Primary end points are major hemorrhagic and thrombotic/thromboembolic complications including cardiac death and secondary endpoints are Major adverse cardiac events (i.e., need for urgent re-revascularization, myocardial infarction, death), stent thrombosis and major/non major hemorrhagic complications. Clinical follow-up will be completed for all patients via telephone, or clinic visits scheduled at 1, 3, 6, and 12 months after PCI-S. The 1 and 6 months visits are optional. The patients will be asked about their clinical outcomes, hospitalizations and medications. Any additional information needed, such as specific mortality, will be obtained by contacting one of the patient's physicians or other health care professional or from death certificates. CRFs will be completed and faxed without delays after discharge, and after each follow up visit. Recruitment will take approximately 12 months. Follow-up will be 12 months for each patient.