Elevated Left Atrial Volume Index Predicts Incident Atrial Fibrillation After Typical Right Atrial Flutter Ablation.

Purpose: Incident atrial fibrillation (AF) is common after cavotricuspid isthmus (CTI) dependent atrial flutter (AFL) ablation. Risk factors for the development of AF post ablation are not well understood. The purpose of this study was to identify patients undergoing CTI ablation for AFL most likely to develop AF.

Outcomes in patients with various forms of aortic stenosis including those with low-flow low-gradient normal and low ejection fraction.

Low-flow low-gradient aortic stenosis with normal ejection fraction (LFLGNEF AS) is a newly characterized poorly understood entity within the AS spectrum. Whether LFLGNEF AS has a worse prognosis than typical AS remains controversial. We retrospectively identified 4,546 individual patients with any type of AS on echocardiogram from 2003 through 2013 and categorized them into 5 cohorts: (1) mild AS, (2) moderate AS, (3) severe AS, (4) LFLGNEF AS (ejection fraction≥55%), and (5) low-flow low-gradient low ejection fraction AS (LFLGLEF AS; ejection fraction<55%).