Red cell distribution width: an inexpensive and powerful prognostic marker in heart failure

Area of Science:

• Cardiology
• Hematology
• Clinical Medicine

Background:

• Red cell distribution width (RDW) is a known prognostic marker in heart failure (HF).
• N-terminal brain natriuretic peptide (NT-proBNP) is a well-established biomarker for HF prognosis.
• Direct comparison of RDW and NT-proBNP prognostic capabilities in HF is lacking.

Purpose of the Study:

• To compare the prognostic power of RDW with NT-proBNP in patients with heart failure.
• To determine if RDW provides independent prognostic information in HF.
• To evaluate the clinical utility of RDW in HF risk stratification.

Main Methods:

• A cohort of 1087 patients referred to a specialist HF clinic was analyzed.
• Comprehensive assessments included medical history, echocardiography, and blood tests.
• Cox-regression models were used to assess the independent prognostic relationship of RDW and NT-proBNP with all-cause mortality.

Main Results:

• Both RDW and NT-proBNP were independently prognostic for all-cause mortality in HF patients (P < 0.001).
• The relative risk associated with RDW and NT-proBNP was similar across the first to third quartiles.
• A more pronounced increase in risk was observed for NT-proBNP in the fourth quartile compared to RDW.

Conclusions:

• RDW is an accessible and independently prognostic marker in HF patients.
• RDW demonstrates comparable prognostic power to NT-proBNP, particularly in lower to intermediate risk groups.
• RDW should be considered for integration into prognostic models for heart failure.