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    Evaluation of video head impulse test during vertiginous attack in vestibular migraine
    (PACINI EDITORE, 2022-01-01) Koc, Ahmet; Akkilic, Elvan Cevizci
    Objective. The aim of this study is to evaluate vestibular functions with video head impulse test (VHIT) and to understand the value of VHIT in differential diagnosis in patients with vestibular migraine (VM) during dizziness attack. Materials and methods. Two groups were enrolled in this study. The first consisted of 84 vestibular migraine patients, and second group of 74 healthy subjects. VHIT was applied to patients with VM during vertigo attack and the results were compared with the VHIT values applied to subjects in the control group. Results. The mean vestibulo-ocular reflex (VOR) in all semicircular canals in the VM group was lower than healthy individuals, but the results were not statistically significant. Refixa-tion saccades were found in 52.3\% of VM patients and in 10.2\% of healthy individuals. Conclusions. When patients with VM were evaluated with VHIT during vertiginous attack, VOR gain values were not different from healthy individuals, but the number of catch-up saccades were higher in VM patients, which indicates peripheral vestibular involvement. For differential diagnosis in patients with VM, vestibular tests should be performed dur-ing the vertigo attack. When evaluating VHIT results, the presence of refixation saccades should also be evaluated.
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    Determination of Anxiety, Health Anxiety and Somatosensory Amplification Levels in Individuals with Benign Paroxysmal Positional Vertigo
    (AVES, 2019-01-01) Ozdilek, Alper; Dikmen, Pinar Yalinay; Acar, Erkan; Aksoy, Elif Ayanoglu; Korkut, Nazim
    OBJECTIVES: Psychiatric cornorbidities may intensify peripheral vertigo and increase the number of repositioning maneuvers required. This study was designed to examine the relationship between benign paroxysmal positional vertigo (BPPV) and anxiety and assess its association with somatic amplification and health anxiety. MATERIALS and METHODS: Sixty patients with BPPV (43 women, 17 men
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    Comparison of the Efficacy of Video Head Impulse and Bi-Thermal Caloric Tests in Vertigo
    (SAGE PUBLICATIONS INC, 2021-01-01) Altunay, Zeynep Onerci; Ozkarakas, Haluk
    Objective: To compare video head impulse test (vHIT) and caloric test efficacy in decompensated and compensated vertigo patients and to further investigate whether vHIT alone can be used as a diagnostic tool in vertigo. Methods: This study included 25 patients diagnosed with vertigo and without any previous history of vertigo or hearing loss before their admission to our clinic. The control group consisted of 16 healthy adult volunteers. Patients were classified into 2 groups, compensated and decompensated. Video head impulse test and caloric tests were performed and the results were compared between the groups. Results: The difference of caloric test values between control-compensated groups and compensated-decompensated groups was statistically significant (P < .001, Pearson chi(2)). However, there was no statistically significant difference between the compensated and control groups according to vHIT gain asymmetry values (P = .087). In the very early stages of the disease with spontaneous nystagmus, the diagnostic significance of vHIT was similar to that of the caloric test. When both sides were compared, vHIT gain asymmetry values were close to the caloric test asymmetry values. In the compensated stage, caloric test was superior to vHIT in differentiating compensated vestibular pathologies. When vHIT sensitivity was evaluated according to the bi-thermal caloric test results, the sensitivity of the vHIT gain asymmetry value was 85.71\% and 23.08\% for decompensated and compensated patients respectively. Conclusion: In the early decompensated stages of the disease with spontaneous nystagmus, vHIT shows similar diagnostic accuracy to that of the caloric test. Since patients can tolerate vHIT more easily, our results suggest that vHIT can be considered as a primary evaluation method in the early (decompensated) period of the disease and should be preferred over the caloric test during the acute phase. Caloric test is more reliable at the compensated stage. Video head impulse test is inadequate in evaluating the compensated vestibular hypofunctional states after compensation has been restored.