Jiří Weichet

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BACKGROUND A potential complication during ablation of atrial fibrillation (AF) is damage to adjacent structures such as the esophagus and aorta. Fatal atrio-esophageal fistulas have developed after surgery- or catheter-based AF ablation procedures. OBJECTIVES The purpose of this study was to analyze multidetector computed tomography (MDCT) angiographic(More)
OBJECTIVES This study aimed to evaluate the performance of cardiac magnetic resonance (CMR), cardiac biomarkers, and endomyocardial biopsy (EMB) results to predict left ventricular reverse remodeling (LVRR) in individuals with recent-onset dilated cardiomyopathy (DCM). BACKGROUND LVRR is a marker of a favorable prognosis in individuals with recent-onset(More)
INTRODUCTION Preprocedural cardiac imaging (CT/MRI) and intraprocedural electroanatomical mapping (EAM) are commonly used during left atrial (LA) catheter ablation of atrial fibrillation (AF). In the optimal scenario, the imaging datasets would be directly integrated with the EAM system to guide catheter mapping based on the accurate individual cardiac(More)
AIMS Laserballoon-based pulmonary vein isolation (PVI) for the treatment of atrial fibrillation (AF) has proven safe and effective. Silent brain lesions after AF ablation detected on magnetic resonance imaging (MRI) have been described for several technologies, but its incidence following laserballoon PVI is unknown. The current study sought to assess the(More)
We evaluated the clinical utility of cardiac magnetic resonance imaging (CMR) combined with a novel high-sensitivity troponin T assay (hs-cTnT) in the diagnosis of inflammatory cardiomyopathy. CMR, measurement of hs-cTnT, and endomyocardial biopsy were performed in 42 patients with dilated cardiomyopathy and a short-term history of heart failure (median 2(More)
We evaluated the correlation between pulmonary venous (PV) anatomy and acute and long-term success of PV isolation (PVI) with two balloon-based ablation catheter techniques. One hundred consecutive patients were analyzed in two equal groups treated with either the second-generation cryoballoon (CRYO) catheter or the visually guided laser ablation (VGLA)(More)
BACKGROUND A robotic catheter navigation system has been developed that provides a significant degree of freedom of catheter movement. This study examines the feasibility of synchronizing this robotic navigation system with electroanatomic mapping and 3-dimensional computed tomography imaging to perform view-synchronized left atrial (LA) ablation. METHODS(More)
BACKGROUND Left atrial (LA) fibrosis begets atrial fibrillation (AF). Cardiovascular magnetic resonance (CMR) using the late gadolinium enhancement (LGE) technique might visualize the LA fibrosis and thus help to choose an appropriate strategy for treatment of AF. In this regard, we investigated whether the extent of preablation LA LGE would predict AF(More)