Fig. 1

The pressure field visualization. Each dot represents a specific SV, Es, and a resulting MAVP gradient which is indicated by curved lines. Color is used to designate clinically significant events, interventions, or time intervals. In this example of coronary artery graft surgery, red dots indicate the pre-induction period, yellow dots indicate the pre-bypass period and blue dots represent the post-bypass period. The curved blue line indicates an arterio-venous pressure difference of 60 mmHg