Fig. 2.
Primary PCI procedure with subsequentmeasurement of the IMR. a Angiographic demonstration of the presence of a subtotal occlusion of the right coronary artery (RCA) in its mid portion and b final result after successful reopening of the RCA with subsequent implantation of two DES stents; c measurement of the IMR. The recording is obtained from a pressure wire in the mid of the right coronary artery of a patient after primary PCI. The panel is divided into two windows; the upper window displays the pressure segments recorded during each saline injection, separated from each other by white vertical lines (mean proximal arterial pressure (Pa) = 91 and mean distal arterial pressure (Pd) = 81 result into a fractional flow reserve (FFR) = 0.89). The lower graph displays saline injections at baseline (blue) and during hyperemia (yellow). Between the two graphs are mean transit time values at baseline (preceded by “Bas”), and during hyperemia (preceded by “Hyp”)