Which statement about natriuretic peptide levels is true in heart failure management?

• A. They’re only useful for diagnosis, not prognosis
• B. They provide prognostic information and help guide therapy intensity
• C. They measure hepatic function
• D. They quantify bleeding risk

Answer: (B)

Natriuretic peptides mirror the heart’s filling pressures and stretch, so in heart failure they carry important information beyond diagnosis. These hormones rise when the ventricles are stressed by fluid overload, and higher levels are linked to greater risk of worse outcomes, including hospitalization and mortality. That prognostic signal is why they’re used not only to help diagnose heart failure but to tailor and adjust treatment. If levels fall with therapy, it suggests the heart is under less stress and the patient is responding, supporting continued or stepped-down therapy. If levels stay high or rise, it may prompt intensification of diuretics, optimization of guideline-directed medical therapy, or closer monitoring. They are not measures of hepatic function or bleeding risk, and their value lies in prognosis and guiding how aggressively to treat, not in measuring liver function or bleeding risk. Note that levels can be influenced by factors like age, renal function, and body habitus, so clinicians interpret them in the broader clinical context.