Objective To investigate the efficacy of milrinone micropump in treatment of chronic heart failure(CHF),and the influence to the level of amino-terminal B-type natriuretic peptide precursor(NT-proBNP) in serum.Methods 120 cases with CHF were selected,they were randomly divided into the observation group and the control group according to a random number table.The patients of the control group were treated with standardized anti -conventional treatment of heart failure according to their heart function,the patients of the observation group were given milrinone micropump on the basis of the standardized anti-conventional treatment of heart failure.The efficacy of clinical conditions 1 week after treatment and NT-proBNP levels in serum before and after treatment were compared between two groups.Results The clinical efficacy of the observation group was 95.00％,which was higher than 76.67％ of the control group,the difference was statistically significant(x2 =8.67,P ＜ 0.05).The serum level of NT-proBNP of the observation group was (38.9 ± 9.2) ng/L,which was significantly lower than (86.3 ± 32.4) ng/L of the control group,the difference was statistically significant (t =9.86,P ＜ 0.05).Conclusion Milrinone micro pump used in the treatment of CHF can significantly improve the clinical efficacy,and lower the serum level of NT-proBNP,improve heart function,it is safe and reliable and worth to application in the clinical.

Objective To compare the efficiency and safety of intracoronary transplantation of peripheral blood stem cells (PBSC) between elderly and younger patients with heart failure after myocardial infarction (MI). Methods Twenty-five patients with heart failure after MI were divided into aged group(≥60 years,n=13) and non-aged group (＜60years,n=12) to receive intracoronary PBSC transplantation (PBSCT) following bone marrow cells mobilized by granulocyte colony-stimulating factor (G-CSF). Clinical data including coronary lesion characteristic, left ventricular shape, infarct region area and cardiac function, as well as adverse side effects between the two groups were compared. Left ventricular function was evaluated before and 6 months after the treatment by single photon emission computed tomography (SPECT). Results At 6 months, the left ventricular ejection fraction (LVEF) and 6 minute walk test (6MWT)distance increased, while the left ventricular diastolic diameter (LVDd) decreased significantly in both groups. There were no significant difference between the two groups in absolute change in the cardiac function parameters. Conclusions The present study demonstrated that autologous intracoronary PBSCT might be safe and feasible for both old and younger patients with heart failure after MI and left ventricular function is significantly improved.