PMC6727233_01
Chronic dissection of the non-ischemic distal left main lesion. I - Cross-sectional optical coherence tomography (OCT) images presenting proximal left main. II - the proximal entry to the dissection. III - the OCT probe within the false lumen (FL) of dissection and presentation of the true visible lumen (TR). IV - the distal entry to the dissection. V - the distal left main; true lumen (TL). A and B the diagnostic angiogram presenting the tandem lesion in the distal left main and distal circumflex artery. The white arrow indicates the observed haziness in the left main. The black arrow indicates the distal lesion. C - FFR assessment after 200 mug of adenosine, D - OCT cross-sectional image of the fibrous lesion in the distal segment of circumflex artery. E - Three-dimensional reconstruction of the observed dissection presenting FFR wire in FL
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The intracoronary administration of adenosine with doses up to 200 mug revealed an FFR value of 0.87 (Figure 1). Both the OCT probe and FFR wire passed through the false lumen (Figure 1).