 Percutaneous coronary intervention PCI has become the most common form of coronary revascularization worldwide. Although PCI is a safe procedure, it may have multiple risks including bleeding, coronary dissection, abrupt vessel closure, and myocardial necrosis. It is estimated that approximately 25 of patients undergoing PCI have significant postprocedural creatinine kinase CKcreatinine kinase myocardial band CK-MB elevations and approximately 50 of patients have significant post-procedural troponin elevations. Initially, it was felt these elevations were simple enzyme leaks with no long-term implications. 