1. 55 Use of the index beat method to improve the echocardiographic assessment of cardiac function in patients with atrial fibrillation. (17th July 2020) Authors: Bunting, Karina; Gill, Simrat; Sitch, Alice; Mehta, Samir; O'Connor, Kieran; Hodosn, James; Stanbury, Mary; Lip, Gregory; Kirchhof, Paulus; Griffith, Michael; Townend, Jonathon N; Steeds, Richard P; Kotecha, Dipak Journal: Heart Issue: Volume 106(2020)Supplement 2 Page Start: A43 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗