Abstract
Background : We evaluated mid-term hemodynamics and clinical results of endoventricular circular patch plasty (Dor operation) for ischemic cardiomyopathy. Methods : Between January, 2000 and May, 2004, 22 consecutive patients with left ventricular (LV) aneurysm and ischemic cardiomyopathy after myocardial infarction underwent the Dor operation. Hemodynamics and clinical results of the Dor operation were analyzed periodically.Patients were divided two groups according to the preoperative left ventricular end-systolic volume index (LVESVI), which was less than 100 ml/m2 as Group A and which was100 ml/m2 or more as Group B. Results : Postopeartive New York Heart Association (NYHA) functional classfication improved in all survivors to class I or II. Postoperative ejection fraction (EF) increased and postoperative LV volume decreased significantly (p‹0.05) in all survivors.However, the LV volume 3 years after surgery re-enlarged in some cases in which preoperative LVESVI levels were more than 100ml/m2, and LVEF deteriorated significantly (p‹0.05) compared with the postoperative data. Conclusions : As the postoperative LV volume re-enlarged and mitral regurgitation was observed in group B with LVESVI›100ml/m2, careful follow up is necessary.
