Objectives To assess the effect of delayed coronary stent implantation on left ventricle remodeling after acute myocardial infarction（AMI）. Methods Sixty patients with ST-segment elevation acute interior wall myocar...Objectives To assess the effect of delayed coronary stent implantation on left ventricle remodeling after acute myocardial infarction（AMI）. Methods Sixty patients with ST-segment elevation acute interior wall myocardial infarction （AAMI） and with the total occluded left anterior descending coronary artery conformed by angiography at 10. 2 ± 2. 5 （7 - 14） days after onset were divided into two groups according to stent implantation ： stenting group and control group. Two dimensional echocardiogram was performed before operation （9.0 ± 2.5 days after AMI） and in 2 and 6 months after onset of AAMI respectively to detect left ventricular function（ LVEF）, left ventricular end-diastolic volume index （LVEDVI）, left ventricular end-systolic volume index （LVESVI） and left ventricular wall motion abnormality （VWMA）. Results LVEF, LVEDVI, LVESVI and VWMA score were similar in two groups before operation and in 2 months after the onset of AAMI. LVEF and VWMA scores did not changed significantly at 6 months in each group compared with those before operation and in 2 months （ P 〉 0. 05 ）. But LVEDVI and LVESVI were improved significantly in the successful PCI group than those before operation and in the control group（ P 〈 0. 01, P 〈 0. 05 ）. Conclusions Delayed coronary stent implantation in AAMI could prevent the late phase but the early phase of left ventricular remodeling after AMI.展开更多
文摘Objectives To assess the effect of delayed coronary stent implantation on left ventricle remodeling after acute myocardial infarction（AMI）. Methods Sixty patients with ST-segment elevation acute interior wall myocardial infarction （AAMI） and with the total occluded left anterior descending coronary artery conformed by angiography at 10. 2 ± 2. 5 （7 - 14） days after onset were divided into two groups according to stent implantation ： stenting group and control group. Two dimensional echocardiogram was performed before operation （9.0 ± 2.5 days after AMI） and in 2 and 6 months after onset of AAMI respectively to detect left ventricular function（ LVEF）, left ventricular end-diastolic volume index （LVEDVI）, left ventricular end-systolic volume index （LVESVI） and left ventricular wall motion abnormality （VWMA）. Results LVEF, LVEDVI, LVESVI and VWMA score were similar in two groups before operation and in 2 months after the onset of AAMI. LVEF and VWMA scores did not changed significantly at 6 months in each group compared with those before operation and in 2 months （ P 〉 0. 05 ）. But LVEDVI and LVESVI were improved significantly in the successful PCI group than those before operation and in the control group（ P 〈 0. 01, P 〈 0. 05 ）. Conclusions Delayed coronary stent implantation in AAMI could prevent the late phase but the early phase of left ventricular remodeling after AMI.
