7 documents found, page 1 of 1
Ostial vs. wide area circumferential ablation guided by the Ablation Index in p...
Sousa, Pedro A.; Barra, Sérgio; Saleiro, Carolina; Khoueiry, Ziad; Adão, Luís; Primo, João; Lagrange, Philippe; Lebreiro, Ana; Fonseca, PauloPulmonary vein isolation (PVI) guided by the Ablation Index (AI) has shown high acute and mid-term efficacy in the treatment of paroxysmal atrial fibrillation (AF). Previous data before the AI-era had suggested that wide-area circumferential ablation (WACA) was preferable to ostial ablation. However, with the use of AI, we hypothesize that ostial circumferential ablation is non-inferior to WACA and can improve ...
Multielectrode mapping for premature ventricular contraction ablation: a prospe...
Sousa, Pedro A.; Barra, Sérgio; Cortez-Dias, Nuno; Khoueiry, Ziad; Paulo, José; António, Natália; Ferreira, Afonso Nunes; Pereira, MarianaPurpose: We aim to evaluate whether the use of a multielectrode mapping catheter could lead to higher efficacy of premature ventricular contraction (PVC) ablation. Methods: Prospective, multicenter nonrandomized study of consecutive patients referred for PVC ablation from January 2018 to June 2021. Patients were separated into two groups: activation map performed with the PentaRay catheter (Study group) or with...
Two years after pulmonary vein isolation guided by ablation index—a multicenter...
Sousa, Pedro A.; Puga, Luís; Adão, Luís; Primo, João; Khoueiry, Ziad; Lebreiro, Ana; Fonseca, Paulo; Lagrange, Philippe; Elvas, Luís; Gonçalves, LinoBackground: The use of the Ablation Index (AI) software for paroxysmal atrial fibril-lation (AF) has been associated with higher acute effectiveness and higher 1-year ar -rhythmia freedom. There is, however, a lack of data concerning longer follow-up. We aim to evaluate the 2-year outcomes after a standardized AI- guided pulmonary vein isolation (PVI).Methods: Prospective, multicenter study of consecutive patie...
Impact of catheter ablation for atrial fibrillation in patients with heart fail...
Ribeiro, Joana Maria; Sousa, Pedro A.; António, Natália; Baptista, Rui; Elvas, Luís; Barra, Sérgio; Gonçalves, LinoIntroduction and Aims: Catheter ablation has been shown to improve left ventricular (LV) ejection fraction (LVEF) in patients with atrial fibrillation (AF) and heart failure (HF). Our aim was to assess the impact of AF ablation on the outcome of patients with HF and LV systolic dysfunction. Methods: We performed a retrospective observational cohort study of all patients with HF and LVEF <50% and with no apparen...
Pattern Matching Filter and multielectrode mapping catheter – A new approach fo...
Sousa, Pedro A.; António, Natália; Barra, Sérgio; Elvas, Luís; Gonçalves, LinoPurpose: Our goal was to assess usefulness of Pattern Matching Filter (PMF) software combined with the PentaRay catheter for complex premature ventricular contraction (PVC) ablation. Methods: A prospective observational study of consecutive patients referred for complex PVC ablation at our tertiary center from January to September 2018. Patients underwent ablation using a pre-specified mapping strategy with the...
Constrictive pericarditis following atrial fibrillation ablation - A rare compl...
Marques-Alves, Patricia; Sousa, Pedro A.; António, Natália; Barra, Sérgio; Elvas, Luís; Gonçalves, Lino
Interactive Exercises on Analysis Methods for DC Linear Electrical Circuits
Sousa, Pedro A.; Gericota, Manuel G.; Alves, Gustavo R.Electrical Engineering students must learn the fundamentals of electricity in a very short time, due to the increasing number and size of areas addressed on EE courses. While some students have been exposed to those fundamentals during secondary level education, others have not. These circumstances increase the complexity of devising a good approach to motivate all students for learning. One example occurs when...