Effect of percutaneous coronary intervention on cardiac contractive function of patients with myocardial infarction

AIM: To assess the effect of percutaneous coronary intervention (PCI) on the cardiac contractive function and remodeling of the left ventricle of myocardial infarction patients over a 3-month period. METHODS: 30 cases with acute myocardial infarction (AMI) and 22 old myocardial infarction (OMI) patients were treated by percutaneous transluminal coronary angioplasty (PTCA) and stent. Three-month follow-up was conducted after PCI. The left ventricular end diastolic diameter (LVEDd), left atrial diameter(LAd), left ventricular end diastolic volume(LVEDV), left ventricular end systolic volume(LVESV), left ventricular ejection fraction(LVEF) and the left ventricular fractional shortening (LVFS) indexes were measured by Doppler echocardiography and the parameters before and after PCI were compared. RESULTS: The LVED, LAD, LVEDV, LVESV indexes were significantly reduced (P0.01) in after PCI than in before PCI. LVEF and LVFS indexes were increased apparently (P0.01), especially in the AMI group. The earlier the revascularization of coronary artery, the better the cardiac function recovers. CONCLUSION: The AMI patients with left ventricular dysfunction should be treated by PCI as soon as possible, which can improve the left ventricular contractive function apparently and partly impede the remodeling of the left ventricle