Impact of Stent Length and Diameter on Patients Undergoing Primary PCI

ST-segment Elevation Myocardial Infarction (STEMI)

The goal of the study is to evaluate the Impact of coronary stent length and/or diameter in patients with ST segment myocardial infarction undergoing primary PCI, on Short term clinical outcomes.

* ST segment elevation myocardial infarction is serious condition to the blood supply to the heart muscle. Rapid reperfusion of the ischemic myocardium using percutaneous coronary intervention (PCI) is the standard treatment for acute myocardial infarction (MI) to rescue the ischemic myocardium and reduce infarction size. * There are two types of stents: 1. Drug-eluting stent which achieving local drug delivery to the injured blood vessel at the time of intervention, a drug is released from a polymer coating or loaded directly onto the stent (2). This is the best one. 2. Bare metal stent is the old one and not effective as DES in reducing vascular restenosis by suppressing smooth muscle cell (SMC) proliferation. * The management of long coronary lesions by percutaneous coronary intervention (PCI) has become increasingly important because of the rising incidence of long or complex lesions in aging populations (3) Stent length has been considered as an important predictor of adverse events after PCI. The exact impact of lesion length on the short- and long-term clinical outcomes of DES implantations is not clear yet. * Myocardial necrosis complicates one-third of percutaneous coronary intervention (PCI) and may adversely affect the outcome(4)

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