Clinical Neuroscience

[Interdisciplinary approach of vestibular system impairment]

PONGRÁCZ Endre

MARCH 20, 2011

Clinical Neuroscience - 2011;64(03-04)

[In the first part of this review the definition of vertigo/dizziness was discussed. The major difference between the two signs is the exsistence of the direction, which is specific for vertigo. Dizziness is a frequent complaint in the clinical practice. Its frequency is increasing with advance of age, to intimate the play of declining cognitive process in the pathogenesis of its. The popular health significance of vertigo is in the rowing number of the patients. The onset of the most cases with acute vertigo appears between secundums and minutes so the patients will be provided in circumstances of emergency department. First of all three form schould be take into account: neuronitis vestibularis, benign paroxysmal positional vertigo and Meniere syndrome. Without tipical periferal signs of vertigo, central cause should be searched, principally stroke (lysis possibility). The differential diagnose of the different dizzeness/vertigo forms according to the elapsed time of the onset or congenital and acquired nystagmus was created in tables. The recommendations of the therapy of acute and chronic dizziness/ vertigo syndroms are, lack of results of evidence based trials doubtful. The more often used drugs based on clinical trials are discussed as vinpocetine, betahistine and piracetam. The in vitro and in vivo data suggest that the last molecule is eligible to use both in periferal and central type of vertigo syndroms.]

COMMENTS

0 comments

Further articles in this publication

Clinical Neuroscience

[About the future of neurology - answer to Csaba Ertsey]

HALÁSZ Péter, RAJNA Péter

Clinical Neuroscience

[Congress calendar]

Clinical Neuroscience

[CADASIL and other hereditary small vessel diseases of the brain - Increasingly diagnosed conditions underlying familial ischaemic stroke and dementia]

GUNDA Bence, HUGUES Chabriat, BERECZKI Dániel

[CADASIL (Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy) has recently gained great interest in vascular neurology as the most common heritable cause of stroke and vascular dementia in adults. This autosomal dominant small vessel disease of the brain - unlike the sporadic, hypertensive form - appears already in adult midlife in the absence of vascular risk factors with ischemic episodes and progressive dementia, its first manifestation can be migraine with aura, and is often associated with psychiatric disturbances. The magnetic resonance imaging (MRI) changes showing a characteristic pattern may precede symptoms by more than a decade. The identification of the mautation of the NOTCH 3 gene responsible for the disorder encoding a transmembrane receptor of vascular smooth muscle cells - has given great impetus on research to understand the molecular and vascular pathogenesis of the disease. The special importance of this latter lies in the fact that CADASIL provides a pure genetic model for subcortical cerebral ischemia and vascular dementia without the confounding factors of comorbidities and advanced age. Thus insights into CADASIL may help us better understand the more common sporadic forms as well. Moreover CADASIL is one of the best studied examples of secondary migraine. Currently we have far less knowledge on other forms of hereditary small vessel disease of the brain such as CARASIL, HERNS, CRV, HVR, PXE etc. Neurologists are becoming more and more familiar with CADASIL, and with the wider availability of MRI it is increasingly diagnosed. However the disorder is still probably underrecognised. This review aims to summarize our current knowledge on CADASIL with special emphasis on diagnostic and diffrential diagnostic points for the practising neurologist.]

Clinical Neuroscience

[Anti-NMDA-receptor encephalitis: description of the syndrome in line with presentation of the first Hungarian patient]

HOLLÓDY Katalin, CSÁBI Györgyi, LÁNG Anikó, RÓZSAI Barnabás, KOMÁROMY Hedvig, BORS László, ILLÉS Zsolt

[In the majority of cases, anti-NMDA (N-methyl-D-aspartate) receptor encephalitis is a severe, but treatable disorder, therefore early diagnosis and adequate therapy are very important. It should be suspected in children and young women, who develop acute psychiatric symptoms and seizures. During the course of the disease severe encephalopathy, agitation, hallucinations, orofacial dyskinesias, prolonged cognitive disturbance, autonomic symptoms can be observed and akinetic mutism develops. EEG shows diffuse slowing. Brain MRI is normal or unspecific. Elevated protein, pleiocytosis and oligoclonal bands can be present in the CSF. Detection of NMDA-receptor antibodies in sera or CSF confirms diagnosis. We present the case of a 15-year old girl, who fully recovered within two months after steroid treatment and repeated plasma exchange. Ovarian teratoma has not been detected.]

Clinical Neuroscience

[Why to say good-bye? Where are we going? Let us adapt!]

KATONA Ferenc

All articles in the issue

Related contents

Clinical Neuroscience

[What happens to vertiginous population after emission from the Emergency Department?]

MAIHOUB Stefani, MOLNÁR András, CSIKÓS András, KANIZSAI Péter, TAMÁS László, SZIRMAI Ágnes

[Background – Dizziness is one of the most frequent complaints when a patient is searching for medical care and resolution. This can be a problematic presentation in the emergency department, both from a diagnostic and a management standpoint. Purpose – The aim of our study is to clarify what happens to patients after leaving the emergency department. Methods – 879 patients were examined at the Semmel­weis University Emergency Department with vertigo and dizziness. We sent a questionnaire to these patients and we had 308 completed papers back (110 male, 198 female patients, mean age 61.8 ± 12.31 SD), which we further analyzed. Results – Based on the emergency department diagnosis we had the following results: central vestibular lesion (n = 71), dizziness or giddiness (n = 64) and BPPV (n = 51) were among the most frequent diagnosis. Clarification of the final post-examination diagnosis took several days (28.8%), and weeks (24.2%). It was also noticed that 24.02% of this population never received a proper diagnosis. Among the population only 80 patients (25.8%) got proper diagnosis of their complaints, which was supported by qualitative statistical analysis (Cohen Kappa test) result (κ = 0.560). Discussion – The correlation between our emergency department diagnosis and final diagnosis given to patients is low, a phenomenon that is also observable in other countries. Therefore, patient follow-up is an important issue, including the importance of neurotology and possibly neurological examination. Conclusion – Emergency diagnosis of vertigo is a great challenge, but despite of difficulties the targeted and quick case history and exact examination can evaluate the central or peripheral cause of the balance disorder. Therefore, to prevent declination of the quality of life the importance of further investigation is high.]

Clinical Neuroscience

[Analysis of patients applying for emergency treatment with vertigo related symptoms]

VARGA Csaba, NAGY Ferenc, DRUBITS Katalin, LELOVICS Zsuzsanna, VARGA Győrfi Krisztina, OLÁH Tibor

[Objective - Analyzing the medical record data of patients with the main symptom of vertigo in “Kaposi Mór” Hospital’s Emergency Department. Method - Retrospective evaluation of patients’s medical history with vertigo related diagnoses according to BNO classification. Results - In the year of 2010, 18 000 patients were presented to ED. In 471 cases the symptoms were vertigo related which makes up 3% of the total. Almost half, 46% of these patients were brought in by ambulance medical car. The ratio of women was twice as high as of the men. One fifth, 19% of patients with vertigo gained admission to the ward and 81% of them were discharged in 24 hours. According to the interviews, 4 types of vertigo have been identified: “whirling style” vertigo in 37% of the cases, dizziness in 33% of the cases, presyncope in 12% and „light headedness” in 9%. The remaining 9% couldn’t be classified. Conclusion - Vertigo is common presenting symptom in emergency department, however it rarely indicates severe condition. The diagnostic value of vertigo classification based on history and brain CT result in identifying the severity of the background condition is questionable. We found that in recognizing the cases which need prompt intervention, thorough neurological examination and the clarification of the vertigo’s circumstances proved to be helpful.]

Lege Artis Medicinae

[VERTIGO IN NEUROLOGICAL DISEASES]

FAZEKAS András

[Peripheral and central vestibular syndromes are characterized by the combination of the four symptoms such as: vertigo, nystagmus, imbalance and nausea. Vertigo is the disturbance of the cortico-spatial orientation. Nystagmus is regarded as a secondary symptom caused by direction specific disequilibrium of the vestibulo- ocular reflex. Imbalance is caused by the abnormal activation of vestibulo-spinal pathways. Nausea is due to the activation of the medullary vomiting center. It is important that clinicians can establish an adequate diagnosis and differentiate vertigo and dizziness. The author - without the aim of completeness - discusses the types of vertigo caused by the most important disorders of the central nervous system, emphasizing the role of general practitioners in the diagnostic and therapeutic algorhytm.]

Clinical Neuroscience

[Vertigo - comorbidity with psychiatric disorders]

FAZEKAS András

[Vertigo is one of the most common symptom and complaint in the clinical practice. The differential diagnosis can only be attained by a careful interdisciplinary way of thinking and activity, given the fact that the vestibular, neurological and psychiatric disorders - considered as pathogenic factors - are being present simultaneously in triggering the symptoms, and there can be overlaps between the certain pathological processes. The author deals with the co-morbidity of the vertigo and the psychiatric symptoms - anxiety, panic-disorder -, pointing out the common neurobiological and neurophysiological factors in the background of the symptoms, emphasizing the importance of the SSRI-s in the restoration of the serotonerg dysfunction.]

Clinical Neuroscience

[Paradigm shift in management of patients with vertigo and imbalance]

MIKE Andrea, TAMÁS T. László

[Dizziness is one of the most common causes of medical visits. Management of the dizzy patient may be challenging both for the general practitioner, in emergency departments, and special clinics, as behind a seemingly homogeneous clinical presentation several very different etiologies may occur. Research of the last two century enriched our knowledge about physiology and pathophysiology of the vestibular system. Much knowledge is now available about the labyrinth being able to sense head motions and gravity, processing of afferent vestibular stimuli, reflectory oculomotor and postural control, or recovery of the vestibular system. Based on scientific results new beside tests have been introduced including provocation maneuvers for detecting ectopic otoliths in different semicircular canals, head impulse test to examine function of the vestibulo-ocular reflex, and the HINTS+ battery for differentiation of peripheral or central origin of an acute vestibular syndrome. Technical innovations like videooculography and vestibular evoked myogenic potentials enable us to selectively and side-specifically examine the function of all six semicircular canals and two otolith organs. Pathomechanism of disorders with vertigo and dizziness became more clear resulting in the development or amendment of diagnostic criteria of several vestibular disorders including vestibular migraine, Menière’s disease, benign paroxysmal positional vertigo, persistent postural-perceptual dizziness, bilateral vestibulopathy. Broader knowledge about the pathomechanism promoted the development of new therapeutic methods like different repositioning maneuvers in benign paroxysmal positional vertigo, pharmaceutical therapies, vestibular rehabilitation, and psychotherapy. We aimed to summarize the novelties in the field of oto-neurology.]