CHA2DS2-VASc score as a predictor of no-reflow phenomenon after saphenous vein graft percutaneous coronary intervention in patients with non-ST-segment elevation acute coronary syndromes

Percutaneous coronary intervention (PCI) of saphenous vein grafts (SVGs) is associated with an increased risk of complications, particularly no‑reflow phenomenon and distal embolization due to low patency rates. The CHA2DS2‑VASc score is a clinical risk stratification tool used to predict thromboembolism events especially in patients with nonvalvular atrial fibrillation. The aim of this study was to investigate the relationship between the CHA2DS2‑VASc score and no‑reflow phenomenon after SVG PCI in patients with non-ST‑segment elevation acute coronary syndromes (NSTE‑ACS). In this study, we included 268 patients diagnosed with NSTE‑ACS who underwent PCI for SVG disease in our tertiary cardiovascular center. Patients were divided into 2 groups: group 1 without no‑‑reflow phenomenon (n = 190) and group 2 with no‑reflow phenomenon (n = 78) following the intervention, and then compared based on CHA2DS2‑VASc scores. The CHA2DS2‑VASc score (P