ATHEROSCLEROTIC LESION OF CAROTID ARTERIES IN RHEUMATOID ARTHRITIS AND ITS ASSOCIATION WITH CARDIOVASCULAR RISK FACTORS

Abstract

Introduction. Cardiovascular complications are more often observed in patients with rheumatoid arthritis. Available cardiovascular risk scales were developed for general population and provide in sufficiently adequate assessment of the cardiovascular event likelihood. Studying the risk factors in rheumatoid arthritis patients is necessary for timely diagnosis and prevention.Objective: To analyze the incidence of atherosclerotic lesions in the brachiocephalic arteries in patients with rheumatoid arthritis and associations of this pathology with cardiovascular risk factors.Material and Methods. Two hundred and twelve Caucasian patients with rheumatoid arthritis (age of 58.0 years [48.3; 65.0]; Disease Activity Score-28 of 4.96 [3.86; 5.85]) were included in our study. Patients had American College of Rheumatology-defined rheumatoid arthritis (1987 classification criteria). The ratio of women to men was 5.8 to 1. General clinical examination of patients, the identification of traditional cardiovascular risk factors, and the determination of disease activity were performed. The atherosclerotic progression was assessed by ultrasonography with carotid intima-media thickness measurement and atherosclerotic plaque detection. All patients gave written informed consent before enrollment into the study.Results. Atherosclerotic plaques were found in 59 patients (27.8%), predominantly in older individuals (66.0 [59.0; 73.0] versus 55.0 years [42.0; 61.0], p<0.001) and in men (51.6 versus 23.8% in women, p=0.001). Atherosclerotic plaques were detected in 46.3% of smokers versus 23.4% of non-smokers (p=0.003). Atherosclerotic plaques were more frequently detected in patients with type 2 diabetes mellitus (58.3 versus 26.0%, p=0.036), arterial hypertension (41.7 versus 5.0%, p<0.001), angina pectoris (73.1 versus 21.5%, p<0.001), past history of acute cerebrovascular event (83.3 versus 25.9%, p=0.008), and the presence of post-infarction cardiosclerosis (100.0 versus 26.6%, p=0.03). No atherosclerotic plaques were found in 48 non-climacteric women. Except for the level of rheumatoid factor, all parameters of rheumatoid arthritis activity did not demonstrate statistically significant differences between groups with and without atherosclerotic plaques. The intima-media thickness mainly correlated with age (rs=0.633, p<0.001) and was not associated with rheumatoid arthritis activity. After the use of age- and sex-specific ultrasound criteria, the proportion of patients with intima-media thickening increased from 34.9 to 58.0% (p<0.001). Prevalence rates of most cardiovascular risk factors were associated with age and gender.Conclusion. The present study identified the differences between the incidence rates of traditional risk factors in patients with rheumatoid arthritis compared with the corresponding values in world studies and generated comparable results with REMARKA study confirming a significance of studying this question in the context of the Russian population. The results, obtained in this study, improve understanding of the structure of risk factors in patients with rheumatoid arthritis and may provide the basis for the algorithm of curation of patient with high cardiovascular risk.