Objectives 1) Compare the VEMP to the ENG test in the diagnosis of Vestibular disease. 2) Learn clinical usefulness of the VEMP test. Methods We prospectively evaluated 166 patients complaining of dizziness with a complete neurotologic examination. VEMP and ENG testing were done on 160 patients. Brain scans were done when indicated. We compared the clinical diagnosis to the VEMP and ENG test results separately for 4 commonly seen Vestibular conditions. Results 44 patients had no VEMP response and were excluded. Of the 116 patients there were 32 cases of Vestibular Neuronitis, 17 of Meniere's disease, 15 of BPPV, 12 of central Vestibular dysfunction, 13 other Vestibular diagnoses, and 27 with no Vestibular diagnosis. Using a 2×2 contingency table and Fisher Exact Probability Test, there was a statistical difference between the VEMP and ENG tests only in diagnosis of Vestibular Neuronitis (p<0.001) when analyzed individually, and because this difference was so strong, there was a statistical difference with the diagnoses taken all together (p<0.001). Conclusions The ENG test remains the gold standard for diagnosis of Vestibular disease. The VEMP test is useful in diagnosis of several Vestibular disorders, including the 4 considered in this study. There is a strong bias toward the ENG test mainly because the diagnosis of Vestibular Neuronitis relies heavily on an abnormal caloric response. The VEMP test is administered in a much shorter time than the ENG test and provides valuable information regarding the inferior Vestibular nerve and it has a lower false positive rate than the ENG test.
Carlos R. Gordon - One of the best experts on this subject based on the ideXlab platform.
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Vestibular Neuronitis in pilots follow up results and implications for flight safety
Laryngoscope, 2003Co-Authors: Avi Shupak, Zohar Nachum, Yoram Stern, Dror Tal, Amnon Gil, Carlos R. GordonAbstract:Objectives To report our experience over the past 12 years with the evaluation and follow-up of pilots with Vestibular Neuronitis and to discuss points relevant to flight safety and the resumption of flying duties. Study Design A retrospective, consecutive case series. Methods Eighteen military pilots with Vestibular Neuronitis were examined and followed up. A complete otoneurological workup was performed, including both physical examination and laboratory evaluation. The latter included electro-oculography (EOG) and a rotatory chair test using the smooth harmonic acceleration protocol. Results The mean patient age was 35 ± 6 years (range, 23 to 42 y), and the average follow-up period was 20.5 ± 12.8 months (mean ± standard deviation [SD]; (range, 11 to 48 mo). Electro-oculography caloric test on presentation documented significant unilateral hypofunction in all patients. Thirteen of the 18 patients (72%) had abnormal smooth harmonic acceleration test results. None of the pilots reported any symptoms on follow-up. However, five (28%) had positive otoneurological examination findings, and eight (44%) still had significant caloric lateralization (>25%). The average caloric hypofunction was reduced from 67.8% ± 29.3% at onset to 40% ± 16% (mean ± SD, P <.05, paired t test). Seven of the patients (39%) had additional electro-oculography findings beyond caloric hypofunction. These included spontaneous, positional, and positioning nystagmus. Smooth harmonic acceleration disease on follow-up was documented in eight patients (44%), five of whom had canal paresis. Eleven patients (61%) demonstrated residual Vestibular damage on follow-up. In 6 of these 11 cases (55%), the laboratory evaluation revealed Vestibular deficits otherwise undiagnosed by the bedside test battery. Conclusions The Vestibular system plays a central role in orientation awareness and is often challenged by flying conditions. The finding that approximately 60% of pilots who have had Vestibular Neuronitis continue to show signs of Vestibular malfunction, despite apparent clinical recovery, emphasizes the need for a complete Vestibular evaluation, including specific bedside testing and laboratory examinations, before flying duties can be resumed.
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Vestibular Neuronitis in pilots: follow-up results and implications for flight safety.
The Laryngoscope, 2003Co-Authors: Avi Shupak, Zohar Nachum, Yoram Stern, Dror Tal, Amnon Gil, Carlos R. GordonAbstract:Objectives To report our experience over the past 12 years with the evaluation and follow-up of pilots with Vestibular Neuronitis and to discuss points relevant to flight safety and the resumption of flying duties. Study Design A retrospective, consecutive case series. Methods Eighteen military pilots with Vestibular Neuronitis were examined and followed up. A complete otoneurological workup was performed, including both physical examination and laboratory evaluation. The latter included electro-oculography (EOG) and a rotatory chair test using the smooth harmonic acceleration protocol. Results The mean patient age was 35 ± 6 years (range, 23 to 42 y), and the average follow-up period was 20.5 ± 12.8 months (mean ± standard deviation [SD]; (range, 11 to 48 mo). Electro-oculography caloric test on presentation documented significant unilateral hypofunction in all patients. Thirteen of the 18 patients (72%) had abnormal smooth harmonic acceleration test results. None of the pilots reported any symptoms on follow-up. However, five (28%) had positive otoneurological examination findings, and eight (44%) still had significant caloric lateralization (>25%). The average caloric hypofunction was reduced from 67.8% ± 29.3% at onset to 40% ± 16% (mean ± SD, P
Avi Shupak - One of the best experts on this subject based on the ideXlab platform.
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Vestibular Neuronitis in pilots follow up results and implications for flight safety
Laryngoscope, 2003Co-Authors: Avi Shupak, Zohar Nachum, Yoram Stern, Dror Tal, Amnon Gil, Carlos R. GordonAbstract:Objectives To report our experience over the past 12 years with the evaluation and follow-up of pilots with Vestibular Neuronitis and to discuss points relevant to flight safety and the resumption of flying duties. Study Design A retrospective, consecutive case series. Methods Eighteen military pilots with Vestibular Neuronitis were examined and followed up. A complete otoneurological workup was performed, including both physical examination and laboratory evaluation. The latter included electro-oculography (EOG) and a rotatory chair test using the smooth harmonic acceleration protocol. Results The mean patient age was 35 ± 6 years (range, 23 to 42 y), and the average follow-up period was 20.5 ± 12.8 months (mean ± standard deviation [SD]; (range, 11 to 48 mo). Electro-oculography caloric test on presentation documented significant unilateral hypofunction in all patients. Thirteen of the 18 patients (72%) had abnormal smooth harmonic acceleration test results. None of the pilots reported any symptoms on follow-up. However, five (28%) had positive otoneurological examination findings, and eight (44%) still had significant caloric lateralization (>25%). The average caloric hypofunction was reduced from 67.8% ± 29.3% at onset to 40% ± 16% (mean ± SD, P <.05, paired t test). Seven of the patients (39%) had additional electro-oculography findings beyond caloric hypofunction. These included spontaneous, positional, and positioning nystagmus. Smooth harmonic acceleration disease on follow-up was documented in eight patients (44%), five of whom had canal paresis. Eleven patients (61%) demonstrated residual Vestibular damage on follow-up. In 6 of these 11 cases (55%), the laboratory evaluation revealed Vestibular deficits otherwise undiagnosed by the bedside test battery. Conclusions The Vestibular system plays a central role in orientation awareness and is often challenged by flying conditions. The finding that approximately 60% of pilots who have had Vestibular Neuronitis continue to show signs of Vestibular malfunction, despite apparent clinical recovery, emphasizes the need for a complete Vestibular evaluation, including specific bedside testing and laboratory examinations, before flying duties can be resumed.
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Vestibular Neuronitis in pilots: follow-up results and implications for flight safety.
The Laryngoscope, 2003Co-Authors: Avi Shupak, Zohar Nachum, Yoram Stern, Dror Tal, Amnon Gil, Carlos R. GordonAbstract:Objectives To report our experience over the past 12 years with the evaluation and follow-up of pilots with Vestibular Neuronitis and to discuss points relevant to flight safety and the resumption of flying duties. Study Design A retrospective, consecutive case series. Methods Eighteen military pilots with Vestibular Neuronitis were examined and followed up. A complete otoneurological workup was performed, including both physical examination and laboratory evaluation. The latter included electro-oculography (EOG) and a rotatory chair test using the smooth harmonic acceleration protocol. Results The mean patient age was 35 ± 6 years (range, 23 to 42 y), and the average follow-up period was 20.5 ± 12.8 months (mean ± standard deviation [SD]; (range, 11 to 48 mo). Electro-oculography caloric test on presentation documented significant unilateral hypofunction in all patients. Thirteen of the 18 patients (72%) had abnormal smooth harmonic acceleration test results. None of the pilots reported any symptoms on follow-up. However, five (28%) had positive otoneurological examination findings, and eight (44%) still had significant caloric lateralization (>25%). The average caloric hypofunction was reduced from 67.8% ± 29.3% at onset to 40% ± 16% (mean ± SD, P
Yuji Imate - One of the best experts on this subject based on the ideXlab platform.
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Enhanced MRI in Patients with Vestibular Neuronitis
Acta oto-laryngologica. Supplementum, 1995Co-Authors: Koji Hasuike, Toru Sekitani, Yuji ImateAbstract:Recent advances in magnetic resonance imaging (MRI) have demonstrated facial nerve enhancement in facial nerve palsy and cochlea enhancement in sudden deafness. However, no report has described the findings of enhanced MRI in Vestibular Neuronitis. Eight cases of Vestibular Neuronitis were studied with enhanced MRI. We did not detect any enhanced lesions of the Vestibular nerve or ganglion. So far, as the present conditions of MRI are concerned, it is difficult to detect any enhancement in the Vestibular nerve and ganglion. Further study will be required to evaluate the suitability of MRI for Vestibular Neuronitis.
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Central Disorders in Vestibular Neuronitis
Acta oto-laryngologica. Supplementum, 1995Co-Authors: Yuji Imate, Toru Sekitani, Mayuri Okami, Masako MjuraAbstract:Between 1972 and 1993 equilibrium and audiological examinations were made on 73 patients who had been diagnosed to suffer from Vestibular Neuronitis. In 23 of these patients, central nervous disorders (CND) were suspected from the result of tests of positional and positioning nystagmus, smooth pursuit, optokinetic nystagmus or auditory brainstem response. In this group of patients the frequency of associated disorders and vertiginous symptoms (dizziness) was statistically higher than in the remainder 50 patients who did not have CND. In the CND group the time interval between the onset and improvement or disappearance of all vertiginous symptoms, nystagmus and canal paresis was longer than in the non-CND group.
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signs of central nervous system disorders in Vestibular Neuronitis
Equilibrium Research, 1994Co-Authors: Yuji Imate, Toru Sekitani, Mayuri Okami, Masako MiuraAbstract:Equilibrium and audiological examinations were conducted in 73 patients with a diagnosis of Vestibular Neuronitis during 1972 and 1993. In 23 patients central nervous system disorders were suspected from the results of tests of positional and positioning nystagmus, smooth pursuit, optokinetic nystagmus or auditory brainstem response. In this group of patients the mean age and the frequency of associated disorders and vertigo (dizziness) were significantly higher than in other patients, and the time intervals between the onset and improvement or disappearance of vertigo, nystagmus and canal paresis were longer. These findings suggest that aging and associated disorders of the central nervous system increase susceptibility to Vestibular Neuronitis.
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Vestibular Compensation in Vestibular Neuronitis: Evaluation of Positional Nystagmus and Caloric Nystagmus
Acta oto-laryngologica. Supplementum, 1993Co-Authors: Yuji Imate, Koichiro Kanaya, Toru Sekitani, Masaaki Hiyoshi, Mitsuie MasudaAbstract:We evaluated the Vestibular functions, especially for positional nystagmus and caloric nystagmus, in 43 cases of Vestibular Neuronitis for long periods after its onset. It is shown that in the cases of Vestibular Neuronitis that were studied more than 10 years after the onset of the disease, the completed Vestibular compensation changed or the Vestibular compensation was still incomplete.
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nystagmus in Vestibular Neuronitis
Equilibrium Research, 1993Co-Authors: Yuji Imate, Toru Sekitani, Yoshihiko Okinaka, Shiro Endo, Michihiko Ogata, Takuo IkedaAbstract:An epidemiological survey of Vestibular Neuronitis was conducted in Japan with questionnaires. From 1988 through 1990 information was obtained from 531 patients in 71 hospitals.This paper describes the incidence of the different types of nystagmus in Vestibular Neuronitis.1) Group I consisted of 473 (89%) patients who showed direction-fixed nystagmus towards the healthy side in positional and positioning nystagmus tests. Group III consisted of 27 (5%) patients who showed vertical or direction changing nystagmus in the same tests.2) The incidences of complications and nystagmus at the last examination were higher in Group III than in Group I. Statistically significant differences weve found between the two groups.3) It was suspected that the cause of vertical or direction-changing nystagmus in Vestibular Neuronitis was different from the usual cause of Vestibular Neuronitis.
