What diagnostic method is used to confirm Congestive Heart Failure (CHF)?

To confirm Congestive Heart Failure (CHF), clinicians often rely on a combination of diagnostic methods. The most direct and specific test used in practice is the measurement of elevated B-type natriuretic peptide (BNP) levels. BNP is a hormone produced by the heart when it is under stress, and elevated levels are commonly found in patients with heart failure. A chest X-ray (CXR) can also provide valuable information, as it may show signs of fluid overload, such as pulmonary congestion or cardiomegaly, which can be indicative of CHF.

While an echocardiogram is important for assessing cardiac function and structure, which can also help in diagnosing CHF, the combination of elevated BNP and CXR findings is standard practice for confirming heart failure in clinical settings. This approach provides a more comprehensive picture of the patient's condition. Thus, the inclusion of both elevated BNP and chest X-ray makes the correct answer a robust method for confirming CHF.