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Abstract Number: 1262

Rheumatoid Arthritis Patients with Higher Disease Severity and Subclinical Carotid Plaque Experience More Cardiovascular Events Despite a Favorable Conventional Cadiovascular Risk Profiles

Yeon-Ah Lee1, Somi Kim1, Sang-Hoon Lee2, Ran Song2, Hyung In Yang2 and Seung-Jae Hong1, 1Division of Rheumatology, Department of Internal Medicine, Kyung Hee University, Seoul, South Korea, 2Rheumatology, Hospital at GANGDONG, Kyung Hee University, Seoul, South Korea

Meeting: 2012 ACR/ARHP Annual Meeting

Keywords: Atherosclerosis, Cardiovascular disease, intima medial thickness and rheumatoid arthritis (RA)

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Session Information

Title: Rheumatoid Arthritis - Clinical Aspects II: Clinical Features & Comorbidity/Cardiovascular Disease

Session Type: Abstract Submissions (ACR)

Background/Purpose:

It has been shown that patients with rheumatoid arthritis (RA) experience cardiovascular (CV) events more often than expected. Increased risks of CV diseases in RA patients cannot be fully explained by conventional CV risk factors. This raises the possibility that the systemic inflammatory burden in RA may bring about its high CV event rate by causing accelerated atherosclerosis. This study was designed to evaluate the extent of subclinical atherosclerosis by measuring intima-media thickness of the carotid arteries (C-IMT) and the presence of plaque among RA patients and controls and to determine whether subclinical atherosclerosis, RA associated features, and other conventional CV risk factors are associated with later development of CV diseases (CVDs) in RA patients.

Methods:

C-IMT was measured in 126 RA patients and 85 OA patients as controls who had no experience of CV events. The C-IMT was evaluated at common carotid arteries (CCAs), carotid bifurcation (BF) and internal carotid arteries (ICAs), bilaterally. Mean and maximal (max) IMTs were calculated from three measurements at each site. The following data were obtained for every patient: age, sex, body mass index (BMI), presence of bone erosions, rheumatoid factor, anti-CCP, medications, hypertension, hypercholesterolemia, diabetes mellitus, smoking status, family history of CVDs, ESR and CRP levels. Thereafter, these patients have been followed-up and examined the CV event rate during seven years. The CVD was defined as myocardial infarction, unstable angina, cardiac arrest, or death due to ischemic heart diseases.

Results:

Although CV risks were fewer in RA than in OA, the mean and max C-IMT did not show a significant difference between two diseases groups. We found the higher presence of carotid plaques in RA patients than in OA patients. During follow-up, 21 patients experienced CV events. The incidence of CV events was higher in RA than OA (15.0% vs. 3.5%, p=0.004). But, the conventional CV risk factors such as DM, hypertension and high BMI were fewer in RA than in OA (10.3%, 27.7%, 34.1% vs. 28.2%, 55.2%, 57.6%, p=0.000). More CV events occurred in RA patients who initially showed the presence of subclinical plaques. The duration of CV event-free survival was shorter in RA patients with carotid plaque than those without (10 vs. 31 months, p=0.051). The RA patients who developed CVD later had more bony erosions, higher positivity for rheumatoid factor or anti-CCP, higher doses of steroid and higher levels of ESR and CRP, than those who did not.

Conclusion:

Despite a favorable conventional CV risk profile, RA patients had a significantly higher incidence rate of CVD than OA patients. RA itself was an independent risk factor for CVD. Especially, RA patients with carotid plaque, seropositivity, bony erosion, higher ESR and CRP are at higher risk of CVD.


Disclosure:

Y. A. Lee,
None;

S. Kim,
None;

S. H. Lee,
None;

R. Song,
None;

H. I. Yang,
None;

S. J. Hong,
None.

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