Importance of the location of myocardial infarction and ventricular aneurysm on left ventricular function.

This experimental study was performed to evaluate the possibility that the site per se of infarction or ventricular aneurysm after acute myocardial infarction had a unique important role in left ventricular function. Acute myocardial infarction and ventricular aneurysm were made in either the anterior or the inferior wall of the left ventricle using 24 dogs. Infarction was made by the multiple ligation method. The weight of the infarcted area was 23.1•}3.9% of the left ventricular free wall in the anterior wall group (12 dogs), and was 23.8•}4.8% in the inferior wall