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Biomedical subjects

A Oliveros

Publications and source records attributed to A Oliveros.

At least 19 recordsLinked to original sources
PubMed1998

[Electroclinical and neuroimaging studies in epilepsy].

INTRODUCTION AND MATERIAL: During 54 months, we have studied the electro-clinical and neuroimaging features in outpatients with active epilepsy. Each patient was interviewed for one of us. Then, we have reviewed the medical records about both the clinical featuring. EEG and neuroimaging (NI) studies and seizures frequency (SF) outcome. Differences in crude proportions were assessed by chi 2 test for independence by 2 x 2 tables. RESULTS AND CONCLUSIONS: It has been 207 patients with 49 +/- 19.6 years of mean age at review. Partial seizures was significantly related with both a higher SF at onset and politherapy. Also, with a focal EEG distribution but only in case of complex partial seizures. Abnormal NI was significantly more frequent in oldest patients. A greater proportion of patients were in politherapy in four situation: SF at onset > 1 by day, a focal EEG distribution, duration of epilepsy longer than 20 years and age of onset lesser than 60 years. A 37.2% was seizures-free in the last year and in 34% the SF was improved a 50% or more from the beginning. A significantly greater proportion of patients was following with seizures in four cases: when the SF at onset has been > or = 1 by day, being partial seizures, women and having politherapy.

Adult↗
PubMed1997

[Multiple sclerosis as a cause of partial complex epilepsy].

INTRODUCTION: Although the epileptic seizures (ES) have been described on patients with multiple sclerosis (MS), the causal relationship is not clear. Seizure's prevalence in this illness is low and their apparition concerning the MS course is variable, but more common after MS diagnosis. The predominant crises are generalized or partial with secondary generalization; the partial complex seizures have rarely referred. CLINICAL CASES AND CONCLUSIONS: We presented two patients with ES in the MS course. In the first case is arrived to MS diagnosis upon appearing the crisis, having presented two previous cerebral lesions in another level. In both cases demyelinating lesion was located in the temporal lobe, agreeing with EEG anomaly and seizures type.

Adult↗
PubMed1997

[Complex partial seizures: the localization value of automatisms].

INTRODUCTION: The clinical findings in complex partial crises may help our understanding of the different foci and vias of epileptogenesis. MATERIAL AND METHODS: We analyse automatisms and findings on EEG and neuroimaging in 151 patients with different types of partial epilepsy, seeking to establish a possible correlation between the type of automatism and cerebral localization. RESULTS AND CONCLUSIONS: The relative frequency of automatisms was: oro-alimentary 30%, mimicking 11%, gestures 35%, ambulatory 19% and verbal 13%. There was a statistically significant difference between the type of automatism and the topography of the EEG and neuroimaging findings. There were more gesture and oro-alimentary automatisms in patients with temporal anomalies, both on EEG and on neuroimaging, than in those with extratemporal alterations.

Adolescent↗
PubMed1997

[Grouped crises and status epilepticus in complex partial epilepsy].

INTRODUCTION: In complex partial crises (CPC) some characteristics of the way in which they occur may be helpful in localizing the focus of origin in the cerebral cortex. Thus, the appearance of any kind of status epilepticus will not predominate depending on the origin of the epileptic focus, but the complex partial state will be rare when the origin is temporal and more frequent when the origin is frontal. The appearance of CPC in a cluster form is, on the other hand, characteristic of crises originating in the frontal lobe. MATERIAL AND METHODS: We review the clinical history of 151 epileptics with CPC, evaluating the way in which the crises appear, together with other clinical data. We define the start of the crisis in a specific lobe, when this was the site of maximum voltage of the epileptic anomaly or of maximum phase opposition. RESULTS: 10% of the patients showed grouping of their CPC; in the remainder the appearance was isolated, 15% showed status epilepticus at some point in their illness. We found a statistical difference when relating this to the anomalous topography of the EEG; between 15% and 42% more patients with status epilepticus were counted when the topography of the anomaly in the EEG was extratemporal. There was also between 37.2% and 76.4% more patients with cluster crises in the cases with an extratemporal focus.

Adolescent↗
PubMed1996

[Etiology in complex partial epilepsy. I. Neuroimaging studies].

With the appearance of MR, a great advance has been made in the study of the aetiology of epilepsy. This technique can show anomalies not detected in CT scans, obtain images of multiple planes, improve the differentiation of cerebral tissues and allow improved visualization of the temporal lobe, making it very useful in the study of patients with complex partial crises (CPC). We studied 151 epileptics with CPC by means of CT scan and MR in all cases; the anomolous topography was the same in all cases, but the diagnosis was not. In patients with a previously normal CT scan, on MR anomalies were detected in 24 cases. We found a statistical differences on evaluation of the MR anomaly depending on whether the CT scan was normal or abnormal. Statistical differences were also found when there were a greater number of anomalies on MR depending on the frequency of crises at the onset of the disorder.

Adolescent↗
PubMed1996

[Etiology in complex partial epilepsy. II. Correlation between EEG topography and neuroimaging].

Neuro-imaging studies (NI) in patients with complex partial seizures (CPC) demonstrate the epileptogenicity of a more or less localized underlying lesion. Correlation with the topography of the EEG focus permits affirmation of the origin. We analyze anomalies on NI and on the EEG of 151 patients with CPC. The EEG was abnormal in 128 and showed a unilateral epileptic focus in 117. NI was focal and unilateral in 72 of the 102 abnormal cases. Topographic correlation was 78.5%. This close correlation in our series makes us consider the localized lesions to be the probable aetiological factor.

Adult↗
PubMed1996

[Prognostic value of data from clinical, EEG and neuroimaging assessment in epilepsy with complex partial seizures].

INTRODUCTION: The well-known etiology, length of active epilepsy, partial or mixed seizure types and high frequency of seizures before treatment relate with a worst prognosis for seizures control. We have attempted to prove these factors in our study. METHOD: We analyzed the electro-clinical characteristics, evolution and etiology of seizures in 151 patient with several type of partial epilepsy. Subsequently, we related the estimated improvement with diverse variables. RESULTS: A significant statistically difference appeared as for seizures frequency at onset, existing among 15% to 44.3% more patient in which the frequency descended to more of 50% when the initial frequency was more than one to the month. Upon relating the improvement with the MR anomaly also appeared significant difference: there was between 7.9% and 73.7% more patient with hypersignal on long TR sequences in the group that did not decrease the frequency of their crisis to more than 50%.

Adolescent↗
PubMed1992

[Neuro-Behçet. Clinical study of 9 patients].

The authors evaluated the type of neurological involvement existing in patients with Behçet's syndrome over a 10 year period. Nine patients presenting several bouts with neurological symptomatology were studied with headache being clinically predominant followed in order of frequency by sensitive and/or motor ictal pictures. Suspected localization was both hemispheric and brain stem. No diagnostic test was able to clear up the origin of the lesions in the first stages of the disease, however the authors were able to observe, upon performing visual and/or brain stem evoked potentials and nuclear magnetic resonance at the time of the control, that several asymptomatic patients showed alterations in both tests. Thus, the value of the above mentioned tests must be emphasized in the follow up and control of neuro-Behçet's disease.

Adult↗
PubMed1991

[Primary intraventricular hemorrhage in the adult].

Forty two instances of primary intraventricular hemorrhage (PIVH) out of overall 592 cases of intracerebral hemorrhages diagnosed by CT in 1980-1989, to evaluate the general prognosis attributable to PIVH and its factors. The mortality rate was 23.8%, and persistent residual disability was small or absent in 59.5% of patients. The prognosis was influenced by the clinical status at admission and the magnitude of ventricular bleeding. We conclude that PIVH is comparatively benign.

Adolescent↗
PubMed1980

Anti-factor IX circulating anticoagulant and immune thrombocytopenia in a case of Takayasu's arteritis.

A 38-year-old male with proven Takayasu's arteritis presented, in a routine investigation, with thrombocytopenia, prolonged whole blood clotting time and activated partial thromboplastin time. Further studies demonstrated low levels of factor IX caused by a circulating anticoagulant. Immunological studies revealed an IgG (with kappa chains predominance) nature of this. Corticoid therapy decreased but did not suppress the anticoagulant activity. Since similar coagulation abnormalities have been described in collagen diseases, this observation is in support of this etiology to be considered in Takayasu's arteritis.

Adult↗