Register of Treatment of Unprotected Left Main Coronary Artery Stenosis in Andalucía

Measure the MACE survival in the coronary-artery bypass grafting (CABG) group and in the coronary stent procedure (CSP) group, to identify the differences between both groups in the short and medium-term follow up

MACE= Major Adverse Cardiac Event (e.g., acute myocardial infarction, ischaemic stroke, coronary arterial occlusion, death)

Time frame: 12 months