The First Brazilian Cardiovascular Registry of Atrial Fibrillation: Primary Results of the RECALL Study.

Background: It is estimated that atrial fibrillation (AF) affects approximately 1.5 million people in Brazil; however, epidemiological data are limited. We sought to evaluate the characteristics, treatment patterns, and clinical outcomes in patients with AF in Brazil by creating the first nationwide prospective registry.

Favorable effects of the optimized drug treatment of heart failure on ventricular arrhythmias.

Background: Ventricular arrhythmic events have a strong impact on the mortality of patients with heart failure. The benefits of the optimized drug treatment of heart failure in reducing ventricular arrhythmia have not been well documented yet.

Objective: To analyze the effects of the optimized drug treatment of heart failure on ventricular arrhythmia.