High N-terminal B-type natriuretic peptide proximity suggests that a patient may be experiencing heart failure. B-type natriuretic peptide refers to brain natriuretic peptide. A brain natriuretic peptide test is a test that detects the amount of brain natriuretic peptide in the blood. Brain natriuretic peptide is a growth hormone that is produced and metabolized by the heart, and testing for brain natriuretic peptide can provide insight into how well the heart is functioning. Normally, the amount of brain natriuretic peptide in the blood is low, but if there is heart failure, the heart produces more brain natriuretic peptide, which leads to an increase in brain natriuretic peptide levels in the blood. B-type natriuretic peptide is mainly used in the secretion of ventricular myocytes, which has weak vasodilating and diuretic effect to excrete sodium. high B-type natriuretic peptide is usually due to endogenous hormone being pulled by the ventricular wall, which indicates that there is a problem of heart failure in the heart function. The higher the B-type natriuretic peptide, the more severe the heart failure. Patients with high N-terminal B-type natriuretic peptide should go to the hospital in time and receive standardized treatment under the guidance of a doctor.