Abstract
Controversy surrounds the long-term effects of intracoronary bone marrow stem cell transplantation after ST-elevation acute myocardial infarction (STEAMI). We report on the long-term changes in left ventricular function observed in 29 patients with STEAMI who were treated using this technique. Cardiac magnetic resonance imaging was performed at baseline, 6 months after transplantation, and long-term follow-up (median 27 months, interquartile range 24–35 months). The left ventricular ejection fraction had improved significantly by 6 months (from 47.6 ± 8.9% to 52.7 ± 11.6%; P = .001) and this improvement was maintained long-term, at 52.4 ± 11.8% ( P = .01 vs. baseline and P = .999 vs. 6 months). There was no significant change from baseline in end-diastolic or end-systolic ventricular volume. Our findings indicate the improvement in injection fraction occurs soon after stem cell transplantation, within the first 6 months, and remains unchanged at long-term follow-up. Full English text available from: www.revespcardiol.org
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