Myocardial Work for Prediction of Left Ventricular Remodeling in Patients With STEMI

Value of Myocardial Work for Prediction of Left Ventricular Remodeling in Patients With ST-Elevation Myocardial Infarction Treated by Primary Percutaneous Intervention

The study intends to investigate the alteration of regional myocardial work in patients with acute anterior myocardial infarction underwent primary percutaneous coronary intervention (PCI), and compare the distribution of regional myocardial work in patients with/without early remodeling at acute phase and 3-month follow-up.

Inclusion Criteria:

• Anterior myocardial infarct (anterior myocardial infarct is defined as persistent chest pain for 30 mins at least, with ST-segment elevation of at least 0.2 mV in two or more contiguous precordial leads) within 12 hours after onsets of symptom;
• Left anterior descending (LAD) as culprit vessel, with TIMI 0-1 grade.

Exclusion Criteria:

• significant valvular disease;
• cardiomyopathy; l
• left bundle branch block;
• atrial fibrillation;
• previous myocardial infarction (MI);
• history of cardiac surgery;
• pacemaker implantation.