Red cell distribution width is associated with incident venous thromboembolism (VTE) and case-fatality after VTE in a general population

Trygve S. Ellingsen; Jostein Lappegård; Tove Skjelbakken; Sigrid K. Brækkan; John-Bjarne Hansen

doi:10.1160/TH14-04-0335

Thrombosis and Haemostasis, Table of Contents

Thromb Haemost 2015; 113(01): 193-200
DOI: 10.1160/TH14-04-0335

Stroke, Systemic or Venous Thromboembolism

Schattauer GmbH

Red cell distribution width is associated with incident venous thromboembolism (VTE) and case-fatality after VTE in a general population

Authors

Trygve S. Ellingsen

¹K.G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, University of Tromsø, Norway

²Hematological Research Group, Department of Clinical Medicine, University of Tromsø, Norway
Jostein Lappegård

¹K.G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, University of Tromsø, Norway

²Hematological Research Group, Department of Clinical Medicine, University of Tromsø, Norway
Tove Skjelbakken

¹K.G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, University of Tromsø, Norway

²Hematological Research Group, Department of Clinical Medicine, University of Tromsø, Norway

³Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
Sigrid K. Brækkan

¹K.G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, University of Tromsø, Norway

²Hematological Research Group, Department of Clinical Medicine, University of Tromsø, Norway

³Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
John-Bjarne Hansen

¹K.G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, University of Tromsø, Norway

²Hematological Research Group, Department of Clinical Medicine, University of Tromsø, Norway

³Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway

Abstract

Summary

Recent studies suggest an association between red cell distribution width (RDW) and incident venous thromboembolism (VTE). We aimed to investigate the impact of RDW on risk of incident and recurrent VTE, and case-fatality, in a general population. RDW was measured in 26,223 participants enrolled in the Tromsø Study in 1994–1995. Incident and recurrent VTE events and deaths during follow-up were registered until January 1, 2012. Multivariate Cox proportional hazards regression models were used to calculate hazard ratios (HR) with 95% confidence intervals (CI). There were 647 incident VTE events during a median of 16.8 years of follow-up. Individuals with RDW in the highest quartile (RDW≥13.3%) had 50% higher risk of an incident VTE than those in the lowest quartile (RDW≤12.3%). The association was strongest for unprovoked deep-vein thrombosis (HR highest vs lowest quartile of RDW: 1.8, 95% CI 1.1–3.1). VTE patients with baseline RDW≥13.3% had 30% higher risk of all-cause mortality after the initial VTE event than VTE patients with RDW<13.3%. There were no association between RDW and risk of recurrent VTE. Our findings suggest that high RDW is a risk factor of incident VTE, and that RDW is a predictor of all-cause mortality in VTE patients.

Keywords

Red cell distribution width - venous thromboembolism - recurrence - mortality

Full Text

References

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