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Search Results: 1 - 10 of 1701 matches for " Terra Bustamante "
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Hemimegalencephaly and epilepsy: an overview
Terra-Bustamante, Vera C.;Machado, Hélio R.;Sakamoto, Américo C.;
Journal of Epilepsy and Clinical Neurophysiology , 2006, DOI: 10.1590/S1676-26492006000300010
Abstract: introduction: cerebral cortical development is a highly complex process influenced by environmental, genetic and functional abnormalities. hemimegalencephaly (hme) is a rare brain malformation that involves overgrowth of one hemisphere. clinically macrocephaly, mental retardation, contralateral hemiparesis, hemianopsia and intractable epilepsy may be present. diagnosis is mainly done with image and clinical findings. mri typically reveals an enlarged cerebrum involving at least one lobe, with a thickened cortex; broad gyres; abnormal gray-white matter differentiation with abnormal sign; neuronal heterotopia, ventricle asymmetry, and basal ganglia and internal capsule abnormalities. electroencephalographic abnormalities usually involve the affected hemisphere, with an asymmetric amplitude of the normal, age-related rhythms; slow, rhythmic or fast activity and multifocal unilateral or bilateral high-amplitude spikes and spike-wave complexes. histopathologic changes include abnormal gyrification, with loss of cortical lamination, neuronal heterotopia, gliosis, large bizarre neurons and balloon-cells. the presence of highly refractory seizures in patients with hme is an important factor to consider epilepsy surgery in these patients. methods: multiple surgical techniques are actually being used for hemispheric disconnection. we discuss here the main surgical techniques that are used for hemispheric disconnection. conclusions: postsurgery outcome for hme may be not as good as that for focal lesions with approximately 40% of patients being seizure free, but the main indication for surgery in these patients may be preventing additional cognitive injury and developmental delay. surgical complications are observed in most of the series of patients with hme submitted to hemispheric surgery. minimal resections may contribute do diminish surgical complications.
Ictal and interictal SPECT in patients with frontal lobe epilepsy.- This paper was awarded the ADAC Prize at the Brazilian Congress of Nuclear Medicine, Recife, Brazil, December 1998.
Wichert-Ana, Lauro.,Kato, Mery .,Terra Bustamante, Vera Cristina.,Rodrigues Velasco, Tonicarlo.
Alasbimn Journal , 1999,
Abstract: The frontal lobe seizures present variable clinical and electroencephalographic features that play some difficulties in the presurgical work-up for epilepsy. The aim of the present study is to determine the role of ictal and interictal SPECT in the localization of the epileptogenic zone in frontal lobe epilepsies. We evaluated 13 patients, 6 men and 7 women, with mean age of 16yr, and with medically intractable frontal lobe seizures. All patients were submitted to ictal SPECT and 11 also to interictal scans. Ictal SPECT studies were contributive in 54% of patients, and nonlateralized and nonlocalized, or contralateralized in the remaining patients. Interictal SPECT showed normal perfusion in 45,5% of patients, hypoperfusion localized in the suspected epileptogenic zone in 45,5%, and diffuse findings in the other 9%. We conclude that the sensitivity of ictal and interictal SPECT studies in frontal lobe epilepsies is lower than that for temporal lobe seizures, thus confirming previous data.
Leverage and the Maturity Structure of Debt in Emerging Markets  [PDF]
Cesario Mateus, Paulo Terra
Journal of Mathematical Finance (JMF) , 2013, DOI: 10.4236/jmf.2013.33A005
Abstract:

The aim of this paper is to analyse for a multi-country large emerging market sample the choice between debt and equity simultaneously with the decision between short- and long-term debts. In order to investigate the joint decision among leverage and maturity, we examine an unique sample of 986 firms and 13,490 firm-year observations from Latin America and 686 firms and 7919 firm-year observations from Eastern Europe for the period 1990-2003. We employ dynamic panel data analysis using Generalized Method of moments. The empirical results support three main findings. First, the cross-effects between leverage and maturity behave exactly the opposite between Latin America and Eastern Europe sub-samples. Capital structure and debt maturity are policy complements in Latin America and substitutes in Eastern Europe. Second, there is a significant dynamic effects component in the determination of leverage and maturity. Finally, adjustment to the target, maturity is by no means costless and instantaneous with firm’s facing moderate adjustment costs.

Dieta cetogênica no tratamento de epilepsias farmacorresistentes
Nonino-Borges, Carla Barbosa;Bustamante, Vera Cristina Terra;Rabito, Estela Iraci;Inuzuka, Luciana Midoro;Sakamoto, Américo Ceike;Marchini, Júlio Sérgio;
Revista de Nutri??o , 2004, DOI: 10.1590/S1415-52732004000400011
Abstract: epilepsy is a chronic condition that affects 0.5% to 1.0% of the population in developed countries. this prevalence may be higher in developing countries. a significant proportion of the patients, nearly one third of them will have their condition evolved into a stage of uncontrolled crises, in some cases, surgical procedure may be indicated. however, for several patients, surgery is not possible. in these cases, ketogenic diet is a therapeutic option, especially for children. it is supposed that nearly one third of the patients that use the ketogenic diet, experience seizure control or reduction in the number of seizures. the current study presents methods of preparing and using ketogenic diet. the diet must be individualized, considering the recommendations for calorie intake, amounts of fat, protein and specific carbohydrates. patients must be monitored, since side effects related to the diet can occur. parents and caregivers must be informed about ketogenic diet and how it works; so that greater acceptability and adherence to this therapy may be achieved.
Ethnicity, Labor and Indigenous Populations in the Ecuadorian Amazon, 1822-2010  [PDF]
Robert Wasserstrom, Teodoro Bustamante
Advances in Anthropology (AA) , 2015, DOI: 10.4236/aa.2015.51001
Abstract: According to most recent research, Indians in Ecuador’s Amazonian region (the Oriente) lived outside of modern markets and political systems until around 40 years ago. But this view obscures the essential role of indigenous labor in earlier cycles of extractivism and exploitation. Beginning in the 18th century, lowland Quichua and other ethnic groups were defined as much by their place within long-distance economic networks as they were by their languages or cultures. Using newly discovered historical records and other sources, we can now reconstruct the ebb and flow of commodity booms in Amazonian Ecuador and their impact on indigenous populations.
La actualidad del pensamiento político de Kant
Terra,Ricardo;
EPISTEME , 2008,
Abstract: in this paper, we seek to show the present force of kant?s political thought, exposing four themes: 1) the philosophy of history as a learning process of the political-juridical gains and losses; 2) the maintenance of a tense relation between the liberal and the democratic perspectives (in other words, the articulation between human rights and popular sovereignty; 3) aufkl?rung and the formation of the public sphere; 4) cosmopolitan right against colonialism.
Once ensayos filosóficos
Constanza Terra
Aisthesis , 2011,
Abstract:
Topological Amenability
Terra Antonio
Mathematics , 2011,
Abstract: Let G be a locally compact topological group and X a compact space with continuous G-action. The main result of this essay states that the following statements are equivalent : 1) The action of G on X is topologically amenable ; 2) Every dual (G, X)-module of type C is a relatively injective Banach G-module ; 3) There is a G-invariant element in the double dual of C(X, L1(G)).
Stable solutions of equations with a quadratic gradient term
Joana Terra
Mathematics , 2013,
Abstract: We study existence and regularity properties of stable positive solutions to the nonvariational problem - Delta u - b(x)|nabla u|^2 = lambda g(u) in a bounded smooth domain. In the case where b is constant, by means of a Hopf-Cole transformation, the problem can be taken to a variational form, for which there are classical results of Crandall-Rabinowitz, Mignot-Puel and Brezis-Vazquez. In this paper we obtain results for a general bounded function b=b(x) which coincide with the classical ones in the constant b case.
Epistaxis during a generalized seizure leading to an atypical ictal SPECT finding at the skull base
Wichert-Ana, Lauro;Ferruzzi, Emerson Henklain;Alexandre Jr, Veriano;Velasco, Tonicarlo Rodrigues;Bianchin, Marino Muxfeldt;Terra-Bustamante, Vera Cristina;Kato, Mery;Santos, Antonio Carlos;Azevedo-Marques, Paulo Mazzoncini de;Oliveira, Lucas Ferrari de;Sakamoto, Américo Ceiki;
Journal of Epilepsy and Clinical Neurophysiology , 2006, DOI: 10.1590/S1676-26492006000700007
Abstract: introduction: generalized tonic-clonic seizures (gtcs) are among the most dramatic types of epileptic seizures and may be accompanied by rising blood pressure and pulse rate, physical injuries from falling, muscular convulsions, tongue biting, or aspiration pneumonia. epistaxis is an uncommon complication of generalized seizures and investigations should exclude local or systemic disorders. objective: we aim to report a 29-year-old male patient with medically intractable right temporal lobe epilepsy whose ictal spect showed a conspicuous high extracerebral accumulation of the tracer at the skull base. methods: the tracer 99mtc-ecd was injected during a gtcs complicated by simultaneous epistaxis during a long term video-electroencephalographic monitoring. results: initially, spect images showed an unexpected hot spot at the skull base suggesting pharyngeal or pituitary tumors. clinical history disclosed chronic sinusitis and rare episodes of epistaxis. white and red cells blood count, platelet count, serum biochemistry, coagulation tests, and rest arterial blood pressure were normal. computed tomography and mri excluded sinusoidal expansive or vascular lesions, head trauma, fractures or acute infections. subtracted spect disclosed a focal high concentration of the radiotracer within the left sphenoid sinus, probably related to the nose bleeding. conclusion: this is a singular case of a brain spect artifact secondary to a nasal bleeding during a generalized seizure that was misinterpreted as neoplastic disease. also, this case raises concerns about the pathophysiological relationship among epileptic seizures, nasal bleedings and chronic sinusitis.
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