Heart failure indicators over 5,000 is not normal. Heart failure indicators more than 5000, should refer to the BNP test results, is a marker of heart failure brain natriuretic peptide secretion in heart failure will have a significant increase in the general value is greater than 400pg / ml, more than can be diagnosed as heart failure, more than 5000 indicates that the heart failure is more serious. Heart failure indicators generally include three, there are cardiac ultrasound examination of the ejection fraction, laboratory blood brain natriuretic peptide BNP examination, 6-minute flat walking test assessment, and then combined with the history and clinical symptoms can be diagnosed. 1. Ejection fraction: Clinical examination of heart failure commonly used cardiac ultrasound examination of ejection fraction, normal 55~75%, less than 50% indicates that the heart pumps out insufficient blood. It is an indicator for determining cardiac insufficiency. 2. Brain natriuretic peptide BNP examination: If BNP is greater than 400ng/L, it is considered that the patient may have heart failure, and the positive predictive value is 90%, but there is no specificity, and some patients with lung disease and renal insufficiency may also have elevated BNP. 3. Exercise test: The degree of heart failure can be determined by the patient’s average exercise for 6 minutes, generally less than 450 meters is considered to have moderate heart failure, and more than 450 meters is considered to be mild heart failure. In addition, the chest X-ray examination, according to the heart enlargement, lung bruising, troponin test, etc., combined with clinical symptoms to determine the diagnosis, under the guidance of the doctor to use cardiotonic diuretics, vasodilator drugs to control heart failure.