BackgroundLate results of PCI in patients aged ≤40 years are few presented without differentiation of groups with acute coronary syndrome (ACS) vs. Stable Angina, and age borderlines≤35 years vs. 36–40 years. Health-life quality following PCI in patients ≤40 years of age not studied.ObjectiveTo analyze predictors of outcomes, and subsequent life-style in patients aged ≤35 vs. 36–40 years underwent PCI according to ACS vs. Stable Angina.MaterialEnrolled 208 consecutive patients with coronary artery disease aged 24–40 years, of them 157 (75.5%) – aged 36–40 years, 51 (24.5%) – ≤35 years. 197 (94.7%) patients underwent revascularization of the myocardium, of them: 165 (79.3%) patients underwent PCI; 32 (15.4%) – CABG. 11 (5.3%) patients abandoned revascularization. Late results of PCI, and subsequent health-life quality studied in 126 (76,4%) of 165 patients on 10–108 months (mean 62,5±2,6).Results84 (50.9%) patients underwent PCI according to ACS; 81 (49.1%) – Stable Angina, without any complications. In-hospital, and 30-days mortality 0%.Actuarial survival on 9 years comprised 99,2%; cardiac mortality – 0,8%; events-free survival on 1–2–3 years comprised 90,5–84,1%-81,7%; on 5–9 years – 79,4%.Active lifestyle verified in 74,6% patients; sparing lifestyle – in 25,4%; return to work – in 86,5% patients. 88,1% examined preserved family; transitory sexual disorders revealed in 28,6% patients. Regular medication, and dietary regimen followed by 83,3% & 27,8% patients. Continue smoking & abuse energetic drinks 34,1% & 23,8% examined; overweight and obesity persisted in 23,8% & 19% examined patients. 23% patients fall in depression tied with re-MI/ angina; 18,3% – with quarantine (COVID-19); 6,3% examined suffered “panic attack” waiting recurrence of angina. Re-MI/angina revealed in 23% patients; 20,6% examined underwent re-PCI.ConclusionPredictors of poor outcomes were: 1) ACS; 2) age in time of PCI ≤35 years; 3) early MI, DM, LVEF ≤35–40%; 4) used stents diameter<28mm.; 5) continued smoking, and abuse of energetic drinks.Leading independent predictor – aggressively current atherosclerosis & DM in individuals ≤40 years of age leading to rapid dysfunction of stents; in patients with patency stents – lesion of native or “protected” coronary arteries.FUNDunding AcknowledgementType of funding sources: None.