Objective:To retrospectively analyze the results of auditory examination,vestibular function examination and laboratory examination of 63 patients diagnosed as vestibular neuritis.Methods:A total of 63 patients diagnosed with vestibular neuritis hospitalized in the Department of Otolaryngology, Head and Neck Surgery of the Third Affiliated Hospital of Sun Yat-sen University, from October 2012 to December 2022 were recruited. All patients met the diagnostic criteria for the 2022 Bárány association vestibular neuritis. Clinical data and the results of pure tone audiometry, electrocochleogram, video electronystagmogram, caloric test, cervical vestibuloevoked myogenic potential（cVEMP）, ocular vestibuloevoked myogenic potential（oVEMP）, video head impulse test（vHIT） was collected.A total of 63 age-and sex-matched healthy subjects in the physical examination center were randomly selected as the control group. The differences of blood indexs and lipid metabolism indexes between the two groups were compared. Results:In patients with vestibular neuritis, 50 out of 63 patients presented normal threshold in pure tone audiometry, 8 out of 63 patients had bilateral high-frequency sensorineural hearing loss and 5 out of 63 patients had unilateral mild high-frequency sensorineural hearing loss, 56 out of 63 cases completed the electrocochleogram, of which 3 cases had a binaural-SP/AP amplitude ratio≥0.4, 5 cases had monaural amplitude ratio ≥0.4. Fifty-five out of 63 patients completed the caloric test with CP values greater than 30% in all. The ratio of patients completed cVEMP, oVEMP and vHIT were 46 cases, 22 cases and 30 cases, respectively. 17 out of 63 cases completed all the four vestibular function tests. According to these tests, 49 patients could determine the extent of injury，including 27 cases with unilateral superior vestibular nerve injury, 21 cases with unilateral superior and inferior vestibular nerve injury and 1 case with unilateral inferior vestibular nerve injury. There were significant differences in neutrophil value（P<0.001）, lymphocyte value（P<0.005）, neutrophil/lymphocyte ratio（P<0.001） and apolipoprotein A1（P<0.001） between patient group and control group. Inflammatory markers were risk factors for patients with vestibular neuritis. The OR values of neutrophil value and blood neutrophil/lymphocyte ratio were 1.81（1.38-2.37, P<0.001） and 2.11（1.41-3.16, P<0.001）, respectively. Apolipoprotein A1 was a protective factor for patients with vestibular neuritis, and the OR value was 0.004（0.001-0.042, P<0.001）. Conclusion:Electrocochleogram could be used in vestibular neuritis patients with normal pure tone threshold to test whether there is hidden hearing loss in these patients. Neutrophil value, lymphocyte value, neutrophil/lymphocyte ratio and apolipoprotein A1 were correlated with vestibular neuritis. The Neutrophil value and neutrophil/lymphocyte ratio were risk factors for morbidity.
Humans ; Vestibular Neuronitis/physiopathology* ; Retrospective Studies ; Female ; Male ; Audiometry, Pure-Tone ; Hearing Loss, Sensorineural/physiopathology* ; Middle Aged ; Adult ; Vestibular Function Tests ; Vestibular Evoked Myogenic Potentials ; Aged

Objective:This study aimed to compare the effects of cochlear implantation（CI） on vestibular function in patients with large vestibular aqueduct syndrome（LVAS） and in patients with extremely severe deafness with normal inner ear structure. Methods:A total of 28 LVAS patients and 28 patients with normal inner ear structure who suffered from extremely severe deafness were selected. The parameters of caloric tests, bone conduction evoked cervical vestibular-evoked myogenic potentials（cVEMP）, bone conduction evoked ocular vestibular-evoked myogenic potentials（oVEMP） and video head impulse tests（v-HIT） were compared between the two groups before and after CI. The data were analyzed using SPSS 26.0 software. Results:There was no significant difference in the results of the preoperative caloric test, v-HIT, and oVEMP（P1, N1） between the LVAS group and the control group（P>0.05）. Compared to the control group, the LVAS group exhibited a shorter cVEMP P1[（13.41±0.71）ms vs （16.28±0.89）ms, P<0.000 1], shorter N1[（19.83±0.54）ms vs （28.18±1.56）ms, P<0.000 1], higher amplitude[（123.60±83.80）μV vs （73.92±79.85）μV, P=0.049 4] and higher oVEMP amplitude[（16.60±13.87）μV vs （9.96±10.47）μV, P=0.028 5] before CI. The abnormal rate of caloric test increased in both groups after CI（25.00% vs 57.14%, P=0.028 8, 32.14% vs 82.14%, P=0.000 3, respectively）. There was no significant difference in the v-HIT parameters in both groups before and after the operation. As for the LVAS group, there was no statistically significant difference in cVEMP and oVEMP induction rates before and after operation. In the control group, there was a decrease in cVEMP induction rate（96.42% vs 64.28%, P=0.005 2） and oVEMP induction rate（96.42% vs 57.14%, P=0.000 9） after CI. LVAS group showed a shorter cVEMP P1[（13.41±0.71）ms vs （10.30±0.60）ms, P<0.000 1]; shorter cVEMP N1[（19.86±0.53）ms vs （18.97±1.33）ms, P=0.004 7]; decreased amplitude[（124.50±84.86）μV vs （64.35±61.57）μV, P=0.001 0] and shorter oVEMP amplitude[（15.92±13.03）μV vs （9.16±9.20）μV, P=0.009 9] after CI. The oVEMP N1 in the control group was longer than that before operation[（11.73 ± 0.91）ms vs （13.35 ± 2.60）ms, P=0.019 6], whereas there was no significant difference in other VEMP parameters after CI. Conclusion:Before CI, there was no significant difference in the results of the caloric test and v-HIT between the LVAS group and the control group, but the LVAS group exhibited increased sensitivity to acoustic stimulation-induced myogenic potentials. After CI, the function of the semicircular canal was impaired in both groups in the low-frequency area, and remained largely unaffected in the high-frequency area. Additionally, the function of the otolith in the LVAS group was less affected than that in the control group after CI, which may be related to the fact that the enlarged vestibular aqueduct of the LVAS patients acted as the third window of the inner ear.
Humans ; Vestibular Aqueduct/physiopathology* ; Cochlear Implantation ; Male ; Female ; Vestibular Evoked Myogenic Potentials ; Deafness/physiopathology* ; Child ; Adolescent ; Adult ; Young Adult ; Hearing Loss, Sensorineural/physiopathology* ; Vestibular Function Tests

Objective:To evaluate the utility of the Rapid Axial Roll Test （RART）, Supine Roll Test （SRT）, and Lying-Down Test （LDT） in determining the affected semicircular canal in cases of horizontal semicircular canal benign paroxysmal positional vertigo （HSC-BPPV）. Methods:A total of 330 patients diagnosed with HSCBPPV from September 2022 to September 2023 were collected and divided into three groups based on the different positional tests received: ①SRT Group, ②LDT+SRT Group, ③RART+SRT Group. The trial was divided into two stages: LDT/RART for patients in the first stage, and SRT for patients in the second stage. The elicitation rate of nystagmus among the three groups was compared to evaluate the accuracy in determining the affected semicircular canal in HSCBPPV. Results:Nystagmus was elicited in 84.55% （279/330） of the patients by positional tests. The elicitation rate of nystagmus in the RART+SRT/LDT group was 94.55% （104/110）, in the LDT+SRT group it was 84.11% （90/107）, and in the SRT group it was 69.91% （79/113）. The differences among the three groups were statistically significant （χ²= 23.88, P<0.001）. In the ② and ③ groups, there was a statistically significant difference in the elicitation rate of nystagmus between stage Ⅰ （patients with LDT or RART） （χ²=43.842, P<0.001）. SRT was performed in the stage Ⅱ, and there was a statistically significant difference in nystagmus extraction rate between the two groups （χ² =4.690, P=0.030）. The difference in the proportion of agreement between stage Ⅰ（LDT or RART） and stageⅡ （SRT） in determining the affected side of the semicircular canal was also statistically significant （χ² =40.502, P<0.001）. For patients with a consistent diagnosis of the affected semicircular canal, the difference in cure rate was not significant （P=0.149）. The Kappa statistic indicated substantial agreement between RART and SRT in terms of eliciting nystagmus （agreement 96.36%, Kappa = 0.730, P<0.001）. Conclusion:RART and SRT show a high degree of agreement regarding the elicitation rate of nystagmus. RART is simple and safe, and it can effectively induce the characteristic nystagmus of HSC-BPPV, accurately identify the responsible semicircular canal and provide a more optimized examination protocol for clinical practice in HSCBPPV.
Humans ; Semicircular Canals/physiopathology* ; Benign Paroxysmal Positional Vertigo/diagnosis* ; Female ; Male ; Middle Aged ; Nystagmus, Pathologic/diagnosis* ; Vestibular Function Tests/methods* ; Aged ; Vertigo/diagnosis* ; Adult

Objective:To explore of auditory-vestibular function and inner ear imaging features of patients with Meniere's disease（MD） at different clinical stages. Methods:The clinical data of 110 patients with unilateral MD who were admitted from January 2023 to March 2024 were collected, and all patients were staged according to the results of pure tone hearing threshold test, including 13 patients with stage Ⅰ, 18 cases with stage Ⅱ, 65 cases with stage Ⅲ, and 14 cases with stage Ⅳ. All patients were tested for vestibular function, including caloric tests, vestibular evoked myogenic potentials（VEMPs）, vHIT and sensory integration tests（SOT）. The sites of endolymphatic hydrops were evaluated by intravenous endotogidolinium-based MRI, twenty-seven patients completed electrocochleography. Results:①The disease course time of patients with different stages was different, and the disease course time of stage Ⅰ and Ⅱ was shorter than that of stage Ⅲ and Ⅳpatients（P<0.05）. ②No statistical differences were found in clinical data or vestibular function between normal and abnormal ECochG groups（P>0.05）. ③The results of caloric tests showed that the UW% values of stage Ⅲ（45.5±14.79） and stage Ⅳ （51.57±22.44） were higher than those of stageⅠ（31.2±14.9） and stage Ⅱ（33.5±13.31）, there were statistically significant differences between stage Ⅰ and stage Ⅱ with stage Ⅲ and Ⅳ groups（P<0.05）, the total abnormal rate of cVEMP was 62.72%, there was a statistically significant difference between stageⅠand stage Ⅲ with the stage Ⅳ group（P<0.05）, the total abnormal rate of oVEMP was 71.82%, the difference between stage Ⅰ and stage Ⅳ group was statistically significant（P<0.05）. The total score of SOT comprehensive balance gradually decreased with the increase of clinical stage, and there was a significant difference between the stage Ⅰ and Ⅳ groups（H=26.08, P<0.01）, and there was a statistically significant difference in the rate of vestibular dysfunction of SOT between the two groups（χ²=6.7, P<0.05）. ④Patients with vestibular and cochlear endolymphatic hydrops, and patients with simple cochlear or vestibular had significantly differences in disease course time, clinical stages, UW% value of caloric test, abnormal rate of cVEMP and oVEMP, total SOT balance score, the rate of vestibular abnormality（P<0.01）. Among them, when the vestibular and cochlear endolymphatic hydrops are at the same time, the clinical stage of the patient is mainly stage Ⅲand Ⅳ. Conclusion:Auditory-vestibular and inner ear gadolinium-contrasted MRI examinations in clinical practice provide a supplementary reference for judging vestibular function and the type of endolymphatic hydrops.
Humans ; Meniere Disease/diagnostic imaging* ; Ear, Inner/physiopathology* ; Male ; Magnetic Resonance Imaging ; Female ; Middle Aged ; Vestibule, Labyrinth/diagnostic imaging* ; Adult ; Vestibular Evoked Myogenic Potentials ; Aged ; Audiometry, Pure-Tone ; Caloric Tests ; Vestibular Function Tests

Objective:To investigate the potential characteristic manifestations and application value of the Dynamic Visual Acuity Test（DVAT） in vestibular migraine（VM）. Methods:A total of 50 VM patients（case group） and 50 healthy subjects（control group） diagnosed at the Department of Otorhinolaryngology Head and Neck Surgery, First Hospital of Shanxi Medical University between November 1, 2023, and December 31, 2024, were enrolled. The case group underwent DVAT, video head impulse test（vHIT）, caloric test, and Dizziness Handicap Inventory（DHI） assessment, whereas the control group only received DVAT. Group-based analyses were conducted to examine the effect of age on Dynamic Visual Acuity Loss（DVALoss）, as well as the correlations of DVALoss with vestibular function tests and DHI scores. Results:DVALoss in the case group was significantly higher than that in the control group（P<0.001）. In both groups, age was significantly and positively correlated with DVALoss（P<0.001）. Within the case group, DVALoss was strongly and positively correlated with DHI scores（r=0.807, P<0.001）; it was negatively correlated with the vestibulo-ocular reflex（VOR） gain in vHIT, though without clinical significance, and showed no significant association with the caloric test. Age and DVALoss collectively accounted for 71.3% of the variance in DHI scores（R²=0.713）, with age exerting a relatively minor actual impact. Conclusion:DVAT can sensitively identify the core functional impairments of VM. DVALoss, as a direct functional reflection of the pathological mechanism of VM, is strongly correlated with DHI scores. Incorporating DVALoss into standardized assessments may provide an objective basis for the diagnosis and management of VM.
Humans ; Migraine Disorders/diagnosis* ; Visual Acuity ; Case-Control Studies ; Head Impulse Test ; Vestibular Function Tests ; Female ; Male ; Adult ; Vestibular Diseases/physiopathology* ; Middle Aged ; Caloric Tests

Objective:This study aimed to analyze the results of auditory and vestibular function tests in patients with unilateral vestibular schwannoma and explore their association with tumor size. Methods:Clinical data from 81 patients diagnosed with unilateral vestibular schwannoma who underwent pure-tone audiometry（PTA）, cervical and ocular vestibular evoked myogenic potentials（c/oVEMP）, as well as video head impulse test（vHIT）, and subsequently underwent surgical treatment, were retrospectively analyzed. Patients were categorized into groups based on tumor size: small （≤ 15 mm）, medium（16-30 mm）, and large （>30 mm）, determined by the maximum tumor diameter on contrast-enhanced MRI scans. Results:PTA results indicated hearing loss in 73 cases（90.1%）; vestibular function tests revealed abnormal rates for the anterior semicircular canal, horizontal semicircular canal, posterior semicircular canal, utricle, and saccule at 29.6%, 77.8%, 54.3%, 90.1%, and 92.6%, respectively. Statistically, no significant differences were found in preoperative hearing test results among patients in different groups（F=0.393, P=0.676）. However, significant differences were observed in horizontal semicircular canal gain（r=-0.248, P=0.025）, abnormal rates of horizontal semicircular canal catch-up saccades（r=0.507, P<0.001）, as well as cVEMP（χ²=15.111, P=0.004） and oVEMP thresholds（χ²=18.948, P<0.001） across varying tumor size groups. Conclusion:The extent of hearing loss in patients with vestibular schwannoma is not correlated with tumor size, whereas the degree of vestibular dysfunction demonstrates a correlation with tumor size.
Humans ; Neuroma, Acoustic/physiopathology* ; Retrospective Studies ; Audiometry, Pure-Tone ; Vestibular Function Tests ; Vestibular Evoked Myogenic Potentials ; Female ; Male ; Head Impulse Test ; Middle Aged ; Adult ; Semicircular Canals/physiopathology* ; Aged ; Hearing Loss/physiopathology*

Objective:Exploring the performance characteristics of spontaneous nystagmus（SN） in video-head impulse test（vHIT） and its possible effects on saccade. Methods:Vestibular function tests such as vHIT and SN were conducted in 48 patients with acute unilateral vestibulopathy（AUVP）. The saccade characteristics of vHIT in patients without SN and those with SN were analyzed, as well as the expression characteristics of SN in vHIT. Results:Among the 48 AUVP patients, there were 34 cases with SN, including 31 cases with saccade on the healthy side, 11 cases with both the same and opposite directions of eye movement, 19 with the opposite only, 1 with same direction only, and 3 cases without saccade. There were 14 patients without SN, of whom 10 showed saccade on the healthy side, including 4 with both eye movements in the same and opposite direction, 2 in the opposite direction only, 4 in the same direction only, and 4 without saccade. There is a correlation between reverse saccade on the healthy side and the presence of SN in patients. SN in vHIT can appear opposite to the direction of eye movement on the healthy side, while on the affected side it can appear the same as the direction of eye movement and may cause more discrete overt saccade. 32 patients in the acute phase（≤2 w）, 29 patients with SN, SN intensity of（6.7 ± 3.2） °/s, and 3 patients without SN. 16 cases in non acute phase（>2 w）, 5 cases with SN, SN intensity of（3.7 ± 2.1） °/s, and 11 cases without SN. In the acute phase there were 30 cases of saccade on the healthy side, 10 cases with both the same and opposite direction of eye movement, 18 cases with only the opposite direction, 2 cases with only the same direction and 2 cases without saccade. There is a correlation between the duration of the disease and the occurrence of reverse saccade on the healthy side. The intensity cut off point of SN for reverse saccade is 2.1 °/s in the healthy lateral semicircular canal vHIT. Conclusion:Compensatory saccades and SN waves with similar waveforms are mostly present in vHIT in AUVP patients. SN wave is in the opposite direction of the normal side and eye movement wave, and the affected side and dominant saccade direction are in the same direction and mixed together, which can affect the dispersion and amplitude of overt saccade in vHIT. Accurate identification of SN in vHIT of AUVP patients is not only the key factor to identify compensatory saccade, but also can provide help for the diagnosis and compensatory assessment of AUVP.
Humans ; Head Impulse Test/methods* ; Nystagmus, Pathologic/physiopathology* ; Saccades/physiology* ; Male ; Female ; Vestibular Diseases/physiopathology* ; Middle Aged ; Adult ; Eye Movements/physiology* ; Aged

Objective: To investigate the spontaneous nystagmus (SN) and the frequency characteristics of affected semicircular canals in patients with vestibular neuritis (VN). Methods: This is a cross-sectional study. A total of 61 patients with VN admitted to the Department of Neurology of Shanxi Bethune Hospital from June 2020 to October 2021, 39 were male and 22 were female, with a mean age of (46±13) years old and male to female ratio of 1.77∶1. According to SN characteristics, 61 patients were divided into non-nystagmus group(nSN), horizontal nystagmus group(hSN) and horizontal-torsional nystagmus group (htSN). Clinical data were collected, and SN, unilateral weakness (UW), directional preponderance (DP), and video head impulse test (vHIT) gain were used as observation indicators. Statistical analysis by SPSS23.0 software. Normal distributed quantitative data (age, semicircular canal gain, SN intensity) were expressed by x¯±s, non-normal distributed quantitative data (disease course, UW, DP) were expressed by M(Q₁,Q₃), qualitative data were expressed by rate and composition ratio, difference analysis by one-way ANOVA, rank sum test, Chi-square test or Fisher's exact probability method, considered by P value<0.05. Results: (1)The disease course of nSN, hSN and htSN was 7.0 (4.0, 12.5), 6.0 (3.5, 11.5), and 3.0 (2.0, 6.5) days respectively, and there were statistical differences (χ2=7.31,P=0.026).(2)The horizontal nystagmus intensity of htSN was (16.8±8.6)°/s, which was significantly higher than that of (9.8±4.7)°/s in hSN (t=3.71, P<0.001). There was no significant difference in the positive rate of UW between the three groups (P=0.690), and there was a significant difference in the positive rate of DP in the three groups (χ2=12.23, P=0.002). The horizontal nystagmor intensity in the htSN was positively correlated with the vertical nystagmus intensity (r=0.59, P=0.001).(3)The gain of the affected horizontal canal of the three groups was statistically different (F=8.28, P=0.001), and the gain of the horizontal canal of hSN and htSN was significantly lower than that of nSN (t=2.74, P=0.008; t=4.05, P<0.001); The gain of the affected anterior canal in the three groups was statistically different (F=5.32, P=0.008). The gain of the anterior canal in both nSN and hSN was significantly higher than that in htSN (t=3.09, P=0.003; t=2.15, P=0.036). The horizontal canal gain of htSN is positively correlated with the anterior canal gain (r=0.74, P<0.001).(4)The affected semicircular canals in the two groups with no-vertical-component nystagmus (nSN and hSN) and the htSN were counted. The composition ratio of the affected semicircular canals in the two groups was different (χ2=8.34, P=0.015). Conclusion: The occurrence of SN in patients with VN is related to many factors, such as the disease course, low and high frequencies, and the severity of the condition in the affected semicircular canal.
Humans ; Male ; Female ; Adult ; Middle Aged ; Vestibular Neuronitis ; Cross-Sectional Studies ; Semicircular Canals ; Nystagmus, Pathologic ; Head Impulse Test ; Disease Progression

Objective:This study aims to compare the examination results of the vestibular evoked myogenic potential（VEMP） and video head impulse testing（vHIT） in patients with vestibular neuritis（VN）, thus exploring the methods to distinguish superior and inferior vestibular nerve damages in VN patients, and their feasibility. Methods:A total of 25 patients with unilateral VN treated in the Otology Department of the First Hospital of Qinhuangdao from May 2018 to July 2021 were recruited. They were respectively tested for ocular VEMP（oVEMP）, cervical VEMP（cVEMP） and vHIT, and the examination results were analyzed. Results:Examination results of oVEMP showed that 96%（24/25） patients had one-ear abnormalities with the amplitude decline or no waveform introduced, and 4%（1/25） patient had no waveform introduced of both ears. The overall abnormal rate examined by oVEMP was 100%（26/26）. Examination results of cVEMP showed that 36%（9/25） patients had one-ear abnormalities with the amplitude decline or no waveform introduced, and 4%（1/25） patients had no waveform introduced of both ears. The overall abnormal rate examined by cVEMP was 40%（10/25）, and 60%（15/25） patients had normal waveforms of both ears. Examination results of vHIT showed that 100%（25/25） patients had semicircular canal gain decline of one side, 92%（23/25） had anterior Semicircular canal decline of one side, and 36%（9/25） had posterior semicircular canal decline of one side. VEMP and vHIT results were compared. Examination results of VEMP showed that 60%（15/25） VN patients had superior vestibular nerve damage, and 40%（10/25） had both superior and inferior vestibular nerve damages. Examination results of vHIT showed that 64%（16/25） VN patients had superior vestibular nerve damage, and 36%（9/25） had both superior and inferior vestibular nerve damages. There was no significant difference in the ratio of VN patients with superior and inferior vestibular nerve damages examined by VEMP or vHIT（χ²=0.085, P>0.05）. The matching ratio of VEMP and vHIT results was 80%（20/25）, and the non-matching ratio was 20%（5/25）. Conclusion:Consistent results obtained from both VEMP and vHIT can preliminarily identify the type of vestibular nerve damage. If their results are not consistent, it is recommended not to identify the scope of the vestibular nerve damage.
Humans ; Vestibular Neuronitis/diagnosis* ; Vestibular Nerve ; Head Impulse Test/methods* ; Semicircular Canals ; Vestibular Evoked Myogenic Potentials/physiology*

Humans ; Cochlear Implants ; Cochlear Implantation ; Vestibule, Labyrinth ; Vestibular Function Tests ; Vestibular Diseases