Atrial fibrillation is a chronic, progressive disorder, and persistent forms of atrial fibrillation are associated with increased risks of thromboembolism and heart failure. Catheter ablation as ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...

A 63-year-old African-American woman arrived at the emergency department with a 24-hour history of severe, nonexertional, substernal chest pain that radiated down her left arm. Associated symptoms ...

Current guidelines recommend pulmonary-vein isolation by means of catheter ablation as treatment for drug-refractory paroxysmal atrial fibrillation. Radiofrequency ablation is the most common method, ...

A 63-year-old African-American woman with a 24-hour history of severe, nonexertional chest pain and new-onset paroxysmal atrial flutter without ST-segment elevation was treated with enoxaparin and ...