Synergistic role of optical coherence tomography and StentBoost in delineating the cause of intraluminal haziness postpercutaneous coronary intervention

After successful wire passage and pre dilatation, two long overlapping drug-eluting stents (3×32 and 3.5×38 mm; Promus Premier, Boston Scientific, Natick, Massachusetts, USA) were placed from distal to proximal RCA. Optical coherence tomography (OCT) (DragonFly Optis imaging catheter, St. Jude Medical, MA, USA) has previously been shown to guide the physician in decision making and have a positive impact during PCI.1 OCT was performed in the index case and revealed (figure 1C–F) a thrombus and plaque protrusion at the site and a signal drop-off was seen such that the underlying stent struts could not be visualised (figures 1D and 2A; video 2. There was no evidence of dissection. Since a thrombus can obscure the underlying stent due to attenuation,2 3 the possibility of underlying stent fracture could not be ruled out.