Lower limb arterial incompressibility and obstruction in rheumatoid arthritis

被引:47
作者
del Rincón, I
Haas, RW
Pogosian, S
Escalante, A
机构
[1] Univ Texas, Hlth Sci Ctr, Dept Med, Div Clin Immunol & Rheumatol, San Antonio, TX 78229 USA
[2] Univ Texas, Hlth Sci Ctr, Frederic C Bartter Gen Clin Res Ctr, San Antonio, TX 78229 USA
关键词
D O I
10.1136/ard.2003.018671
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background: Despite increased cardiovascular morbidity and mortality in rheumatoid arthritis, the peripheral arteries remain understudied. Objective: To examine the lower limb arteries in age and sex matched, non-smoking subjects with and without rheumatoid arthritis. Methods: The ankle-brachial index (ABI) was measured at the posterior tibial and dorsal pedal arteries. Arteries were classified as obstructed with ABI less than or equal to0.9, normal with ABI >0.9 but less than or equal to1.3, and incompressible with ABI > 1.3. Multinomial logistic regression was used to estimate differences in ABI between patients and controls, adjusting for cardiovascular risk factors, rheumatoid arthritis manifestations, inflammation markers, and glucocorticoid dose. Results: 234 patients with rheumatoid arthritis and 102 controls were studied. Among the rheumatoid patients, 66 of 931 arteries (7%) were incompressible and 30 (3%) were obstructed. Among the controls, three of 408 arteries (0.7%) were incompressible (p = 0.002) and four (1%) were obstructed (p = 0.06). At the person level, one or more abnormal arteries occurred among 45 rheumatoid patients (19%), v five controls (5%, p = 0.001). The greater frequency of arterial incompressibility and obstruction in rheumatoid arthritis was independent of age, sex, and cardiovascular risk factors. Adjustment for inflammation markers, joint damage, rheumatoid factor, and glucocorticoid use reduced rheumatoid arthritis v control differences. Most arterial impairments occurred in rheumatoid patients with 20 or more deformed joints. This subgroup had more incompressible (15%, p less than or equal to0.001) and obstructed arteries (6%, p = 0.005) than the controls, independent of covariates. Conclusions: Peripheral arterial incompressibility and obstruction are increased in rheumatoid arthritis. Their propensity for patients with advanced joint damage suggests shared pathogenic mechanisms.
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收藏
页码:425 / 432
页数:8
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