Relationship between silent atrial fibrillation and the maximum heart rate in the 24-hour Holter: cross-sectional study.

Context And Objective: Occurrences of asymptomatic atrial fibrillation (AF) are common. It is important to identify AF because it increases morbidity and mortality. 24-hour Holter has been used to detect paroxysmal AF (PAF).

Predictors of permanent pacemaker requirement after transcatheter aortic valve implantation: insights from a Brazilian registry.

Background: The aim of this study is to evaluate the predictors of permanent pacemaker (PPM) implantation after TAVI.

Methods: Between January 2008 and February 2012, 418 patients with severe aortic stenosis underwent TAVI and were enrolled in a Brazilian multicenter registry. After excluding patients who died during the procedure and those with a previous PPM, 353 patients were included in the analysis.

Risk of ionizing radiation in women of childbearing age undergoing radiofrequency ablation.

Background: The International Commission of Radiology recommends a pregnancy screening test to all female patients of childbearing age who will undergo a radiological study. Radiation is known to be teratogenic and its effect is cumulative. The teratogenic potential starts at doses close to those used during these procedures.

Catheter ablation of arrhythmias exclusively using electroanatomic mapping: a series of cases.

Background: Catheter ablation is a treatment that can cure various cardiac arrhythmias. Fluoroscopy is used to locate and direct catheters to areas that cause arrhythmias. However, fluoroscopy has several risks.