Figure 2.
Coronary Pressure and Flow Velocity Thermodilution Measurements
Measurements on (A) day 4 (sepsis phase) and (B) day 30 (recovery phase, before percutaneous coronary intervention [pre-PCI]). Measurements of resting and hyperemic flow along with computed resistance indices: fractional flow reserve (FFR), coronary flow reserve (CFR), index of microcirculatory resistance (IMR), corrected index of microcirculatory resistance (IMRcorr), baseline resistance index (BRI), resting flow velocity (RFV), hyperemic flow velocity (HFV), and microvascular resistance reserve (MRR). Pa = aortic pressure; Pd = distal coronary pressure; RRR = resistive reserve ratio.