Abstract Background: Balloon post-dilatation (BPD) is often needed for optimizing transcatheter heart valve (THV) implantation, since paravalvular leak (PVL) after transcatheter aortic valve implantation is associated with poor outcome and mortality. Quantitative assessment of PVL severity before and after BPD is mandatory to properly assess PVL, thus improving implantation results and outcomes. Objective: To i...
Background: The diagnostic accuracy of 64-slice MDCT in comparison with IVUS has been poorly described and is mainly restricted to reports analyzing segments with documented atherosclerotic plaques. Objectives: We compared 64-slice multidetector computed tomography (MDCT) with gray scale intravascular ultrasound (IVUS) for the evaluation of coronary lumen dimensions in the context of a comprehensive analysis, i...
Background:Vascular remodeling, the dynamic dimensional change in face of stress, can assume different directions as well as magnitudes in atherosclerotic disease. Classical measurements rely on reference to segments at a distance, risking inappropriate comparison between dislike vessel portions.Objective:to explore a new method for quantifying vessel remodeling, based on the comparison between a given target s...
Background:Advantages and disadvantages of ad hoc percutaneous coronary intervention have been described. However little is known about the radiation exposure of that procedure as compared with the staged intervention.Objective:To compare the radiation dose of the ad hoc percutaneous coronary intervention with that of the staged procedureMethods:The dose-area product and total Kerma were measured, and the doses...
Background: The investigation of stable coronary artery disease (CAD) and its treatment depend on risk stratification for decision-making on the need for cardiac catheterization and revascularization. Objective: To analyze the procedures used in the diagnosis and invasive treatment of patients with CAD, at the Brazilian Unified Health System (SUS) in the cities of Curitiba, São Paulo and at InCor-FMUSP. Methods...
Introdução: Polímeros biodegradáveis foram desenvolvidos para reduzir a reação de hipersensibilidade associada aos polímeros duráveis dos stents farmacológicos de primeira geração, mantendo sua eficácia antiproliferativa e aumentado sua segurança. Avaliamos os resultados angiográficos de 9 meses e os resultados clínicos de longo prazo dos stents farmacológicos com polímeros biodegradáveis em pacientes com alto ...
As células-tronco são células indiferenciadas, capazes de se autorrenovar e de se diferenciarem em diversos tipos celulares, além de apresentarem propriedades imunomoduladoras e efeitos parácrinos mediante injúria tecidual, podendo, dessa forma, tratar lesões e doenças ou ainda substituir células danificadas ou perdidas. Dentre as fontes de células-tronco adultas, o tecido adiposo é uma fonte atrativa, pois o o...
INTRODUÇÃO: O implante transcateter de prótese valvular aórtica (ITVA) tem sido utilizado em nosso meio e em diversos países do mundo como alternativa ao tratamento conservador em pacientes com estenose aórtica grave e elevado risco cirúrgico. Objetivou-se descrever o perfil clínico basal e a mortalidade a curto e médio prazos de uma série consecutiva de casos tratados com ITVA em dois centros localizados, resp...