Supplementary Material for: Outcomes of patients undergoing PCI of ostial coronary lesions- A single center study

Introduction Ostial coronary lesions are a subset of proximal coronary lesions which are relatively more difficult to treat and were associated with worse clinical outcomes in the early percutaneous coronary intervention (PCI) era. Data regarding the outcomes of ostial lesions' PCI in the contemporary era is lacking. Methods We conducted a single center, all-comer, prospective registry study, enrolling patients undergoing PCI with the use of contemporary drug eluting stents (DES) between July 2016 and February 2018. Included in the present analysis were only patients treated for proximal lesions. Clinical outcomes were compared between patients undergoing PCI of ostial versus proximal non-ostial lesions. The primary endpoint was target vessel revascularization (TVR). Secondary endpoints included Target lesion revascularization (TLR) and major cardiovascular adverse events (MACE) at 12 months. Results A total of 334 (84.7% male, 67.3±10.7 years) patients were included, of which 91 patients were treated for ostial lesions and 243 were treated for proximal non-ostial lesions. Baseline and procedural characteristics were similar between the two groups. At 12 months TVR and TLR were numerically higher among patients undergoing PCI of ostial versus non-ostial lesions without reaching statistical significance (5.5% vs. 3.3%; p=0.35 and 4.4% vs. 2.5%; p=0.47 respectively). The rate of MACE was similar between the two groups. Conclusion In patients undergoing PCI with the use of contemporary DES, clinical outcomes were similar among patients treated for ostial compared to proximal non-ostial lesions. Larger studies are required to further evaluate the performance of contemporary DES in this subset of lesions.