RT Journal Article
SR Electronic
T1 Restoration of left ventricular synchronous contraction after acute myocardial infarction by stem cell therapy: new insights into the therapeutic implication of stem cell therapy for acute myocardial infarction
JF Heart
JO Heart
FD BMJ Publishing Group Ltd and British Cardiovascular Society
SP 995
OP 1001
DO 10.1136/hrt.2007.124701
VO 94
IS 8
A1 S-A Chang
A1 H-K Kim
A1 H-Y Lee
A1 S-Y Choi
A1 B-K Koo
A1 Y-J Kim
A1 D-W Sohn
A1 B-H Oh
A1 Y-B Park
A1 Y-S Choi
A1 H-J Kang
A1 H-S Kim
YR 2008
UL http://heart.bmj.com/content/94/8/995.abstract
AB Objective: To evaluate the effects of stem cell therapy on restoration of the left ventricular (LV) synchronous contraction in patients with acute myocardial infarction (AMI). Methods: 40 patients with AMI who underwent successful coronary revascularisation were randomly allocated to the cell infusion or the control group. Evaluations were performed with echocardiographic tissue synchronisation imaging to determine LV dyssynchrony and with cardiac magnetic resonance imaging to estimate LV ejection fraction (LVEF) at baseline and at 6 months. To quantify the severity of systolic LV dyssynchrony, the standard deviations of time to peak systolic velocity of the 12 LV segments (Ts-SD) were calculated. Results: At 6 months, greater improvements of Ts-SD (ΔTs-SD: −45.0 (40.2) vs 5.0 (39.9) ms, p<0.001) and LVEF (ΔLVEF: 6.8% (9.1%) vs −0.2% (6.9%), p = 0.015) relative to the corresponding baseline values were observed in the cell infusion group than in the control group. By multivariate analysis, ΔTs-SD and baseline LVEF emerged as the independent determinants of LVEF improvement and cell infusion, and baseline Ts-SD as the determinant of ΔTs-SD improvement. Maximal exercise capacity measured by symptom-limited treadmill testing correlated well with Ts-SD but not with LVEF at 6 months of follow-up. Conclusion: Stem cell therapy had a favourable effect on the restoration of LV synchronous contraction in patients with AMI.