Hi, NT-proBNP is not that high, the ejection fraction 42% belongs to mild heart failure. In your daily life, do you feel chest distress, shortness of breath or disability to walk for a long time? You are suggested to go to see a cardiologist regularly, perform echocardiography each year and check BNP every three to six months. In your daily life, you are not suggested to do fierce exercises, avoid infections, overwork, etc. Those are risk factors for heart failure.