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Incident Heart Failure in Patients With Rheumatoid Arthritis: A Nationwide Cohort Study.

Incident Heart Failure in Patients With Rheumatoid Arthritis: A Nationwide Cohort Study.
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Khalid U, Egeberg A, Ahlehoff O, Lane D, Gislason GH, Lip GYH, Hansen PR,


Khalid U, Egeberg A, Ahlehoff O, Lane D, Gislason GH, Lip GYH, Hansen PR, (click to view)

Khalid U, Egeberg A, Ahlehoff O, Lane D, Gislason GH, Lip GYH, Hansen PR,

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Journal of the American Heart Association 2018 01 197(2) pii e007227
Abstract
BACKGROUND
Rheumatoid arthritis (RA) is a chronic inflammatory disease associated with a wide range of comorbidities, including cardiovascular disease, but its association with heart failure (HF) is not fully clear. We investigated the risk of incident HF in a nationwide cohort of patients with RA.

METHODS AND RESULTS
The study comprised the entire Danish population aged ≥18 years followed from January 1, 2008 until first hospitalization for HF, emigration, December 31, 2012, or death. Information on comorbidity, medication, and socioeconomic status was identified by individual-level linkage of administrative registers. Patients with a rheumatologist diagnosis of RA between 1978 and 2008 were included. The primary study outcome was incident HF defined as first hospital admission for HF. Incidence rates of HF per 1000 person-years were calculated and incidence rate ratios adjusted for age, sex, calendar year, comorbidity, medications, socioeconomic status, smoking, and alcohol consumption were estimated. A total of 4 305 225 subjects with no history of HF were eligible for analysis at the study start. Of these subjects, 24 343 developed RA and 50 623 were hospitalized for HF. Overall incidence rates of incident HF were 2.43 and 6.64 for the reference population (n=49 879) and patients with RA (n=744), respectively. Correspondingly, the fully adjusted incidence rate ratio for incident HF was increased in patients with RA with incidence rate ratio 1.30 (95% confidence interval, 1.17-1.45).

CONCLUSIONS
In this cohort study, RA was associated with an increased hospitalization for HF. These findings add significantly to the existing evidence of RA as a clinically relevant risk factor for HF.

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