ocr: Resident and Staff Physician Patiant Education Chart Posterointerior Myocardial Infarction Posterior Infarcts (Infarcts on the back surtace of the heart) Posteroinferior Infarct: Usually caused by occlusion of the right coronary artery. Reprinted with permission from Resident and: Staff Physician (c)1991-92, 1993 byl Romaine Pierson/Publishers, Inc.