Associations between presence of tachycardia at time of admission (heart rate ≥120/min) and the primary composite outcome of death or cardiovascular rehospitalisation, in those with reduced (left panel) and preserved (right panel) LVEF. HR: Cox HR. LVEF, le... Associations between presence of tachycardia at time of admission (heart rate ≥120/min) and the primary composite outcome of death or cardiovascular rehospitalisation, in those with reduced (left panel) and preserved (right panel) LVEF. HR: Cox HR. LVEF, left ventricular ejection fraction. Robert J H Miller et al. Open Heart 2016;3:e000520 ©2016 by British Cardiovascular Society