<prompt> Infarcts involving which pa of the myocardium cause aneurysm as a post-Myocardial infarction complicationAnterior transmural MIPosterior transmural MISubendocardial MIInferior wall MI  <response>: Ventricular aneurysms are circumscribed, thinwalled fibrous, noncontractile outpouchings of the ventricle. An aneurysm is a severely scarred poion of infarcted ventricular myocardium that does not contract normally. A ventricular aneurysm may develop in some patients following a large MI especially anterior. Instead, during ventricular systole the aneurysmal poion bulges outward while the rest of the ventricle is contracting. Ventricular aneurysms may occur on the anterior or inferior surface of the hea. Ref: Friedman BM, Dunn MI. Post infarction ventricular aneurysms. Clinical cardiology. 