The average age 67.99 ± 11.03 years, women accounted for 45.8% of men and women almost equal rate, characteristics serum NT-proBNP concentrations survey (time 1) now enter higher levels of NT-proBNP (2) a week later, the concentration of NT-proBNP (1.2) higher than the group of patients> 65 years of age, NT-proBNP concentrations (1.2) are found in the group of patients with Killip-grade ≥ II statistically significant with p <0.001, serum NT-proBNP concentrations are closely related to the scale of TIMI risk (p <0.001), NT-proBNP serum concentrations related mortality patients with myocardial infarction without ST difference with p <0.001, left ventricular ejection fraction is closely related to the concentration of NT-proBNP.