Vestibular Disorders Limited to the Vertical Semicircular Canals.

 The advent of the video head impulse test (vHIT) enables the study of each one of the six semicircular canals. In the present study, certain patients present disorders related only to the vertical semicircular canals, and they were carefully evaluated.  To investigate vestibular disorders limited to the vertical semicircular canals.

Practical approach for lateral canal benign paroxysmal positional vertigo.

Benign paroxysmal positional vertigo (BPPV) of the lateral semicircular canal is a well-recognized condition, even though there are controversies about the repositioning maneuvers and their efficacy. In recent decades, several maneuvers have been proposed for treating both apogeotropic and geotropic variants of lateral canal BPPV. Our purpose is to discuss a practical approach to this pathology with the Zuma maneuver.

The role of the reversed nystagmus during Zuma maneuver in patients treated for geotropic lateral canal benign paroxysmal positional vertigo.

Introduction: The geotropic variant of lateral canal BPPV occurs due to free floating otoconia in the non ampullary arm of this canal. Several repositioning maneuvers were effective to treat patients with this variant. We have previously proposed that the Zuma maneuver, first described for apogeotropic lateral canal BPPV, could also be effective for the geotropic variant as we believe that adopting a single maneuver may help the neurotological clinical practice.

Zuma Modified Maneuver as a Treatment to Geotropic Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo.

 Benign Paroxysmal Positional Vertigo (BPPV) is the most common vestibular disorder, resulting from detached otoliths that migrate to one of the semicircular canals - canalolithiasis - or one of the cupulas - cupulolithiasis. The present study is related to lateral canal BPPVs, which may be either geotropic or apogeotropic. The geotropic variant of lateral semicircular canal benign paroxysmal positional vertigo (LC-BPPV) is attributed to free floating particles in the posterior arm of the lateral semicircular canal.

Cochlear Implants in Patients with Fluctuant or Progressive Hearing Loss on the Better Ear.

 Cochlear implants have been proposed for cases of unilateral hearing loss, especially in patients with tinnitus impairment. Several studies have shown that they result in definite improvement of sound localization and speech understanding, both in quiet and noisy environments. On the other hand, there are few references regarding cochlear implants in patients whose better ears present hearing loss.

Management of Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo.

Benign paroxysmal positional vertigo (BPPV) is the most common cause of peripheral vestibular vertigo. It is caused by free-floating otoconia moving freely in one of the semicircular canals (canalolithiasis) or by otoliths adhered to the cupula (cupulolithiasis). The posterior canal is the most common canal affected, followed by the lateral canal.

An Algorithm for the Diagnosis of Vestibular, Cerebellar, and Oculomotor Disorders Using a Systematized Clinical Bedside Examination.

The bedside examination associated with their clinical history remains the most critical means to accurately diagnose the cause for most of the signs and symptoms related to pathology of the cerebellum and vestibular system in patients presenting with dizziness and imbalance. This paper focuses on those critical bedside examinations, suggests when laboratory testing might be useful to confirm the clinical suspicion, and considers the shared neural circuitry within the visual and vestibular systems to offer an algorithmic approach in conducting the clinical bedside examination.

Apogeotropic variant of horizontal semicircular canal benign paroxysmal positional vertigo: Where are the particles?

The apogeotropic variant of horizontal semicircular canal benign paroxysmal positional vertigo (HC-BPPV) is attributed to free floating particles in the anterior arm of the lateral semicircular canal - particles attached to the cupula facing the canal or particles attached to the cupula facing the utricle. Zuma e Maia described a new treatment for both canalithiasis of the anterior arm of the horizontal semicircular canal (HC) and cupulolithiasis of the HC. Seventeen patients with apogeotropic HC-BPPV were enrolled and treated with Zuma's Maneuver.

Seasonality and solar radiation variation level in benign paroxysmal positional vertigo.

Background: Several studies have shown that the incidence of benign paroxysmal positional vertigo (BPPV) presents seasonal variations and there is evidence that the variation in time is dependent on the patient's amount of vitamin D.

Objectives: This is a retrospective study to verify if there is a correlation between the incidence of BPPV and the level of solar radiation, essential for the synthesis of vitamin D in the skin.

Material And Methods: This study comprised 214 patients with BPPV seen from 2012 to 2017, in a city Latitude: -30.

Behavior of the Posterior Semicircular Canal After Dix-Hallpike Maneuver.

The objective of the present study is to analyze the quantitative vestibulo-ocular responses in a group of patients with benign paroxysmal positional vertigo (BPPV) canalolithiasis and compare these data with the data of the tridimensional biomechanical model. This study was conducted on 70 patients that presented idiopathic posterior semicircular canal canalolithiasis. The diagnosis was obtained by Dix-Hallpike maneuvers recorded by videonystagmograph.

Assessment of the vestibuloocular reflex in fighter pilots with the video head impulse test.

Conclusion: There were no changes in the function of the six semicircular canals in active fighter pilots, through the use of the video head impulse test (vHIT). These results suggest that the vestibuloocular reflex (VOR) works well at the high frequencies related to the natural head movements in this population.

Objectives/hypothesis: The vestibular function in pilots has been reported as being different from that of other normal subjects.

The video head impulse test.

Conclusion: Additional research is needed to validate the importance of the video head impulse tests (vHIT), but it provides an important contribution to the evaluation of anterior and posterior semicircular canal disorders.

Objectives: To share observations of the vHIT test in clinical neurotology and to discuss the significance of the study findings.

Methods: This study comprised 200 patients with a clinical history of vestibular disturbances who were submitted to a vHIT including all six semicircular canals.

Vertigo in elderly patients: a review of 164 cases in Brazil.

The author conducted a study to identify and categorize those vestibular disorders that were the most common among elderly patients at his private clinic over a 20-year period. He reviewed the records of 735 patients aged 65 to 90 years. The most common diagnosis was vertigo and/or disequilibrium, which occurred in 164 patients (22.

Vertigo and dizziness in elderly patients with neurological disorders.

Objective: To evaluate the frequency of central vestibular disorders, vertigo and dizziness in patients aged 65 to 90 years.

Methods: We analyzed 735 patients in this age range seen consecutively from January 1990 to December 2009.

Results: A total of 32 patients had central vestibular disorders, and 11 had neurological disorders diagnosed by imaging.

Active head rotation in benign positional paroxysmal vertigo.

Unlabelled: Benign Positional Paroxysmal Vertigo (BPPV) is one of the most common vestibular diseases and the active head rotation test one of the most modern methods of vestibular function assessment.

Aim: this study aims to verify if the active head rotation test may reveal signs of horizontal and/or vertical vestibulo-ocular reflex dysfunction in vertigo patients suspected for BPPV.

Study Design: retrospective series study.

Unusual cases of delayed endolymphatic hydrops.

The objective of this report is to emphasize the clinical features of delayed endolymphatic hydrops in comparison with Ménière's disease. Four cases were selected from a series of 16 examined between the years 1993 and 2005, due to their unusual characteristics. A short clinical history and significant tests are presented for each of the four cases.

Dissociated eye movements: a clinical study.

Conclusions: Dissociation of eye movements is an important sign of functional or organic lesions of the central vestibular system. Qualitative differences in the movements of each eye appear to be more serious than quantitative differences.

Objective: To determine the significance of dissociated nystagmus in neurotological diagnosis.

Laser therapy in the treatment of dentine hypersensitivity.

Cervical dentine hypersensitivity is the most frequent complaint among reported odontalgias. Thus, this study evaluated the effectiveness of two types of lasers (660 nm wavelength red, and 830 nm wavelength infrared) as dentine desensitizers, as well as both the immediate and late therapeutic effects in individuals 25 to 45 years of age. A total of 40 teeth with cervical exposure were treated in 4 sessions.