Objective Systolic Function Recuperation Assessed by Echocardiography

Objective Systolic Function Recuperation Assessed by Echocardiography

The purpose of this study is to evaluate left ventricular systolic ejection fraction and anterior or apical akinesis 1 month and 3 months after a myocardial infarction treated with primary PCI to determine whether improvement at 1 month differs from improvement at 3 months.

Inclusion Criteria:

• Older than 18 years old
• ST elevation myocardial infarction treated with primary PCI
• Anterior or apical akinesis and left ventricular ejection fraction ≤ 45% on early echocardiography (48hours - 7 days post myocardial infarction)
• Initial ECG showing at least 1 mm ST elevation in 2 leads corresponding to the same vascular territory

Exclusion Criteria:

• Known left ventricular systolic dysfunction before myocardial infarction
• Left bundle branch block
• Vital prognosis less than 6 months
• Cardiogenic shock
• Rescue PCI
• Sub-optimal echocardiographic imaging (contrast use is allowed)
• Significant valvular heart disease (moderate or severe)
• Surgical revascularization
• Pregnancy or breastfeeding
• Incapacity to provide informed consent