Rate of cardiac tamponade and/or pericardiocentesis following atrial fibrillation ablation This measure is reported as four rates stratified by age and gender:

• Reporting Age Criteria 1: Females 18-64years of age
• Reporting Age Criteria 2: Males 18-64 years of age
• Reporting Age Criteria 3: Females 65 years of age and older
• Reporting Age Criteria 4: Males 65 years of age and older