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Erika Vörös

Publications and source records attributed to Erika Vörös.

9 recordsLinked to original sources
PubMed2006

Correlations between clinical symptoms, working memory functions and structural brain abnormalities in men with schizophrenia.

Thirteen male patients with schizophrenia and thirteen male normal control subjects were compared by magnetic resonance imaging (MRI) on volumes of the straight gyrus (SG), anterior cingulate gyrus, middle frontal gyrus, hippocampus, third ventricle, cavum septi pellucidi, total brain volume and intracranial volume. In addition, neuropsychological tasks were used to measure working memory and executive functions. Healthy volunteers and schizophrenic patients showed no significant differences in mean values for volumes of regions of interests. In the case of the SG, we found a significant difference in laterality: the tendency toward left dominance in healthy volunteers changed to significant right dominance in patients. The schizophrenic patients showed lower performance in working memory tasks, and strongly significant group differences were observed in measures of neurological signs assessed by the Neurological Evaluation Scale (NES). Negative symptoms correlated with the level of spatial working memory and executive functions. Negative symptoms also correlated with the volume of the right hippocampus, while the rate of anhedonia negatively correlated with the relative volume of the left SG.

Adult↗
PubMed2005

[The role of MR angiography in predicting operative results of microvascular decompression in patients with trigeminal neuralgia].

INTRODUCTION AND OBJECTIVES: The results of medium-term outcome of microvascular decompression (MVD) for trigeminal neuralgia are presented. The authors compare the preoperative 3-dimension magnetic resonance angiography (MRA) results with the surgical findings during MVD. Information, provided by MRA, are evaluated regarding to the prognostic significance in typical TN, atypical TN and persistent idiopathic facial pain (PIFP). The significance of clinical symptoms and the type of neurovascular compression (NC) are investigated in respect of the postoperative success and recurrent symptoms. METHODS AND RESULTS: MRA was performed in 310 consecutive patients with TN and PIFP. The MRA image was positive in 179 (58%) of the 310 cases. 68.2% of the typical TN group, 49.2% of the atypical TN group and 3.2% of the PIFP group were positive. MVD was performed in 116 of the MRA positive cases. Four years following the MVD, 69% of the patients gave an excellent and 23% a good result. The surgical findings corresponded with the MRA images. NC could be ruled out in the background of PIFP. The rate of recurrent symptoms following MVD is 21% in the typical TN group while it is 41% in the atypical TN group. The pure venous compression showed 57% pain-recurrence rate following MVD. CONCLUSIONS: The clinical symptoms and preoperative MRA carry considerable information, which can predict the outcome of the MVD and the rate of recurrent symptoms. Atypical TN and venous compression are bad prognostic factors.

Adult↗
PubMed2004

Favorable early outcome of carotid artery stenting without protection devices.

BACKGROUND AND PURPOSE: Protection devices are increasingly used in carotid artery stenting. However, no randomized trial has been conducted to evaluate the efficacy of such devices, and arguments have also been formulated against their routine use. We set out to investigate the complication rates associated with carotid artery stenting performed without protection devices. Applicability of covered stents in the carotid system was also evaluated. METHODS: Between January 2001 and July 2003, 245 consecutive patients (260 hemispheres) underwent carotid artery stenting. No protection devices were applied. Covered stents were implanted in 31 (12.1%) cases. The incidence of complications during the intervention and the subsequent 30-day follow-up period was recorded. RESULTS: The technical success rate was 98.8%. One postprocedural nonneurological death (0.4%) occurred. Neurological complications (inclusive of transient ischemic attacks) were observed in 14 cases (5.4%). The rate of major complications (death, major stroke, and myocardial infarction) was 1.6% among the symptomatic and 1.5% among the asymptomatic cases. The rate of minor strokes was 3.2% in the symptomatic and 1.5% in the asymptomatic group. Of the neurological complications, 64.3% occurred postprocedurally. No ipsilateral neurological complications were detected in the subgroup treated with covered stents. CONCLUSIONS: Carotid artery stenting without protection devices appears to be safe. Most of the neurological complications could not have been prevented with protection devices, because they occurred after the intervention. The application of covered stents may reduce the rate of embolization-related complications in the periprocedural period.

Aged↗
PubMed2003

[Odontoidectomy in the treatment of medically refractory, neurogenic hypertension].

The authors present a case of medically refractory, neurogenic hypertension where the MR examination revealed an odontoid compression of the anterior medulla as a consequence of a basilar impression. Following transoral odontoidectomy and craniocervical fixation, the blood pressure in the 24-year-old woman returned to normal, and 1 year postoperatively she remains normotensive and off all medication. This reported case provides further support to the theory that there is a subgroup of patients who may have a vascular compression of the medulla with no neurological symptoms other than hypertension.

Adult↗
PubMed2002

Complex hallucinations following occipital lobe damage.

Visual hallucinations may accompany many neurological and psychiatric disorders. A common localization principle is that lesions to the early sensory cortices lead to elementary hallucinations, whereas complex perceptual experiences are related to the pathology of higher-level cortical regions. We report the case of a patient who experienced complex, non-stereotyped, multimodal (visual and somatosensory) hallucinations following an acute ischaemic vascular lesion in the right medial occipital lobe. This illustrates that the phenomenology of hallucinations not necessarily reflects the exact localization of cerebral pathology. Instead, the damaged area may serve as a focus of an abnormally activated neuronal network.

Aged↗
PubMed2002

Dissociation between attentional set shifting and habit learning: a longitudinal case study.

We report a patient (ST) with predominant damage to the right neostriatum, caused by a rare cerebral angiitis. The testing procedure was focused on attentional set shifting (Wisconsin Card Sorting Test; WCST) and habit learning (probabilistic classification learning; PCL). ST showed impairments in the WCST, digit span backward, alphabet span, and PCL procedures, whereas he exhibited spared IQ, short-term verbal memory, object recognition, episodic and semantic memory. After 1 month of steroid therapy, there was a significant improvement in the WCST, digit span backward and alphabet span tests, whereas PCL remained severely impaired. The three control patients with damage to the parietal lobe displayed normal learning rates in PCL. These results suggest that separate frontostriatal mechanisms exist for attentional set shifting and habit learning.

Adult↗