15 documents found, page 1 of 2
Preprocedural imaging guiding ventricular tachycardia ablation in structural he...
Ferreira, Afonso Nunes; Brito, Joana; Cortez-Dias, Nuno; Lima da Silva, Gustavo; Pinto, Fausto J.; De Sousa, JoãoBackground: Integration of preprocedural imaging techniques in ventricular tachycardia (VT) ablation may improve the identification of arrhythmogenic substrates, particularly relevant for patients with nonischemic cardiomyopathy (NICM) with sub-optimal outcomes. We assessed the impact of advanced preprocedural imaging on the safety and long-term efficacy of radiofrequency catheter ablation (RCA) for VT, compari...
PrOgnosis in Pulmonary Embolism (PoPE): 30-Day mortality risk score based on fi...
Gerardo, Filipa; Faria, Daniel; Silvério António, Pedro; Baltazar Ferreira, João; Beringuilho, Marco; Ferreira, Hilaryano; Fialho, Inês; Miranda, InêsIntroduction and objective: Several scoring systems have been developed for risk stratification in patients with acute pulmonary embolism (PE). The Pulmonary Embolism Severity Index (PESI) and its simplified version (sPESI) are among the most used, however the high number of variables hinder its application. Our aim was to derive an easy-to-perform score based on simple parameters obtained at admission to predi...
Does a left common pulmonary trunk anatomy represent a real limitation for atri...
Brito, Joana; Rodrigues, Tiago; António, Pedro Silvério; Ferreira, Afonso Nunes; Lima Da Silva, Gustavo; Bernardes, Ana; Barreiros, Céu; Ribeiro, JoãoCryoballoon ablation (CBA) has been increasingly used for atrial fbrillation (AF) ablation. The presence of pulmonary vein (PV) anatomical variants, particularly left common pulmonary trunk (LCPT), may limit the cryoballoon adaptability and performance. To evaluate the impact of the presence of LCPT in CBA, we compared the success, safety, and procedure characteristics in consecutive patients referred for a frs...
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...
Association between the number of altered late potential criteria and increased...
Brito, Joana; Cortez-Dias, Nuno; Lima Da Silva, Gustavo; Ferreira, Afonso Nunes; Aguiar-Ricardo, Inês; Cunha, Nelson; António, Pedro SilvérioBackground: Brugada syndrome (BrS) is associated with abnormal electrophysiological properties at right ventricular epicardium, consisting of fragmented electrograms extending well beyond QRS termination. We aimed to evaluate the utility of signal-averaged electrocardiogram (SA-ECG) for the noninvasive assessment of late potentials (LP) and risk stratification of BrS patients. Methods: A prospective, observatio...
Effectiveness and safety of sacubitril/valsartan in patients with chronic kidne...
Couto Pereira, Sara Cristina; Rodrigues, Tiago; Ferreira, Afonso Nunes; Agostinho, João R.; Pinto, Fausto J.; Brito, DulceBackground: data regarding the effectiveness and safety of sacubitril/valsartan in heart failure and reduced ejection fraction (HFrEF) patients with chronic kidney disease (CKD) are scarse. Objective: to evaluate the effectiveness and safety of sacubitril/valsartan in HFrEF and CKD in a real-world population. Methods: we included consecutive ambulatory HFrEF patients that initiated sacubitril/valsartan between ...
New technique for preserving cephalic vein flow in pacemaker implantation ipsil...
Carrington, Mafalda; António, Pedro Silvério; Rodrigues, Natacha; Ferreira, Afonso Nunes; Bernardes, Ana; Pinto, Fausto J.; De Sousa, JoãoVascular patrimony is a major concern in patients with end-stage renal disease. As patients on chronic hemodialysis programs experience increasing survival rates, they frequently face multiple vascular access failures and may need recurrent central venous catheter insertions and fistula/grafts reinterventions to optimize their arteriovenous accesses. In addition, heart failure and heart rhythm disorders are fre...
Impact of different activation wavefronts on ischemic myocardial scar electroph...
Lima Da Silva, Gustavo; Cortez-Dias, Nuno; Ferreira, Afonso Nunes; Nakar, Elad; Francisco, Raquel; Pereira, Mariana; Moreno, Javier; Martins, Raphaël P.Introduction: Scar-related ventricular tachycardia (VT) usually results from an underlying reentrant circuit facilitated by anatomical and functional barriers. The later are sensitive to the direction of ventricular activation wavefronts. We aim to evaluate the impact of different ventricular activation wavefronts on the functional electrophysiological properties of myocardial tissue. Methods: Patients with isc...
Novel “late potential map” algorithm: abnormal potentials and scar channels det...
Cortez-Dias, Nuno; Lima Da Silva, Gustavo; Ferreira, Afonso Nunes; Nakar, Elad; Francisco, Raquel; Pereira, Mariana; Carpinteiro, Luís; Pinto, Fausto J.Background: Automated systems for substrate mapping in the context of ventricular tachycardia (VT) ablation may annotate far-field rather than near-field signals, rendering the resulting maps hard to interpret. Additionally, quantitative assessment of local conduction velocity (LCV) remains an unmet need in clinical practice. We evaluate whether a new late potential map (LPM) algorithm can provide an automatic ...
Mitral valve prolapse: American versus European guidelines : which one is better
Brito, J.; Rigueira, Joana; Rodrigues, Tiago; Aguiar-Ricardo, Inês; Santos, R.; Ferreira, Afonso Nunes; Cunha, Nelson; Pereira, S.; António, P. S.According to the most recent recommendations of AHA, mitral valve prolapse (MVP) is defined as systolic displacement of the mitral leaflet into the left atrium (LA) of at least 2 mm from the mitral annular plane. The ESC recommendations define MVP, flail and billowing, according to the location of the leaflet tips in relation to the coaptation plan. Differences in outcomes considering these classifications are ...