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  • Title: [Prediction of 2-year outcome by combining TIMI myocardial perfusion grading with sum ST segment resolution in patients with acute myocardial infarction].
    Author: She F, Zhang FC, Wei FJ, Mao JM, Guo LJ, Li HY, Niu J, Feng XH, Zhao YM, Lü JQ, Guo JX, Gao W.
    Journal: Zhonghua Yi Xue Za Zhi; 2005 Oct 26; 85(40):2835-7. PubMed ID: 16324341.
    Abstract:
    OBJECTIVE: To evaluate the value of combining TIMI myocardial perfusion (TMP) grading with sum ST segment resolution (sumSTR) in prediction of the 2-year outcome and heart function in patients with acute myocardial infarction (AMI) after emergency percutaneous intervention (PCI). METHODS: Seventy-seven consecutive patients of AMI with elevated ST segment, 62 males and 15 females, aged 63 +/- 12 (30-91), underwent PCI. TMP grading was used in combination of electrocardiography to calculate the sumSTR so as to evaluate the effect of myocardial reperfusion. The patients with TMP grade 2-3 and sumSTR > or = 30% were included in the group of better perfusion, and those with the TMP grade 0-1 and sumSTR < 30% were included in the group of lower perfusion. The cardiac events, including death, reinfarction, revascularization, angina pectoris, and heart failure were recorded. The left ventricular end-diastolic dimension (LVEDD) and left ventricular ejection fraction (LVEF) were measured by echocardiography 72 hours and 2 years after the PCI. RESULTS: There were 37 patients in the lower perfusion group and 39 patients in the better perfusion group. Cos regression showed that TMP grade 0-1 associated with sumSTR < 30% was an independent factor for 2-year cardiac events (RR = 13.186, 95% CI 2.149 - 80.917, P = 0.005). The LVEDD 2 years after PCI was 60 mm +/- 4 mm, significantly higher than that 72 hours after PCI (53 mm +/- 4 mm. P < 0.01) in the lower perfusion group. The LVEDD increased by 7.1 mm +/- 1.9 mm two years after PCI in the lower perfusion group, significantly more than that in the better perfusion group (1.5 mm +/- 1.2 mm, P < 0.01). The myocardial perfusion after PCI was closely correlated with the extent of heart function improvement 2 years after (chi(2) = 50.58, P < 0.01). CONCLUSION: TMP grading combined with sumSTR helps predict the 2-year outcome and heart function in the patients with AMI after emergency PCI.
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