ocr: Resident and Staff PhysicaM Patiant Education Chart Posterolateral Myocardial Infarction Posterior Infarcts (Infarcts on the back surtace of the heart) Posterolateral Intarct Caused by occlusion of the circumtlex branch of the left coronary artery. Reprinted with permission from Resident and: Staff Physician (c)1991-92, 1993 byl Romaine Pierson/Publishers, Inc.