BNP is a critical indicator for which condition?

B-type Natriuretic Peptide (BNP) is a hormone that is produced by the heart, specifically by the ventricles, in response to changes in pressure that occur when heart failure develops or worsens. When the heart is unable to pump effectively, as seen in Congestive Heart Failure (CHF), BNP levels increase significantly. Therefore, measuring BNP levels is a useful clinical tool to assess the severity of heart failure and differentiate it from other causes of dyspnea.

An elevated BNP level confirms the diagnosis of CHF and can help guide treatment decisions. This hormone's primary use in clinical settings is to evaluate and monitor heart failure, making it a critical indicator for this condition.