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Plasma homocysteine level and left ventricular thrombus formation in acute anterior myocardial infarction patients following thrombolytic therapy with t-PA.

AIMS: The aim of this study was to evaluate the relationship between homocysteine levels and the development of left ventricular thrombus in acute anterior myocardial infarction patients directed to thrombolytic therapy.

METHODS AND RESULTS: Seventy-nine patients presenting with ST elevated acute anterior myocardial infarction and treated with thrombolytic agent, t-PA, were included in the study. Two-dimensional echocardiography was used to divide patients into 2 groups according to the presence (n = 14) or absence (n = 65) of thrombus in the left ventricle following myocardial infarction. The levels of fasting plasma total homocysteine, total cholesterol, triglycerides, HDL-cholesterol, LDL-cholesterol, vitamin B12 and folic acid were assessed. There were no significant differences between two groups in terms of age, gender, hyperlipidemia and smoking. History of diabetes mellitus (28.57% versus 6.15%, p = 0.04), peak creatine phosphokinase levels (4153.54 +/- 1228.41 U/L versus 2456.92 +/- 1421.36 U/L, p < 0.001), mean left ventricular wall motion score index (2.21 +/- 0.18 versus 1.83 +/- 0.23, p < 0.001) and total fasting homocysteine levels (18.24 +/- 5.67 mmol/L versus 12.31 +/- 3.52 mmol/L, p < 0.001) were significantly higher in patients with left ventricular thrombus. In multivariate analysis; only diabetes mellitus (p = 0.03), higher wall motion score index (p = 0.001) and higher homocysteine levels (p = 0.04) were independent predictors of left ventricular thrombus formation.

CONCLUSION: Our results suggest that; diabetes mellitus, higher wall motion score index and hyperhomocysteinemia independently increases the risk for the development of left ventricular thrombus formation in patients with acute anterior myocardial infarction following thrombolytic therapy.

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