Long-term follow-up of older patients with Mobitz type I second degree atrioventricular block.

Objective: To examine the long-term survival of older patients with Mobitz I second degree atrioventricular (AV) block.

Design: Retrospective cohort study. Propensity score adjustment for requiring a cardiac implantable electronic device (CIED) was performed.

Imaging in catheter ablation for atrial fibrillation: enhancing the clinician's view.

Catheter ablation is an effective treatment for symptomatic atrial fibrillation. A thorough understanding of the left atrium anatomy and its adjacent structures is critical for the success of the procedure and for avoiding complications. Pre-procedural imaging aims at determining left atrial size, anatomy, and function and is also used to rule out an atrial thrombus.