Oliveira Santos

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INTRODUCTION Pulmonary angiography by computed tomography (CT) is the method of choice for the detection of acute pulmonary embolism (PE). Studies have shown that the severity of PE can be estimated by clot burden scores. OBJECTIVE To evaluate the correlation between an angiographic clot burden score (Qanadli score - QS) and parameters of right(More)
Noncompaction of the ventricular myocardium (NVM) is a rare congenital disease caused by an arrest in normal myocardial embryogenesis, leading to persistence of numerous prominent trabeculations which communicate with the left ventricle. It was first described as a congenital condition affecting children, but several cases have been reported of late(More)
Plasma is the fourth state of matter, following the three states of solid, liquid and gas. Experience has amply demonstrated that solids exposed to the oxygen-deficient plasma flame are converted to liquid, and liquid exposed to the same flame is converted to gas. A low amount of vitrified solid residue material usually remains at the end of this process.(More)
A 65-year-old woman with a dual-chamber pacemaker implanted in 2006 for symptomatic carotid sinus hypersensitivity was incidentally found to have loss of ventricular capture on routine pacemaker interrogation. A chest X-ray raised the suspicion of perforation and migration of the right ventricular lead, confirmed by three-dimensional echocardiogram and CT(More)
Aortic valve stenosis can be complicated by gastrointestinal bleeding from angiodysplasia. A deficiency of high molecular weight multimers of von Willebrand factor (vWF) (type 2A von Willebrand disease) provides the link between this association, which is known as Heyde syndrome. Aortic valve replacement corrects the vWF abnormalities with long-term(More)
Left-ventricular non-compaction (LVNC) is a rare congenital cardiopathy, which results from the failure of the myocardial compaction process, leading to the persistence of numerous and deep trabeculations communicating with the ventricular cavity. Its main clinical manifestations are heart failure, arrhythmias (supraventricular or ventricular) and episodes(More)
The authors present two cases of purulent pericarditis secondary to pneumococcus pneumonia, a rare entity in the antibiotic era, one of them in an apparently healthy person. A systematized diagnostic approach to moderate pericardial effusion is presented, together with a review of purulent pericarditis. The presence of pericardial effusion with persistent(More)
AIMS Stratifying risk of sudden death is a major issue in the management of hypertrophic cardiomyopathy (HCM). Existing risk factors have low positive predictive value and new parameters are needed. Determination of myocardial deformation (strain) by 2D Speckle tracking is a new methodology for determining LV regional function and could correlate with(More)
Theorem 1 (Fundamental Theorem of Algebra). Every non-constant polynomial with complex coefficients has a root in C. This is the strategy of the proof. Let Xn ' C be the space of degree n monic polynomials with complex coefficients, via the identification (a1, ..., an) 7→ z + ∑n i=1 aiz . Let D ⊂ Xn be the zero locus of the discriminant, and let R ⊂ Xn \ D(More)
Left ventricular noncompaction (LVNC) is a rare congenital disease caused by an arrest in normal myocardial embryogenesis, leading to persistence of numerous prominent trabeculations that communicate with the left ventricle. It was first described as a congenital condition affecting children, but several cases have been reported of late presentation. The(More)