Average left ventricular ejection fraction (LVEF) values during the 1 year of observation in patients with preserved systolic function (LVEF >40%) and with impaired systolic function (LVEF ≤40%) treated with zofenopril (continuous line) and ramipril (dotted... Average left ventricular ejection fraction (LVEF) values during the 1 year of observation in patients with preserved systolic function (LVEF >40%) and with impaired systolic function (LVEF ≤40%) treated with zofenopril (continuous line) and ramipril (dotted line). Claudio Borghi et al. Open Heart 2015;2:e000195 ©2015 by British Cardiovascular Society