Objecitve To investigate the relationship between placental growth factor and acute coronary syndrome(ACS). Methods 70 cases of patients with acute chest pain were enrolled. 36 cases of patients who is posi-tive on cardiac troponin T(cTnT) as treatment group, 24 patients who is negative on cTnT as control group, blood of all patients were detected about PLGF and cTnT in hospital,and coromary angiography examination, Gemini score is used to evaluate coronary artery lesion. Result PLGF and cTnT were elevated in ACS, it had significant difference between two groups(P <0. 01) ,PLGF and cTnT are significantly positive correlated(r= 1.2,P <0. 01), PLGF and cornorary artery lesion severity are significantly positive correlated(r = 1 ,P <0. 01). Conclusion PLGF is helpful to predict ACS attack to comorary heart disease,higher PLGF predicts unstable to coronary artery lesion in coronary heart disease.

Objective To discuss curative effect about radio frequently catheter ablation(RFCA) in frequently single originating premature ventricular beats.Methods 19 patients with frequently single original premature ventricular beats.The site of orgin was determined by activation mapping for the earliest endocardial activation,and by pace mapping for the exact QRS pacing site.Results 18 patients operation obtained immediate success,1 patient was failure,but no complication happened.After RFA in 2 weeks 24 hour Hoter ECG was used to examine arrhythmia condition,and all cases were follow up for 6～24 months after RFA,there were 17 patients who had no recurrence or phenomenon of premature beats augument,1 patient showed other type premature ventricular bearts.Conclusion It is safe and effective about RFA in frequently single origin premature ventricular beats of outflow lane.

Objective To investigate the influence of metformin on metabolic syndrome in patients with coronary artery disease.Methods 52 patients with coronary artery disease and metabolic syndrome were randomly assigned into 2 groups.the control group with 20 cases and the study group with 32 cases.All the patients were treated with standard coronary artery disease therapy and meanwhile the study group was administered with metformin in addition to the basic therapy above.The follow-up time is one year.FPG,2h postprandial glucose,FINS,TG,TC,HDL-C,insulin resistance index and other standards were compared before and after the therapy,and between the 2 groups when the observation was finished.The rate of cardiovascular events was also compared between the 2 groups.Results Compared with the control group,the study group had lower levels of FPG,2h postprandial glucose,FINS,TG and insulin resistance index when the therapy was completed(P<0.05),and the rate of cardiovascular events was also lower(P<0.05).Conclusion Metformin could lower the levels of glucose,FINS,BMI,TG and insulin resistance index in patients with coronary artery disease and metabolic syndrome.Thus,it could reduce and undermine cardlovascular risk factors,protect the cardiovascular system,reduce the rate of cardiovascular events,which fully benefits the patients.