Clinical outcomes of left main percutaneous coronary intervention in elderly patients at a long-term follow-up

Abstract

Abstract Funding Acknowledgements Type of funding sources: None. Introduction The progressive aging of the population leads to higher prevalence of ischemic heart disease with an increased left main coronary artery (LMCA) disease. Elderly patients (>75 years) represent an unfavorable subgroup because of their fragility, the frequent presence of multiple comorbidities associated and their especially high rate of surgical risk. Purpose The main objective of this study was to evaluate the efficacy and safety of percutaneous coronary interventions (PCI) in LMCA disease at 14 years follow-up in the elderly. Methods We prospectively included 217 consecutive patients (80.3 ± 2.4 years, 68.7% male) with LMCA disease treated with PCI between June 2006 and June 2020. We evaluated the occurrence of major adverse cardiovascular events (MACE) defined as cardiac death, non-fatal myocardial infarction, target lesion revascularization (TLR) and stent thrombosis after 14 years clinical follow-up (median 56 months). Results 48.4% of patients had stable coronary disease and 51.6% acute coronary syndrome (42.4% Non-STEMI and 9.2% STEMI). 43.3% were diabetic patients and 45.9% presented moderate-severe left ventricular systolic dysfunction. Mean logistic EuroSCORE was 10.4% and 47.5% of lesions with Syntax score ≥ 32. LMCA bifurcation was affected in 78.8% of cases and the most frequently bifurcation technique employed was "provisional stenting" in 64.1% of cases. Second-generation drug eluting stent was used in 97.6% of cases. The intraprocedural complication rate was 4.5% with one death. During follow-up, MACE rate at 14 years was 19.9% (14.7% cardiac death, 3.2% non-fatal myocardial infarction, 4.1% TLR and thrombosis rate 0.5%). There were significant differences in the occurrence of MACE in patients with moderate-severe ventricular systolic dysfunction (p=0.01 OR 3.92; IC 95% de 1.26-8.57). Conclusions Left main PCI in elderly patients with high surgical risk provide very favourable results with a low rate of immediate complications in the procedure and a low rate of cardiac adverse events at a very long-term follow-up. However, patients with ventricular dysfunction have poor prognosis.