Analysis of coronary vascular resistance and blood flow of venous graft in coronary artery bypass grafting.

Objective: The aim of this study was to assess the coronary vascular resistance (CVR) and to analyze the flow differences through grafts in coronary artery bypass graft surgery.

Methods: Between 17 June and 15 July 2005, we assessed the coronary vascular resistance profile in 10 patients undergoing coronary artery bypass graft surgery by grafting a section of saphenous vein and checking CVR direct (preoperative) and indirect arterial pressure and blood flow during blood cardioplegic infusion.

Results: Significant differences between segments of coronary grafts with flow changes ranging from 36.