Clinical Neuroscience

[Mental disorders after stroke (treatment of post-stroke depression with moclobemide)]

VARGA Dániel1, PÉK Márta1, NAGY Zoltán1

MAY 20, 1997

Clinical Neuroscience - 1997;50(05-06)

[Post-stroke states are usually characterized by residual neurologic symptoms and movement performance, while psychological disturbances remain hidden. Stroke patients frequently present mood disturbances, cognitive decline, anxiety disorders, sometimes serious schizophorm and paranoid states. Among them, post-stroke depression is the most common and possibly amenable form to therapeutic intervention. Depression has negative effect on rehabilitation, quality of life and even long term survival. Biological, psychological and social factors play an important role in the etiology of post stroke depression. The psychotherapeutic approach is so far undeveloped; considering drug therapy, in the past decade tricyclic drugs have been replaced by newly developed second generation antidepressants with lower side-effects profile. In our experience 6-week treatment with moclobemide in 33 patients resulted in symptom reduction in 80%. Appropriate therapy extends the possibilities of rehabilitation, improves the quality of life, and reduces mortality.]

AFFILIATIONS

  1. Agyérbetegségek Országos Központja, Országos Pszichiátriai és Neurológiai Intézet, Budapest

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Clinical Neuroscience

[Effects of Propofol and Thiopental on median nerve somatosensory evoked potentials and cerebral blood velocity]

NAGY Ferenc, DÓCZI Tamás, BÜKI András, MÉSZÁROS István, HUDVÁGNER Sándor, KASÓ Gábor, PFUND Zoltán

[Effects of induction doses of thiopental and propofol on median nerve somatosensory evoked potentials and cerebral blood flow velocity were investigated in 50 patients suffering from degenerative lumbar spine diseases before operation and during anaesthesia. The propofol influences the cerebral electric activity and the blood flow velocity to a less extend than thiopental. Based on our results we prefer to employ propofol during neurosurgical procedures when using intraoperativ somatosensory evoked potentials and/or transcranial Doppler monitoring. ]

Clinical Neuroscience

[Three dimensional time of flight magnetic resonance imaging in trigeminal neuralgia]

VÖRÖS Erika, KUNCZ Ádám, SZENTGYÖRGYI Réka, MENCSER Zsolt, KARDOS Lilla, MILASSIN Péter

[The purpose of our study was to evaluate the role of three dimensional time of flight magnetic resonance angiography in detection of neurovascular compression in patients with trigeminal neuralgia. 53 patients (26 males, 27 females mean age 57 years) with trigeminal neuralgia underwent 3D TOF MRA. Examinations were performed on 0.5 T Elscint Gyrex V Dlx equipment. The imaging parameters were 33-38/9/25 TR/TE/flip angle with 30-50 mm slab thickness and 1-1.5 mm slice thickness. Contrast material was administered in every case. Maximum intensity projection and thin slice reconstruction (pixel by pixel) were performed in three standard directions (axial, coronal and sagittal). To evaluate the presence or absence of vascular contact, we used both the source slices and reconstructed pictures. Vascular contact with the trigeminal nerve in the entry zone was identified on the symptomatic side in 26 cases (superior cerebellar artery in 20, superior cerebellar artery and vein in one, anterior inferior cerebellar artery in 2, basilar artery or a vein in 1-1 case) and on the asymptomatic side in 3 cases (superior cerebellar arteries). No contact was detected in 24 patients. The examination was not of diagnostic value in three cases, because of head motion artefacts. Veins were better visualized on the contrast pictures. Microvascular decompression sec. Janetta was performed in 9 cases. The surgical and neuroradiological findings were identical in every case. Complete pain relief or significant diminshing of the symptoms were achieved following surgery in all patients. 3D TOF MRA is a useful method in demonstration of vascular contact with the trigeminal nerve at the entry zone, which is valuable information in planning surgical treatment for patients with trigeminal neuralgia.]

Clinical Neuroscience

[Uremic polyneuropathy - clinical and electrophysiological analysis]

NAGY Ferenc, PFUND Zoltán, CZOPF József

[Uremic polyneuropathy is a consequence of chronic renal failure, and is one of the symptoms of the uremic syndrome. Its etiology is not well known, several neurotoxins are presumed as pathogenic factors. Both axonal lesions and demyelinization are involved in the development of neuropathy 66 electrophysiological studies (EMG, ENG) in 57 uremic patients were performed in our department between 1978 and 1988. The correlation between clinical and electrophysiological findings are discussed. Clinical or neurographic and myographic signs of neuropathy were found in 50/57 of the patients. The number of electrophysiological signs changes parallely with the severity of uremic neuropathy. There was significant correlation between the decreased plasma calcium levels, the elevated plasma phosphate levels, and the severity of neuropathy. The electrophysiological symptoms are more frequent in cases of rapidly progressive neuropathy. Peripheral nerve pathophysiology reveals a combination of segmental demyelinization and axonal degeneration.]

Clinical Neuroscience

[The genetic diagnosis of leber's hereditary optic neuropathy]

KOMOLY Sámuel, KARCAGI Veronika, HORVÁTH Rita, ERIC A. Shoubridge, KATHERINE Fu, SOMLAI Judit, HAJDA Márta

[We observed the occurence of Leber's hereditary optic neuropathy associated mitochondrial point mutations in patients with bilateral optic neuropathy. DNA samples isolated from peripheral venous blood by the phenol/chloroform method were tested with the help of PCR for the pathogenic Leber's hereditary optic neuropathy associated mitochondrial point mutations. From 14 patients suffering from bilateral visual impairment Leber's hereditary optic neuropathy associated mitochondrial point mutations were found in 5 cases. The patients were previously treated with optic neuritis or with toxic optic neuropathy. By testing the relatives of the patients some asymp tomatic Leber positive cases were observed, too. The diagnosis of Leber's hereditary optic neuropathy is based on the occurence of mitochondrial point mutations. To test for these mutations can help in the clinical practice in diagnosing bilateral optic neuropathies. In patients with the pathogenic Leber mutations the development of the clinical symptoms does not occure necessarily, however the other mechanisms determining the clinical picture are not known so far.]

Clinical Neuroscience

[Anatomical basis of endoscopic ventriculostomy - clinical application of the free hand technique]

RESISCH Róbert, PATONAY Lajos, JULOW Jenő

[The anatomical basis of the "free hand” technique in treatment of occlusive internal hydrocephalus, viz. endoscopic ventriculostomy, is discussed. In 25 cadavers the cella media of the lateral ventricle was endoscopically approached through a frontoparietal (15 cases), frontal (5) and biportal coronal (5) burr hole. Using the identified structure of the choroid plexus the foramen of Monro was investigated. Via this route, the endoscope advanced into the 3rd ventricle, then the localization of ventricular perforation was determined by first visualizing the mamillary bodies and the infundibular recess. Ventricular anatomy was also investigated in 50 fixed human brains. Between October and December 1995 endoscopic ventricular fenestration using a frontoparietal burr hole was performed on 3 patients without stereotactic localization. In one case the serious condition of the patient, in the other two cases the enormous supratentorial hydrocephalus required the application of the free hand technique. ]

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The evaluation of the relationship between risk factors and prognosis in intracerebral hemorrhage patients

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Objective - Patients were assessed in terms of risk factors, hematoma size and localization, the effects of spontaneous intracerebral hemorrhage (ICH) on mortality and morbidity, and post-stroke depression. Materials and methods - The present study evaluated the demographic data, risk factors, and neurological examinations of 216 ICH patients. The diagnosis, volume, localization, and ventricular extension of the hematomas were determined using computed tomography scans. The mortality rate through the first 30 days was evaluated using ICH score and ICH grading scale. The Modified Rankin Scale (mRS) was used to determine the dependency status and functional recovery of each patient, and the Hamilton Depression Rating Scale was administered to assess the psychosocial status of each patient. Results - The mean age of the patients was 65.3±14.5 years. The most common locations of the ICH lesions were as follows: lobar (28.3%), thalamus (26.4%), basal ganglia (24.0%), cerebellum (13.9%), and brainstem (7.4%). The average hematoma volume was 15.8±23.8 cm3; a ventricular extension of the hemorrhage developed in 34.4% of the patients, a midline shift in 28.7%, and perihematomal edema, as the most frequently occurring complication, in 27.8%. Over the 6-month follow-up period, 57.9% of patients showed a poor prognosis (mRS: ≥3), while 42.1% showed a good prognosis (mRS: <3). The mortality rate over the first 30 days was significantly higher in patients with a low Glasgow Coma Scale (GCS) score at admission, a large hematoma volume, and ventricular extension of the hemorrhage (p=0.0001). In the poor prognosis group, the presence of moderate depression (39.13%) was significantly higher than in the good prognosis group (p=0.0001). Conclusion - Determination and evaluation of the factors that could influence the prognosis and mortality of patients with ICH is crucial for the achievement of more effective patient management and improved quality of life.

Clinical Neuroscience

Alexithymia is associated with cognitive impairment in patients with Parkinson’s disease

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Cognitive dysfunction (CD) is a common non-motor symptom of Parkinson’s disease (PD). Alexithy­mia is a still poorly understood neuropsychiatric feature of PD. Cognitive impairment (especially visuospatial dysfunction and executive dysfunction) and alexithymia share com­mon pathology of neuroanatomical structures. We hypo­thesized that there must be a correlation between CD and alexithymia levels considering this relationship of neuroanatomy. Objective – The aim of this study was to evaluate the association between alexithymia and neurocognitive function in patients with PD. Thirty-five patients with PD were included in this study. The Toronto Alexithymia Scale–20 (TAS-20), Geriatric Depression Inventory (GDI) and a detailed neuropsychological evaluation were performed. Higher TAS-20 scores were negatively correlated with Wechsler Adult Intelligence Scale (WAIS) similarities test score (r =-0.71, p value 0.02), clock drawing test (CDT) scores (r=-0.72, p=0.02) and verbal fluency (VF) (r=-0.77, p<0.01). Difficulty identifying feelings subscale score was negatively correlated with CDT scores (r=-0.74, p=0.02), VF scores (r=-0.66, p=0.04), visual memory immediate recall (r=-0.74, p=0.01). VF scores were also correlated with difficulty describing feelings (DDF) scores (r=-0.66, p=0.04). There was a reverse relationship bet­ween WAIS similarities and DDF scores (r=-0.70, p=0.02), and externally oriented-thinking (r=-0.77,p<0.01). Executive function Z score was correlated with the mean TAS-20 score (r=-62, p=0.03) and DDF subscale score (r=-0.70, p=0.01) Alexithymia was found to be associated with poorer performance on visuospatial and executive function test results. We also found that alexithymia was significantly correlated with depressive symptoms. Presence of alexithymia should therefore warn the clinicians for co-existing CD.

Clinical Neuroscience

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Clinical Neuroscience

Electrophysiological investigation for autonomic dysfunction in patients with myasthenia gravis: A prospective study

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