Two-Year Clinical Outcomes In Stable Angina And Acute Coronary Syndrome After Percutaneous Coronary Intervention Of Left Main Coronary Artery Disease (Vol 31, Pg 1084, 2016)

Background/Aims: This study appraised the long term clinical outcomes of patients treated with percutaneous coronary intervention (PCI) for unprotected left main coronary artery (ULMCA) disease. There are limited data regarding longterm clinical outcomes after PCI for ULMCA disease. Methods: From 2001 to 2011, a total of 448 patients who underwent PCI for ULMCA disease and had 2-year clinical follow-up, were analyzed. The study patients were divided into two groups: group I (stable angina pectoris [SAP], n = 60, 48 men, 62 +/- 10 years) and group II (acute coronary syndrome [ACS], n = 388, 291 men, 64 +/- 10 years). We evaluated clinical and angiographic characteristics and major adverse cardiac events (MACE) during 2-year clinical follow-up. Results: Mean age of studied patients was 64 +/- 10 years with 339 male patients. Average stent diameter was 3.6 +/- 0.4 mm and stent length was 19.7 +/- 6.3 mm. Stent implantation techniques and use of intravascular ultrasound guidance were not different between two groups. In-hospital mortality was 0% in group I and 7% in group II (p = 0.035). One-month mortality was 0% in group I and 7.7% in group II (p = 0.968). Two-year survival rate was 93% in the group I and 88.4% in the group II (p = 0.921). Predictive factors for 2-year MACE were hypertension, Killip class >= 3, and use of intra-aortic balloon pump by multivariate analysis. Conclusions: Although in-hospital mortality rate was higher in ACS than in SAP, clinical outcomes during 2-year clinical follow-up were similar between SAP and ACS after PCI of ULMCA.