OCT-guided left-main PCI, a retrospective single-center analysis

Abstract

Abstract Funding Acknowledgements Type of funding sources: None. Background It is known that PCI is associated with non-optimal stent implantation utilizing angiography for only left main lesions as well as for bifurcation lesions and is characterised by a high risk of adverse long-term effects. The use of OCT for the left main stent makes it easier to enhance the effective implantation of stents and enhance the results of patients. Methods A single-center randomised study was performed to demonstrate the benefit of stent implantation under OCT control in the left main bifurcation lesions compared to standard implantation under angiographic control. The follow-up period was 1 year, and the study included 68 patients with 1:1 randomization. The final composite points were: cardiac death, ischaemia, or myocardial infarction. All patients were elective, with moderate to high-functional class of angina pectoris. PCI was done using one or two stents, using OCT or without OCT to perform kissing dilation and proximal optimization technique. Results As a result of the data review of 68 patients with or without OCT using PCI of left main bifurcation lesions, the primary endpoint parameters in the non-OCT group were 17.8% and 6% for the OCT group. In 43.1 % of cases, a single-stent technique was used rather than a two-stent when using OCT. In the OCT group, additional stent optimisation is 40% more common. In 96.7 % of cases, a 9-month follow-up in the OCT group showed complete or partial endothelization of the stent struts, allowing earlier termination of DAPT, which is critical in patients at high risk for significant bleeding. Conclusions The perioperative results of PCI for left main bifurcation can be improved by the use of OCT using regulated factors for optimal stent implantation. As a result, in patients with atrial fibrillation and a high risk of painful bleeding, the long-term effects of treatment are increased , the time to take DAPT is decreased and the number of implantable stents is decreased, which is significant.