Double-Kissing Nano-Crush for Bifurcation PCI Guided by Live OCT Imaging: Shedding Light on Stent Positioning.

Percutaneous coronary intervention (PCI) of bifurcation lesions poses unique challenges and carries a high risk of adverse events on follow-up, mainly driven by repeat revascularization and stent thrombosis. Several techniques exist to tackle bifurcation lesions. Among those, double kissing (DK) crush has emerged in recent years as a safe and effective approach for complex bifurcations requiring a two-stent strategy. In its most recent iteration, the DK nano-crush, minimal (ideally less than 3 mm) side branch stent protrusion into the main branch is recommended, to reduce the number of layers of stent struts at the ostium. Angiographic guidance of stent placement may not allow to achieve optimal positioning. Here we describe a novel approach to DK nano-crush, which employs simultaneous optical coherence tomography to facilitate optimal stent implantation at the side branch ostium.