Comparative study of intravenous thrombolytic therapy on serum BNP and cardiac function in patients with acute myocardial infarction. Cardiac catheterization laboratory topic research content according to big data have intravenous thrombolytic therapy on acute myocardial infarction patients serum BNP and cardiac function comparative study. Topic: refers to the problem to be studied and solved, but also refers to the title of textbooks and other texts.