RT Journal Article T1 Syncope and bifascicular block in the absence of structural heart disease. A1 Rivera-López, Ricardo A1 Cabrera-Ramos, Mercedes A1 Jordán-Martinez, Laura A1 Jimenez-Jaimez, Juan A1 Macias-Ruiz, Rosa A1 Aguilar-Alonso, Eduardo A1 Rivera-Fernandez, Ricardo A1 Sanchez-Cantalejo, Emilio A1 Tercedor, Luis A1 Alvarez, Miguel AB The treatment of patients with bifascicular block (BFB) and syncope in the absence of structural heart disease (SHD) is not well defined. The objective of our study is to compare pacemaker empirical implantation with the use of electrophysiological studies (EPS). This is a prospective cohort study that included 77 patients with unexplained cardiogenic syncope and BFB without structural heart disease between 1997 and 2012. Two groups: 36 patients received empirical pacemakers (Group A) and 41 underwent EPS (Group B) to guide their treatment. The incidence of syncope recurrence and atrioventricular block was lower in group A. Mortality and complication rates were similar between both groups. Multivariate analysis demonstrated a higher number of events (combined endpoint) in group B. Our study shows that treatment according to EPS does not improve the results of a treatment strategy based on empirical pacemaker. YR 2020 FD 2020-05-18 LK http://hdl.handle.net/10668/15589 UL http://hdl.handle.net/10668/15589 LA en DS RISalud RD Apr 8, 2025