Fakülteler / Faculties
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Item Evaluation of Mental Rotation Ability in Patients with Unilateral Benign Paroxysmal Positional Vertigo(2023) Polat, Ani Parabakan; Demir, Serpil; Kale, Ozge; Kuntman, Berna Deniz; Erbek, Hatice Seyra; 0000-0002-8453-6069; 38088328; AAJ-2445-2021BACKGROUND: Our study aims to determine whether there are differences in mental rotation abilities between unilateral benign paroxysmal positional vertigo patients and healthy controls using object-based mental rotation tasks. METHODS: Our study included 17 unilateral posterior canal benign paroxysmal positional vertigo patients and 20 healthy adults. Spontaneous nystagmus test, saccade test, and dynamic positional tests with videonystagmography and object-based mental rotation test with 2-dimensional images of cubes rotated at certain angles in 3-dimensional space were performed on the participants. The mental rotation test response time and the number of correct answers were compared between patients and controls. We also evaluated whether there was a relationship between saccade test parameters and mental rotation test parameters in our study. RESULTS: No significant relationship was found between benign paroxysmal positional vertigo patients and controls on any of the dependent measures (P >.05). When we evaluated the relationship between saccadic latency and accuracy and mental rotation test response time and number of correct answers in benign paroxysmal positional vertigo patients, no significant relationship was found (P >.05). CONCLUSION: Our findings show that unilateral, posterior canal benign paroxysmal positional vertigo does not affect object-based mental rotation performance. In our study, no correlation was found between saccadic function and mental rotation ability in unilateral benign paroxysmal positional vertigo patients.Item Evaluation of Benign Paroxysmal Positional Vertigo Following Le Fort I Osteotomy(2017) Deniz, K.; Akdeniz, S. S.; Koc, A. O.; Uckan, S.; Ozluoglu, L. N.; 0000-0002-2150-0237; 0000-0002-3798-7326; 27856148; AAI-8020-2021The Le Fort I osteotomy is widely used to correct dentofacial deformities. Benign paroxysmal positional vertigo (BPPV) is a common vestibular end organ disorder characterized by short, often recurrent episodes of vertigo. Head trauma is one of the known causes of BPPV. During pterygoid osteotomy, the surgical trauma induced by percussion with the surgical mallet and osteotomes can displace otoliths into the semicircular canal, resulting in BPPV. The aim of this study was to evaluate the potential risk of occurrence of BPPV in individuals undergoing Le Fort I osteotomy. Twenty-three patients were included in this study. The Dix-Hallpike manoeuvre, positional tests using electronystagmography, and vestibular evoked myogenic potential (VEMP) tests were performed 1 week before surgery (TO), 1 week after surgery (T1), and 1 month after surgery (T2). The results were compared statistically. BPPV was observed in three patients. Eleven patients had nystagmus at the T1 evaluation and seven at the T2 evaluation. The difference between the TO and T1 time points was statistically significant (P = 0.001). BPPV is a possible complication of Le Fort I osteotomy. Surgeons should be aware of this complication, and the diagnosis of BPPV should be considered in patients who have undergone Le Fort I osteotomy.Item Clinical Interpretation of Positional Nystagmus Provoked by both Dix-Hallpike and Supine Head-Roll Tests(2022) Hizal, Evren; Jafarov, Sabuhi; Erbek, Seyra H.; Ozluoglu, Levent N.; 35894530BACKGROUND: Both the Dix-Hallpike test and the supine head-roll test can provoke positional nystagmus in a group of benign paroxysmal positional vertigo patients, including but not limited to those with multiple canal involvement. This study aimed to determine the incidence and interpret the clinical significance of positional nystagmus provoked by both the Dix-Hallpike and the supine head-roll tests. METHODS: The results of video-nystagmography sessions recorded in the computer database that included both the Dix-Hallpike and the supine head-roll tests were examined. RESULTS: The records belonging to 2880 video-nystagmography sessions of 2387 patients were examined. Nystagmus was detected in both the Dix-Hallpike and the supine head-roll tests of 131 (5.5%) patients. The video images belonging to 142 session records of 122 patients were accessed and further analyzed. The diagnosis was posterior canal BPPV in 9.0%, and lateral canal BPPV in 62.3%. More than one canal was involved in 3.3%, one rehabilitation maneuver was performed in 75.0%, and recurrence was observed in 7.4% of those patients. CONCLUSION: In both geotropic and apogeotropic variants of lateral canal BPPV, nystagmus can be observed during the Dix-Hallpike test in addition to the supine head-roll test. In patients with posterior canal benign paroxysmal positional vertigo, nystagmus can also be observed in the head-roll test. To reach a correct and comprehensive diagnosis and apply appropriate treatment in benign paroxysmal positional vertigo, the Dix-Hallpike test and the head-roll test should be completely performed on both sides, and the results of those tests must be interpreted concomitantly.Item Benign Paroxysmal Positional Vertigo Following Electroconvulsive Therapy(2019) Kansu, LeylaPatients with severe major depression most commonly undergo electroconvulsive therapy (ECT). Although this procedure is usually safe and the complication rates are very low, some side-effects and medical complications are observed. The reported adverse effects are generally minor in severity, and vertigo is one of these complications. We presented a case of benign paroxysmal positional vertigo (BPPV) occurring after ECT and aimed to discuss the pathophysiological mechanism of this condition. To the best of our knowledge, there are no other case reports regarding the co-occurrence.