High Wall Motion Score Index after Acute Myocardial Infarction is Associated with Worse In-Hospital Outcome

Area of Science:

• Cardiology
• Diagnostic Imaging
• Clinical Outcomes Research

Background:

• Myocardial Infarction (MI) is a leading global cause of death and disability.
• Coronary heart disease incidence is high, making it the second leading cause of mortality.
• Early risk stratification is crucial for improving patient outcomes after acute MI.

Purpose of the Study:

• To evaluate the relationship between echocardiographic Wall Motion Score Index (WMSI) and in-hospital outcomes in acute myocardial infarction patients.
• To determine if WMSI assessed within 24 hours of admission can predict adverse events.
• To assess the utility of echocardiography as an affordable risk stratification tool.

Main Methods:

• Prospective study of 100 patients admitted with their first acute myocardial infarction.
• Echocardiographic Wall Motion Score Index (WMSI) was assessed within 24 hours of admission.
• In-hospital outcomes including heart failure (Killip class), arrhythmia, and mortality were recorded.

Main Results:

• Higher WMSI (≥2) was significantly associated with increased rates of diabetes mellitus, dyslipidemia, anterior MI, and heart failure (Killip classes III and IV).
• Patients with WMSI ≥2 showed significantly higher incidence of arrhythmia and in-hospital mortality compared to those with WMSI <2.
• An increasing WMSI correlated with increasing Killip class and worse overall in-hospital outcomes.

Conclusions:

• Early echocardiographic assessment of WMSI is a valuable predictor of in-hospital outcomes in acute myocardial infarction.
• Higher WMSI values are linked to more severe cardiac dysfunction and increased risk of adverse events.
• Echocardiography is an accessible and effective tool for early risk stratification in acute MI patients.