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International Journal of Hypertension
Volume 2016, Article ID 2014201, 13 pages
http://dx.doi.org/10.1155/2016/2014201
Research Article

The Hypertension of Hemophilia Is Not Explained by the Usual Cardiovascular Risk Factors: Results of a Cohort Study

1Department of Medicine, Division of Hematology/Oncology, University of California San Diego, San Diego, CA, USA
2Department of Medicine, University of British Columbia, Vancouver, BC, Canada
3School of Medicine, Section of Hematology/Oncology, Tulane University, New Orleans, LA, USA
4Washington Center for Bleeding Disorders at Bloodworks NW, Seattle, WA, USA
5Orthopaedic Hemophilia Treatment Center, Orthopaedic Institute for Children, Los Angeles, CA, USA
6Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA

Received 3 June 2016; Accepted 12 October 2016

Academic Editor: Claudio Borghi

Copyright © 2016 Richard F. W. Barnes et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. The etiology of the high prevalence of hypertension among patients with hemophilia (PWH) remains unknown. Methods. We compared 469 PWH in the United States with males from the National Health and Nutrition Examination Survey (NHANES) to determine whether differences in cardiovascular risk factors can account for the hypertension in hemophilia. Results. Median systolic and diastolic BP were higher in PWH than NHANES () for subjects not taking antihypertensives. Those taking antihypertensives showed similar differences. Differences in both systolic and diastolic BP were especially marked among adults <30 years old. Differences between PWH and NHANES persisted after adjusting for age and risk factors (body mass index, renal function, cholesterol, smoking, diabetes, Hepatitis C, and race). Conclusions. Systolic and diastolic BP are higher in PWH than in the general male population and especially among PWH < 30 years old. The usual cardiovascular risk factors do not account for the etiology of the higher prevalence of hypertension in hemophilia. New investigations into the missing link between hemophilia and hypertension should include age of onset of hypertension and hemophilia-specific morbidities such as the role of inflammatory joint disease.