Summary Introduction Modification of internal thoracic artery flow occurs after its anastomosis in the left anterior descending coronary artery. Objective To evaluate the effect of ligation of the proximal branches of anastomosed internal thoracic artery flow on the left anterior descending in relation to velocities and coronary flow velocity reserve in patients with left ventricular ejection fraction preserved (> 50%). Methods Prospective study of patients with left ventricular ejection fraction > 50% and revascularized. Group I was composed of 25 […]