Echocardiographic Structure and Function in Elderly Patients With Atrial Fibrillation in Japan - The ANAFIE Echocardiographic Substudy.

Background: Echocardiographic data on the cardiac structure and function in elderly patients with atrial fibrillation (AF) and heart failure (HF) are limited. This subcohort study of the ANAFIE Registry analyzed echocardiographic parameters to identify cardiac structural and functional characteristics.

Methods and results: Of 32,726 subjects in the ANAFIE population, 1,494 (4.