B-Type Natriuretic Peptide Test
This test is used to assist in the
diagnosis of congestive heart failure (CHF).
B-type natriuretic peptide (BNP),
also referred to as brain natriuretic peptide, is a member of a family of
structurally similar peptide hormones that includes atrial natriuretic peptide.
BNP is predominantly secreted by the ventricles of the heart in response to
increased pressure. BNP acts as a vasodilator and has diuretic and natriuretic
properties. BNP suppresses both sympathetic tone and the renin-angiotensin
system. These physiologic effects serve to reduce intraventricular pressure
and improve the symptoms of congestive heart failure (CHF).
BNP levels correlate with end-diastolic
pressure and tend to be increased in patients with diminished left ventricular
ejection fraction. BNP levels have been shown to be useful in the diagnosis
of patients with symptoms that are consistent with CHF.
Private MD
Lab Services offers the following test for B-Type Natriuretic
Peptide:
