BACKGROUND: Catheter ablation for atrial fibrillation (AF) is one of the most common cardiovascular procedures being performed worldwide. Despite the large body of evidence of its effectiveness, with ...

BACKGROUND: Heart failure with reduced ejection fraction (HFrEF) is characterized by impaired contractility and high ...

Cardiac intensive care units are specialized, high-acuity, and resource-intensive environments for the care of critically ill ...

Resources for observational comparative research have expanded enormously in recent years to include very large sources of ...