Participants and Randomization
PERIPHERAL VASCULAR DISEASE
The patients who underwent open-chest CABG, with at least one SVG, were candidates for study. The patients with the inclusion criteria were identified and assessed for eligibility. Concomitant cardiac procedures, urgent procedures, REDO procedures, significant peripheral vascular disease, and patients planned for multiple arterial revascularizations were excluded from the study. Methods I in the data supplement describes additional explanations of the inclusion and exclusion criteria.Preoperative saphenous vein mapping on both legs was performed in all patients. Ultrasound examination analyzed vein diameter, varies existence, vein coursing and the position of perforators. The mapping protocol is completely presented in Methods II in the data supplement.Patients eligible for the study, who gave informed consent on the procedure day, were randomized into three groups. The simple randomization was achieved using computer-generated random numbers.