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Mantel, Ängla, MD; Holmqvist, Marie, MD, PhD; Andersson, Daniel C., MD, PhD; Lund, Lars H., MD, PhD; Askling, Johan, MD, PhD
Journal of the American College of Cardiology, 03/2017, Volume: 69, Issue: 10Journal Article
Abstract Background It is unknown whether the increased risk of heart failure (HF) in rheumatoid arthritis (RA) is independent of ischemic heart disease (IHD). Objectives This study sought to investigate the relative risk of HF overall and by subtype (ischemic and nonischemic HF) in patients with RA and to assess the impact of RA disease factors. Methods Two contemporary cohorts of RA subjects were identified from Swedish patient and rheumatology registries and matched 1:10 to general population comparator subjects. A first-ever HF diagnosis (classified as ischemic HF or nonischemic HF based on the presence of IHD) was assessed through registry linkages. Relative risks for a history of HF before RA onset were calculated through odds ratios. Relative risks of incident HF in RA were calculated as hazard ratios (HRs). Results By the time of RA onset, a history of HF was not more common in RA. In the new-onset RA cohort, the overall HRs for subsequent HF (any type), ischemic HF, and nonischemic HF were between 1.22 and 1.27. The risk of nonischemic HF increased rapidly after RA onset, in contrast to the risk of ischemic HF. High disease activity was associated with all HF types but was most pronounced for nonischemic HF. In the cohort of patients with RA of any duration, the HRs were between 1.71 and 1.88 for the different HF subtypes. Conclusions Patients with RA are at increased risk of HF that cannot be explained by their increased risk of IHD. The increased risk of nonischemic HF occurred early and was associated with RA severity.
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