BNP (B-type natriuretic peptide) is a cardiac neurohormone secreted from cardiac ventricular myocyte in response to increased ventricular wall stretch or wall tension, increased ventricular volume or pressure. It is a potent vasodilator and it promotes diuresis. The half-live is short, about 18-22 minutes.

Potential usefulness are:

1. Diagnosis for HF

2. Follow up and Prognosis of heart failure

3. Treatment for acute decompensation

4. Potential outpatient intermittent treatment in severe heart failure

5. NT-proBNP (NT = N Terminal)

When cardiac myocyte Pro-BNP enter the circulation it split into BNP which is an active neurohormone and NT-proBNP which is inactive part but with longer half life. Level of NT-proBNP can be used for diagnosis, follow up and prognosis of heart failure the same way as BNP level. The physicians need to know whether the report are BNP or NT-proBNP since the level are significantly different and some laboratory may not label it correctly.


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