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. 2017 Jul 6;16(1):81.
doi: 10.1186/s12933-017-0563-1.

Red blood cell distribution width as a prognostic marker in patients with heart failure and diabetes mellitus

Andrew Xanthopoulos  1 , Gregory Giamouzis  2 , Andreas Melidonis  3 , Takeshi Kitai  4 , Efi Paraskevopoulou  5 , Pinelopi Paraskevopoulou  6 , Sotirios Patsilinakos  5 , Filippos Triposkiadis  2 , John Skoularigis  2
Affiliations

Red blood cell distribution width as a prognostic marker in patients with heart failure and diabetes mellitus

Andrew Xanthopoulos et al. Cardiovasc Diabetol. .

Abstract

Background: Red blood cell distribution width (RDW) is an established prognostic marker in acute and chronic heart failure (HF). Recent studies have pointed out a link among RDW, diabetes mellitus (DM) and inflammation. We sought to investigate the prognostic value and longitudinal pattern of RDW in patients with concomitant HF and DM, which remains unknown.

Methods: A total of 218 patients (71 diabetics) who presented with acute HF had RDW measured at admission, discharge and 4, 8 and 12 months post-discharge. The study endpoint was all-cause mortality or rehospitalization for HF during 1-year follow-up.

Results: The study endpoint was met in 33 patients (46.5%) with DM and in 54 patients (36.7%) without DM. RDW at admission was associated with higher event rate both in HF patients with and without DM (adjusted HR: 1.349, p = 0.002, 95% CI 1.120-1.624 and adjusted HR: 1.142, p = 0.033, 95% CI 1.011-1.291 respectively). In addition, a significant interaction was found between diabetes and RDW longitudinal changes (βinteraction = -0.002; SE = 0.001; p = 0.042).

Conclusions: Despite the similar prognostic significance of RDW in diabetic and non-diabetic HF patients regarding the study endpoint, longitudinal changes were found to be significantly different between these two groups of HF patients. This might be due to the higher inflammatory burden that diabetic HF patients carry and may provide new insights to the pathophysiological mechanism of RDW increase in HF, which remains unknown.

Keywords: Diabetes mellitus; Heart failure; Prognosis; RDW.

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Figures

Fig. 1
Fig. 1
a Receiver operating characteristics (ROC) curve for the RDW at admission in patients with HF and DM. b Receiver operating characteristics (ROC) curve for the RDW at admission in patients with HF and without DM. c Receiver operating characteristics (ROC) curve for the RDW at admission in the whole population (HF patients with and without DM)
Fig. 2
Fig. 2
Repeated measures of RDW in diabetics and non-diabetics
See this image and copyright information in PMC

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