Objective:To assess the effectiveness of machine learning in automating the prediction of vestibular abnormalities after cochlear implantation(CI)in patients with sensorineural hearing loss(SNHL),with the goal of deve...Objective:To assess the effectiveness of machine learning in automating the prediction of vestibular abnormalities after cochlear implantation(CI)in patients with sensorineural hearing loss(SNHL),with the goal of developing a practical model that can accurately predict long-term vestibular function outcomes and identify associated risk factors.Methods:Clinical data,including imaging,vestibular evoked myogenic potentials(VEMPs),and auditory information,were collected from patients with sensorineural hearing loss(SNHL)before and after CI.The decision tree algorithm was employed to address missing values and screen pre-CI clinical features.Six machine learning methods were subsequently utilized to predict the relationships between the extracted features and post-CI vestibular dysfunction.The best-performing method determined the ranking of feature importance,which was regarded as risk factors for predicting symptoms and VEMPs results after CI.Results:Logistic regression models effectively predicted both post-CI vestibular dysfunction and abnormal cervical VEMP(c VEMP),with accuracies of 80%and 78%,respectively.The relative importance of the features,in descending order,was as follows:c VEMP latency,c VEMP amplitude,and residual hearing threshold.Moreover,the support vector machine(SVM)model attained an accuracy of 88%in predicting abnormal ocular VEMP(o VEMP)post-CI.For the SVM model,the feature importance ranking was as follows:o VEMP latency,o VEMP amplitude,and residual hearing threshold.Conclusions:This study successfully leverages machine learning techniques,specifically support vector machines(SVM)and logistic regression models,to predict the impact of CI on vestibular function.These predictive models provide valuable insights for presurgical planning and decision-making in CI procedures.Moreover,the findings highlight the critical risk factors associated with vestibular dysfunction,offering a robust reference for guiding vestibular rehabilitation strategies.展开更多
Objective The main purpose of the present study was to describe the vestibular function in patients with auditory neuropathy (AN), and to assess their ability to maintain balance. Methods Vestibular function tests wer...Objective The main purpose of the present study was to describe the vestibular function in patients with auditory neuropathy (AN), and to assess their ability to maintain balance. Methods Vestibular function tests were performed on 32 patients with AN and 36 normal subjects including electronystagmopraphy(ENG) and static postrography(SPG). The results from the two groups were compared. Results Equilibrium function in patients with AN, was abnormal, compared to normal subjects. Conclusion Vestibular function tests, espe-cially static postrography, should be performed on patients with AN.展开更多
Vestibular schwannomas(VS)are benign tumors of the vestibular nerve.The common first symptoms are hearing loss and tinnitus,followed by imbalance,vertigo,and facial nerve involvement.The subjective symptoms of VS pati...Vestibular schwannomas(VS)are benign tumors of the vestibular nerve.The common first symptoms are hearing loss and tinnitus,followed by imbalance,vertigo,and facial nerve involvement.The subjective symptoms of VS patients are not consistent with the severity of vestibular lesions and the results of vestibular tests,which often interfere with clinicians’diagnoses.Thus,the main screening and diagnostic methods for VS are audiometry and magnetic resonance imaging(MRI),ignoring the evaluation of vestibular function at the source of pathological lesions.With the development and improvement of vestibular evaluation technology and its wide application in the clinic,modern vestibular examination technology can reflect the severity and frequency of vestibular lesions and compensation from multiple perspectives,providing an objective basis for the diagnosis and treatment of vestibular diseases.In this report,we review the results and characteristics of vestibular tests in VS patients and further clarify the clinical value of vestibular function assessment in the diagnosis and treatment of VS.展开更多
Background:Military operation personnel often suffer from sleep difficulty because of their work requirements.In this study,we investigated the efficacy of zaleplon at two doses to induce afternoon-sleep under noise i...Background:Military operation personnel often suffer from sleep difficulty because of their work requirements.In this study,we investigated the efficacy of zaleplon at two doses to induce afternoon-sleep under noise interference and its effects on psychomotor performance and vestibular function; we subsequently established the optimal dosage regimen for military operation personnel.Methods:Twenty-two healthy young male volunteers were recruited for the study.Eight subjects took 10 mg or 15 mg of zaleplon and placebo alternately and then were exposed to noise.Changes in polysomnography(PSG) indices,including sleep latency(SL),sleep efficiency(SE) and sleep structure,were recorded after drug administration.After awakening,the volunteers' subjective judgments of sleep quality and sleepiness were measured.Eight volunteers underwent 3 psychomotor performance tests at a one-week interval,and the psychomotor performance tests were conducted before and after taking zaleplon and placebo.Six volunteers participated in the vestibular function test session,and parameters,including optokinetic nystagmus(OKN),vestibular ocular reflex(VOR),visualvestibular ocular reflex(VVOR) and vestibular ocular reflex fixation suppression(VOR-Fix),were detected by the same experimental design as described above.The data of sleep observations were subjected to one-way variance analysis.Results:Compared with the placebo group,SL was shortened significantly,and the scores of subjective sleep quality and sleep depth were clearly increased in the zaleplon 10 mg group(P<0.05).Moreover,the SE and the percent of REM(rapid eye movement) sleep were increased remarkably in the zaleplon 15 mg group(P<0.01).Furthermore,the SE,percent of REM sleep and scores of subjective sleep depth in the zaleplon 15 mg group were significantly higher than in the zaleplon 10 mg group(P<0.05).The psychomotor performance did not change significantly after ingestion of 10 mg or 15 mg of zaleplon,whereas the OKN and VOR gains were lower in the two dose groups of zaleplon(P<0.05) and restored to normal 3h after drug ingestion.Conclusion:Zaleplon is an ideal hypnotic for military personnel,and its hypnotic efficiency is dose-related under noise interference; a 15 mg dose of zaleplon could provide significantly better sleep than a 10 mg dose of zaleplon.展开更多
Background This study aimed to evaluate the relationship between vestibular and auditory functions in pediatric patients with sudden sensorineural hearing loss(SSHL).Methods A total of 30 pediatric patients experienci...Background This study aimed to evaluate the relationship between vestibular and auditory functions in pediatric patients with sudden sensorineural hearing loss(SSHL).Methods A total of 30 pediatric patients experiencing unilateral SSHL between 5.9 and 13.0 years of age were enrolled in this study.Pure tone audiometry was evaluated prior to treatment initiation and again after one month of treatment.Prior to treatment initiation,vertigo symptoms were noted;then several vestibular function tests were conducted including caloric testing,ocular vestibular evoked myogenic potentials(o-VEMPs)and cervical vestibular evoked myogenic potentials(c-VEMPs).Associations between pre and post-treatment vestibular function and hearing threshold levels were analyzed.Results Initial hearing thresholds of children with vertigo were higher than thresholds of children without vertigo(92 dB vs 79 dB,F=0.033),while initial hearing thresholds of children with abnormal caloric test findings were higher than thresholds of children with normal caloric test findings(93 dB vs 67 dB.P=0.014).Cutoff values of hearing thresholds for those with vertigo symptoms and abnormal vestibular test results were 86.000-and 89.583-dB HL.respectively.Regarding prognosis,children with vertigo exhibited lower recovery rates than children without vertigo(33%vs 75%,P=0.025);recovery rates of children with abnormal caloric test results were lower than the overall recovery rate(25%vs 73%,respectively,P=0.039).Conclusion Assessments of vertigo symptoms and vestibular function are useful tools in predicting pediatric SwSHL patient disease severity and prognosis.展开更多
BACKGROUND Vestibular dysfunction(VH)is a common concomitant symptom of late peri-pheral vestibular lesions,which can be trauma,poisoning,infection,heredity,and neurodegeneration,but about 50%of the causes are unknown...BACKGROUND Vestibular dysfunction(VH)is a common concomitant symptom of late peri-pheral vestibular lesions,which can be trauma,poisoning,infection,heredity,and neurodegeneration,but about 50%of the causes are unknown.The study uses the information-motivation-behavioral skills(IMB)model for health education,effectively improve the quality of life,increase their self-confidence,reduce anxiety and depression,and effectively improve the psychological state of patients.AIM To explore the effect of health education based on the IMB model on the degree of vertigo,disability,anxiety and depression in patients with unilateral vestibular hypofunction.METHODS The clinical data of 80 patients with unilateral vestibular hypofunction from January 2019 to December 2021 were selected as the retrospective research objects,and they were divided into the control group and the observation group with 40 cases in each group according to different nursing methods.Among them,the control group was given routine nursing health education and guidance,and the observation group was given health education and guidance based on the IMB model.The changes in self-efficacy,anxiety and depression,and quality of life of patients with unilateral VH were compared between the two groups.RESULTS There was no significant difference in General Self-Efficacy Scale(GSES)scale scores between the two groups of patients before nursing(P>0.05),which was comparable;after nursing,the GSES scale scores of the two groups were higher than those before nursing.The nursing group was higher than the control group,and the difference was statistically significant(P<0.05).There was no significant difference in the scores of Hospital Anxiety and Depression Scale(HADS)and anxiety and depression subscales between the two groups before nursing(P>0.05).After nursing,the HADS score,anxiety,and depression subscale scores of the two groups of patients were lower than those before nursing,and the nursing group was lower than the control group,and the difference was statistically significant(P<0.05).After nursing,the Dizziness Handicap Inventory(DHI)scale and DHI-P,DHI-E and DHI-F scores in the two groups were decreased,and the scores in the nursing group were lower than those in the control group,and the difference was statistically significant(P<0.05).CONCLUSION Health education based on the IMB model can effectively improve patients'quality of life,increase self-efficacy of patients with unilateral vestibular hypofunction,enhance patients'confidence,enable patients to resume normal work and life as soon as possible,reduce patients'anxiety and depression,and effectively improve patients'psychological status.展开更多
The aim of this research was to investigate the effects of modafinil,a new wake-promoting agent,on vestibular function during 24 h sleep deprivation(SD)so as to provide experimental evidence for the rational use of th...The aim of this research was to investigate the effects of modafinil,a new wake-promoting agent,on vestibular function during 24 h sleep deprivation(SD)so as to provide experimental evidence for the rational use of this drug among air crew.Eight young,healthy male volunteers were exposed to two 24 h periods of continuous wakefulness during the crossover experiment.Initially,200 mg dose of modafinil was given,and one week later,a matching placebo was administered.The SD time started from 08:00 of the first day to 08:00 of the second day.Drugs were given at 0:00 on the second day.Vestibular function was tested at 21:00 on the first day and 1,3,5,7 h after drug administration.The accuracy of saccade tracking and gains in visual-vestibular optokinetic reflex(VVOR)and optokinetic nystagmus(OKN)in the placebo group decreased during 24 h SD,especially at 01:00–05:00 on the second day,while OKN gains in the modafinil group increased significantly.There were no significant differences in the other vestibular functional indices between the modafinil group and placebo group.The 24 h SD can influence vestibular function to a certain degree,but modafinil may improve OKN.展开更多
Objective:To investigate the effects of conductive hearing loss (CHL) on vestibular evoked myogenic potentials (VEMPs) using a simulated CHL model, and to provide the basis for future studies. Methods:Twenty-one healt...Objective:To investigate the effects of conductive hearing loss (CHL) on vestibular evoked myogenic potentials (VEMPs) using a simulated CHL model, and to provide the basis for future studies. Methods:Twenty-one healthy subjects were recruited in this study. We measured ocular VEMPs (oVEMPs) and cervical VEMPs (cVEMPs) in these subjects by air-conduction sound (ACS) stimulation. CHL was simulated later by blocking the right external auditory canal with a soundproof earplug to evaluate its impacts on VEMPs. Subjects' responses before simulated CHL served as the control, and were compared to their responses following simulated CHL. Results: oVEMPs following simulated CHL showed decreased response rate, elevated thresholds, attenuated amplitudes and prolonged N1 latencies compared with those before simulated CHL, and the differences were statistically significant. Similarly, cVEMPs following simulated CHL also showed decreased response rate, elevated thresholds and attenuated amplitudes, with prolonged P1 latencies compared with those before simulated CHL, although only differences in response rate, threshold and amplitude were significant. Conclusions:Conductive hearing loss affects the response rate and other response parameters in oVEMPs and cVEMPs.展开更多
目的 研发前庭功能信息化系统(vestibular function information system,VFIS),并实现临床应用。方法在医院信息化系统(hospital information system,HIS)的框架下,进行软件开发,通过构建VFIS可将医院各个前庭功能检查设备与HIS互联。结...目的 研发前庭功能信息化系统(vestibular function information system,VFIS),并实现临床应用。方法在医院信息化系统(hospital information system,HIS)的框架下,进行软件开发,通过构建VFIS可将医院各个前庭功能检查设备与HIS互联。结果VFIS运行平稳,实现多个品牌、10余项前庭功能检查与HIS联网,实现量表、检查结果数据化,可批量处理统计,实现受试者自动排序、叫号,电子版报告HIS共享,7种不同模板规范化报告及各个设备运行效率与工作量监测。结论 VFIS可有效提高临床与科研效率,实现检查数据永久保存,是安全可靠的前庭医学信息数字化应用系统。展开更多
Objective: To observe the otolithic function in sudden sensorineural hearing loss (SSHL) patients in different age groups by using vestibular evoked myogenic potentials (VEMPs). Methods: One hundred and seventy unilat...Objective: To observe the otolithic function in sudden sensorineural hearing loss (SSHL) patients in different age groups by using vestibular evoked myogenic potentials (VEMPs). Methods: One hundred and seventy unilateral SSHL patients were divided into 5 age groups. The 170 affected ears belonged to study group. The opposite healthy ears of 170 patients and 138 normal ears of 69 age and sex-matched normal people at different ages were set as control groups. Ocular VEMP (oVEMP) and cervical VEMP (cVEMP) both evoked by air-conducted sound (ACS) were employed for vestibular otolithic function assessment. Results: The response rates of cVEMP and oVEMP were lower and abnormal rates were higher in affected ears of SSHL patients compared to the opposite healthy ears and normal control ears in all age groups, except patients over 60 years. The response rates of VEMPs significantly declined with increasing age, not only in normal control ears, but also in affected and healthy ears of SSHL patients. But, the abnormal rates of VEMPs showed no significant difference in affected ears at different ages. Conclusions: Dysfunction of vestibular otolithic organs in SSHL patients presented respective features at different ages. It is necessary to consider the age when the clinicians determine the otolithic condition of patients based on the VEMPs.展开更多
基金a grant from the Beijing Hospitals Authority Youth Programme(grant:QML20230204)a grant from National Natural Science Foundation of China(No.82471179)a grant from the National Key Research and Development Plan(grant:2022YFC2402705)。
文摘Objective:To assess the effectiveness of machine learning in automating the prediction of vestibular abnormalities after cochlear implantation(CI)in patients with sensorineural hearing loss(SNHL),with the goal of developing a practical model that can accurately predict long-term vestibular function outcomes and identify associated risk factors.Methods:Clinical data,including imaging,vestibular evoked myogenic potentials(VEMPs),and auditory information,were collected from patients with sensorineural hearing loss(SNHL)before and after CI.The decision tree algorithm was employed to address missing values and screen pre-CI clinical features.Six machine learning methods were subsequently utilized to predict the relationships between the extracted features and post-CI vestibular dysfunction.The best-performing method determined the ranking of feature importance,which was regarded as risk factors for predicting symptoms and VEMPs results after CI.Results:Logistic regression models effectively predicted both post-CI vestibular dysfunction and abnormal cervical VEMP(c VEMP),with accuracies of 80%and 78%,respectively.The relative importance of the features,in descending order,was as follows:c VEMP latency,c VEMP amplitude,and residual hearing threshold.Moreover,the support vector machine(SVM)model attained an accuracy of 88%in predicting abnormal ocular VEMP(o VEMP)post-CI.For the SVM model,the feature importance ranking was as follows:o VEMP latency,o VEMP amplitude,and residual hearing threshold.Conclusions:This study successfully leverages machine learning techniques,specifically support vector machines(SVM)and logistic regression models,to predict the impact of CI on vestibular function.These predictive models provide valuable insights for presurgical planning and decision-making in CI procedures.Moreover,the findings highlight the critical risk factors associated with vestibular dysfunction,offering a robust reference for guiding vestibular rehabilitation strategies.
文摘Objective The main purpose of the present study was to describe the vestibular function in patients with auditory neuropathy (AN), and to assess their ability to maintain balance. Methods Vestibular function tests were performed on 32 patients with AN and 36 normal subjects including electronystagmopraphy(ENG) and static postrography(SPG). The results from the two groups were compared. Results Equilibrium function in patients with AN, was abnormal, compared to normal subjects. Conclusion Vestibular function tests, espe-cially static postrography, should be performed on patients with AN.
文摘Vestibular schwannomas(VS)are benign tumors of the vestibular nerve.The common first symptoms are hearing loss and tinnitus,followed by imbalance,vertigo,and facial nerve involvement.The subjective symptoms of VS patients are not consistent with the severity of vestibular lesions and the results of vestibular tests,which often interfere with clinicians’diagnoses.Thus,the main screening and diagnostic methods for VS are audiometry and magnetic resonance imaging(MRI),ignoring the evaluation of vestibular function at the source of pathological lesions.With the development and improvement of vestibular evaluation technology and its wide application in the clinic,modern vestibular examination technology can reflect the severity and frequency of vestibular lesions and compensation from multiple perspectives,providing an objective basis for the diagnosis and treatment of vestibular diseases.In this report,we review the results and characteristics of vestibular tests in VS patients and further clarify the clinical value of vestibular function assessment in the diagnosis and treatment of VS.
基金supported by a grant from the Military Medical Research Foundation of PLA,China (AWS14J011)
文摘Background:Military operation personnel often suffer from sleep difficulty because of their work requirements.In this study,we investigated the efficacy of zaleplon at two doses to induce afternoon-sleep under noise interference and its effects on psychomotor performance and vestibular function; we subsequently established the optimal dosage regimen for military operation personnel.Methods:Twenty-two healthy young male volunteers were recruited for the study.Eight subjects took 10 mg or 15 mg of zaleplon and placebo alternately and then were exposed to noise.Changes in polysomnography(PSG) indices,including sleep latency(SL),sleep efficiency(SE) and sleep structure,were recorded after drug administration.After awakening,the volunteers' subjective judgments of sleep quality and sleepiness were measured.Eight volunteers underwent 3 psychomotor performance tests at a one-week interval,and the psychomotor performance tests were conducted before and after taking zaleplon and placebo.Six volunteers participated in the vestibular function test session,and parameters,including optokinetic nystagmus(OKN),vestibular ocular reflex(VOR),visualvestibular ocular reflex(VVOR) and vestibular ocular reflex fixation suppression(VOR-Fix),were detected by the same experimental design as described above.The data of sleep observations were subjected to one-way variance analysis.Results:Compared with the placebo group,SL was shortened significantly,and the scores of subjective sleep quality and sleep depth were clearly increased in the zaleplon 10 mg group(P<0.05).Moreover,the SE and the percent of REM(rapid eye movement) sleep were increased remarkably in the zaleplon 15 mg group(P<0.01).Furthermore,the SE,percent of REM sleep and scores of subjective sleep depth in the zaleplon 15 mg group were significantly higher than in the zaleplon 10 mg group(P<0.05).The psychomotor performance did not change significantly after ingestion of 10 mg or 15 mg of zaleplon,whereas the OKN and VOR gains were lower in the two dose groups of zaleplon(P<0.05) and restored to normal 3h after drug ingestion.Conclusion:Zaleplon is an ideal hypnotic for military personnel,and its hypnotic efficiency is dose-related under noise interference; a 15 mg dose of zaleplon could provide significantly better sleep than a 10 mg dose of zaleplon.
基金supported by the Special Fund of the Pediatric Medical Coordinated Development Center of Beijing Hospitals Authority,No.XTYB201828Beijing Hospitals Authority'Ascent Plan,No.DFL20191201.
文摘Background This study aimed to evaluate the relationship between vestibular and auditory functions in pediatric patients with sudden sensorineural hearing loss(SSHL).Methods A total of 30 pediatric patients experiencing unilateral SSHL between 5.9 and 13.0 years of age were enrolled in this study.Pure tone audiometry was evaluated prior to treatment initiation and again after one month of treatment.Prior to treatment initiation,vertigo symptoms were noted;then several vestibular function tests were conducted including caloric testing,ocular vestibular evoked myogenic potentials(o-VEMPs)and cervical vestibular evoked myogenic potentials(c-VEMPs).Associations between pre and post-treatment vestibular function and hearing threshold levels were analyzed.Results Initial hearing thresholds of children with vertigo were higher than thresholds of children without vertigo(92 dB vs 79 dB,F=0.033),while initial hearing thresholds of children with abnormal caloric test findings were higher than thresholds of children with normal caloric test findings(93 dB vs 67 dB.P=0.014).Cutoff values of hearing thresholds for those with vertigo symptoms and abnormal vestibular test results were 86.000-and 89.583-dB HL.respectively.Regarding prognosis,children with vertigo exhibited lower recovery rates than children without vertigo(33%vs 75%,P=0.025);recovery rates of children with abnormal caloric test results were lower than the overall recovery rate(25%vs 73%,respectively,P=0.039).Conclusion Assessments of vertigo symptoms and vestibular function are useful tools in predicting pediatric SwSHL patient disease severity and prognosis.
文摘BACKGROUND Vestibular dysfunction(VH)is a common concomitant symptom of late peri-pheral vestibular lesions,which can be trauma,poisoning,infection,heredity,and neurodegeneration,but about 50%of the causes are unknown.The study uses the information-motivation-behavioral skills(IMB)model for health education,effectively improve the quality of life,increase their self-confidence,reduce anxiety and depression,and effectively improve the psychological state of patients.AIM To explore the effect of health education based on the IMB model on the degree of vertigo,disability,anxiety and depression in patients with unilateral vestibular hypofunction.METHODS The clinical data of 80 patients with unilateral vestibular hypofunction from January 2019 to December 2021 were selected as the retrospective research objects,and they were divided into the control group and the observation group with 40 cases in each group according to different nursing methods.Among them,the control group was given routine nursing health education and guidance,and the observation group was given health education and guidance based on the IMB model.The changes in self-efficacy,anxiety and depression,and quality of life of patients with unilateral VH were compared between the two groups.RESULTS There was no significant difference in General Self-Efficacy Scale(GSES)scale scores between the two groups of patients before nursing(P>0.05),which was comparable;after nursing,the GSES scale scores of the two groups were higher than those before nursing.The nursing group was higher than the control group,and the difference was statistically significant(P<0.05).There was no significant difference in the scores of Hospital Anxiety and Depression Scale(HADS)and anxiety and depression subscales between the two groups before nursing(P>0.05).After nursing,the HADS score,anxiety,and depression subscale scores of the two groups of patients were lower than those before nursing,and the nursing group was lower than the control group,and the difference was statistically significant(P<0.05).After nursing,the Dizziness Handicap Inventory(DHI)scale and DHI-P,DHI-E and DHI-F scores in the two groups were decreased,and the scores in the nursing group were lower than those in the control group,and the difference was statistically significant(P<0.05).CONCLUSION Health education based on the IMB model can effectively improve patients'quality of life,increase self-efficacy of patients with unilateral vestibular hypofunction,enhance patients'confidence,enable patients to resume normal work and life as soon as possible,reduce patients'anxiety and depression,and effectively improve patients'psychological status.
基金This study was supported by Aviation Medicine Research Grant of Air Force,People’s Liberation Army(KH0108011).
文摘The aim of this research was to investigate the effects of modafinil,a new wake-promoting agent,on vestibular function during 24 h sleep deprivation(SD)so as to provide experimental evidence for the rational use of this drug among air crew.Eight young,healthy male volunteers were exposed to two 24 h periods of continuous wakefulness during the crossover experiment.Initially,200 mg dose of modafinil was given,and one week later,a matching placebo was administered.The SD time started from 08:00 of the first day to 08:00 of the second day.Drugs were given at 0:00 on the second day.Vestibular function was tested at 21:00 on the first day and 1,3,5,7 h after drug administration.The accuracy of saccade tracking and gains in visual-vestibular optokinetic reflex(VVOR)and optokinetic nystagmus(OKN)in the placebo group decreased during 24 h SD,especially at 01:00–05:00 on the second day,while OKN gains in the modafinil group increased significantly.There were no significant differences in the other vestibular functional indices between the modafinil group and placebo group.The 24 h SD can influence vestibular function to a certain degree,but modafinil may improve OKN.
基金supported by grants from the National Natural Science Foundation of China, China (No. 81670945, 81541040)Fundamental Research Funds for the Central Universities, China (No. 2012jdhz13)+1 种基金Shaanxi Major International Cooperative Project, China (No. 2013KW-28)Key Science and Technology Program of Xi'an, China (No. SF1315(1))
文摘Objective:To investigate the effects of conductive hearing loss (CHL) on vestibular evoked myogenic potentials (VEMPs) using a simulated CHL model, and to provide the basis for future studies. Methods:Twenty-one healthy subjects were recruited in this study. We measured ocular VEMPs (oVEMPs) and cervical VEMPs (cVEMPs) in these subjects by air-conduction sound (ACS) stimulation. CHL was simulated later by blocking the right external auditory canal with a soundproof earplug to evaluate its impacts on VEMPs. Subjects' responses before simulated CHL served as the control, and were compared to their responses following simulated CHL. Results: oVEMPs following simulated CHL showed decreased response rate, elevated thresholds, attenuated amplitudes and prolonged N1 latencies compared with those before simulated CHL, and the differences were statistically significant. Similarly, cVEMPs following simulated CHL also showed decreased response rate, elevated thresholds and attenuated amplitudes, with prolonged P1 latencies compared with those before simulated CHL, although only differences in response rate, threshold and amplitude were significant. Conclusions:Conductive hearing loss affects the response rate and other response parameters in oVEMPs and cVEMPs.
文摘目的 研发前庭功能信息化系统(vestibular function information system,VFIS),并实现临床应用。方法在医院信息化系统(hospital information system,HIS)的框架下,进行软件开发,通过构建VFIS可将医院各个前庭功能检查设备与HIS互联。结果VFIS运行平稳,实现多个品牌、10余项前庭功能检查与HIS联网,实现量表、检查结果数据化,可批量处理统计,实现受试者自动排序、叫号,电子版报告HIS共享,7种不同模板规范化报告及各个设备运行效率与工作量监测。结论 VFIS可有效提高临床与科研效率,实现检查数据永久保存,是安全可靠的前庭医学信息数字化应用系统。
文摘Objective: To observe the otolithic function in sudden sensorineural hearing loss (SSHL) patients in different age groups by using vestibular evoked myogenic potentials (VEMPs). Methods: One hundred and seventy unilateral SSHL patients were divided into 5 age groups. The 170 affected ears belonged to study group. The opposite healthy ears of 170 patients and 138 normal ears of 69 age and sex-matched normal people at different ages were set as control groups. Ocular VEMP (oVEMP) and cervical VEMP (cVEMP) both evoked by air-conducted sound (ACS) were employed for vestibular otolithic function assessment. Results: The response rates of cVEMP and oVEMP were lower and abnormal rates were higher in affected ears of SSHL patients compared to the opposite healthy ears and normal control ears in all age groups, except patients over 60 years. The response rates of VEMPs significantly declined with increasing age, not only in normal control ears, but also in affected and healthy ears of SSHL patients. But, the abnormal rates of VEMPs showed no significant difference in affected ears at different ages. Conclusions: Dysfunction of vestibular otolithic organs in SSHL patients presented respective features at different ages. It is necessary to consider the age when the clinicians determine the otolithic condition of patients based on the VEMPs.
