[Acute coronary ischemic syndrome without ST elevation. Role of glycoprotein IIB/IIIA inhibitors and percutaneous coronary interventions].

Myocardial infarction without ST elevation and unstable angina, represents a diagnostic challenge. This Syndromes are caused by rupture of a vulnerable plaque which determines intraluminal thrombosis, distal embolism and coronary obstruction. Administration of IIb/IIIa inhibitors produces some benefits, mainly in those patients who are taking to catheterization. Coronary intervention based on a routine invasive strategy, has decreased major cardiac events principally at long term.