Cristiano Guedes Bezerra

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RESULTS For deferred lesions, the risk of MACE had significant inverse relationship with FFR (adjusted hazard ratio [aHR], 1.06; 95% confidence interval [CI], 1.05 1.08; P<0.001). However, this relationship was not observed in revascularized lesions (aHR, 1.00; 95% CI, 0.99 1.02; P1⁄40.69). For lesions with FFR of 0.76, the risk of MACE was not(More)
Motivated by the existence of helical wrapping patterns in composite nanotube systems, in this work we study the effects of the helical incorporation of carbon atoms in boron nitride nanotubes. We consider the substitutional carbon atoms distributed in stripes forming helical patterns along the nanotube axis. The density of states and energy band gap were(More)
BACKGROUND Geometrical risk factors for CAD have been previously proposed before. To date, however, the effect of those factors is not conclusive, and remains as an open research field. Here, we hypothesize that some of these factors have a genetic component explaining inter-individual variability. OBJECTIVE To detect heritability indicators of the(More)
A theoretical study is made of the magnetization versus applied field curves of ferro-magnetic/nonmagnetic multilayers constructed according to a Fibonacci quasiperi-odic sequence. The ferromagnetic films are assumed to have uniaxial anisotropy and are coupled by both bilinear and biquadratic effective exchange. The effects of quasiperiodicity in the(More)
The two-dimensional ferromagnetic anisotropic Ashkin-Teller model is investigated through a real-space renormalization-group approach. The critical frontier, separating five distinct phases, recover all the known exacts results for the square lattice. The correlation length (ν T) and crossover (φ) critical exponents are also calculated. With the only(More)
A theoretical study of the specific heat C(T) as a function of temperature in Fibonacci magnetic superlattices is presented. We consider quasiperiodic structures composed of ferromagnetic films, each described by the Heisenberg model, with biquadratic and bilinear coupling between them. We have taken the ratios between the biquadratic and bilinear exchange(More)
OBJECTIVE Intravascular ultrasound (IVUS) is a fundamental imaging technique for atherosclerotic plaque assessment, interventionist guidance, and, ultimately, as a tissue characterization tool. The studies acquired by this technique present the spatial description of the vessel during the cardiac cycle. However, the study frames are not properly sorted. As(More)
The goal of this work is to compare coronary hemodynamics as predicted by computational blood flow models derived from two imaging modalities: coronary computed tomography angiography (CCTA) and intravascular ultrasound integrated with angiography (IVUS). Criteria to define boundary conditions are proposed to overcome the dissimilar anatomical definition(More)
BACKGROUND The use of aortic counterpulsation therapy in advanced heart failure is controversial. OBJECTIVES To evaluate the hemodynamic and metabolic effects of intra-aortic balloon pump (IABP) and its impact on 30-day mortality in patients with heart failure. METHODS Historical prospective, unicentric study to evaluate all patients treated with IABP(More)