Prognostic Value of Reticulocyte Production Ability in Patients With Chronic Heart Failure
Motoki Nakao1, Toshiyuki Nagai1, Atsushi Tada1
1Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
The Canadian Journal of Cardiology
|February 9, 2025
Summary
Higher reticulocyte production index (RPI) in heart failure (HF) patients indicates poorer outcomes, regardless of anemia status or iron levels. This suggests RPI is a valuable prognostic marker in HF.
Area of Science:
- Cardiology
- Hematology
- Internal Medicine
Background:
- Anemia is common in heart failure (HF) patients and linked to mortality.
- The prognostic significance of erythropoiesis quality in HF remains unclear.
Purpose of the Study:
- To investigate the prognostic value of reticulocyte production index (RPI) in patients with chronic heart failure (HF).
Main Methods:
- Prospective study of 1328 symptomatic chronic HF patients.
- Reticulocyte production ability assessed using reticulocyte production index (RPI).
- Patients categorized by anemia and median RPI; primary outcome: all-cause death or HF hospitalization.
Main Results:
- Higher RPI associated with increased risk of primary outcome (death/HF hospitalization).
- This association remained significant after adjusting for covariates (aHR 1.37).
- Higher RPI correlated with higher erythrocyte counts in non-anemic patients, but not in anemic patients.
Conclusions:
- Elevated RPI, potentially indicating impaired erythrocyte maturation or lifespan, predicts worse outcomes in HF patients.
- Prognostic value of RPI in HF is independent of anemia and iron status.
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