<prompt> Answer this question truthfullyWhat is the cause of ventricular myocardial infarction?  <response>: <reason> Acute myocardial infarction involving only the free wall of the right ventricle is a rare event. More commonly, right ventricular infarction is associated with infarction of the inferior wall of the left ventricle, occurring in more than one-third of such cases. , even when thrombolytic therapy is given Ninety percent of right ventricular infarcts result from occlusion of the proximal right coronary artery. Another 5 to 10 percent arise after occlusion of the left anterior descending artery. 