RT Book, Section A1 Doherty, Gerard M. SR Print(0) ID 58106271 T1 Cardiomyopathy, Idiopathic T2 Quick Answers Surgery YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN 9781259643736 LK accesssurgery.mhmedical.com/content.aspx?aid=58106271 RD 2021/04/14 AB • 2 most common causes: dilated (idiopathic) and ischemic• Idiopathic-Unknown etiology-Often multifactorial resulting in large, dilated heart with poor ventricular function• Ischemic-Coronary artery disease causing severe ventricular dysfunction- See Cardiomyopathy, Ischemic.