PMC8086657_01
Coronary angiography and optical coherence tomography (OCT) findings after scaffold implantation. A. Right coronary artery (RCA): A-1.1. A severe lesion of distal RCA (red arrow); A-1.2. Result after scaffold implantation; A-1.3. Under-expanded Absorb by OCT. A-2.1. A severe in-bioresorbable scaffold implantation (BVS) restenosis in distal RCA (red arrow); A-2.2, A-2.3. OCT findings before and after restenosis treatment with drug-eluting stent implantation. A-3.1, A-3.2, A-3.3. Angiography and OCT findings at 5-year follow-up. B. Left anterior descending (LAD): B-1.1. Severe lesion of mid LAD (red arrow); B-1.2. Result after scaffold implantation; B-1.3. Normal position of scaffold by OCT. B-2.1, B-2.2, B-2.3. Normal coronary angiography without BVS restenosis in 2013. B-3.1, B-3.2, B-3.3. Angiography and OCT findings at 5-year follow-up.
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The final result was evaluated with optical coherence tomography (OCT), which showed a short segment of mild underexpansion in RCA (minimal scaffold area after post dilation 4.01 mm2) and an optimal result in LAD (Fig. 1, Panels A-1.1, A-1.2, A-1.3). AngioSculpt balloon (AngioScore, CA, USA); then, a 2.5 x 28 mm everolimuseluting stent (Xience, Abbott Laboratories, Abbott Park, IL, USA) was implanted. An OCT analysis was performed before and after drug-eluting stent (DES) implantation and showed that restenosis was located at the zone of the initial under-expansion (Fig. 1, Panels A-2.1, A-2.2, A-2.3). OCT image (Fig. 1, Panels B-3.1, B-3.2, B-3.3). On the other hand, this pattern was not seen in RCA because of the previously implanted DES. In this case, and thanks to BVS bioresorption, RCA looked like a common stented artery evaluated by OCT after metallic stent endothelization (Fig. 1, Panels A-3.1, A-3.2, A-3.3).