Cell transplantation for treatment of heart failure is a novel field of translational research that offers the perspective of developing curative approaches by regenerating or "rejuvenating" lost and/or diseased myocardium and inducing growth of new blood vessels. Based on the safety and preliminary efficacy testing in previous trials, a stringent efficacy testing will be performed in this study. Sixty patients who had myocardial infarction in the past and now need bypass surgery for ongoing coronary artery disease will undergo either bypass surgery and placebo treatment or bypass surgery and injection of CD133 bone marrow cells directly in the heart muscle. The study will be fully blinded, i.e. neither the patient nor the surgeon knows what substance is injected (placebo or cell product). Patients will be followed for 6 months and various heart function measurements will be performed.
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Left ventricular ejection fraction at rest, measured six months postoperatively, measured by MRI