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Cardiovascular Risk Factors before Onset of Rheumatoid Arthritis Are Associated with Cardiovascular Events after
Heidi Kokkonen1, Linda Johansson1, Hans Stenlund2
1Department of Public Health and Clinical Medicine, Rheumatology, Umeå University, 901 87 Umeå, Sweden.
Insights
Cardiovascular disease (CVD) risk factors present before rheumatoid arthritis (RA) onset increase the risk of future cardiovascular events (CVE) in RA patients. Early assessment of these risk factors is crucial for managing cardiovascular risk in individuals with RA.
Area of Science:
- Rheumatology
- Cardiology
- Epidemiology
Background:
- Rheumatoid arthritis (RA) significantly increases comorbidity and mortality, primarily due to cardiovascular disease (CVD).
- Pre-RA individuals exhibit higher frequencies of CVD risk factors like elevated BMI, ApoB:A1 ratio, and smoking compared to controls.
- Understanding the impact of pre-existing risk factors is vital for early intervention in RA patients.
Purpose of the Study:
- To evaluate the influence of traditional cardiovascular risk factors identified before RA onset on the risk of cardiovascular events (CVE) post-diagnosis.
- To compare the risk of CVE in pre-RA individuals with traditional risk factors against matched controls.
Main Methods:
- A case-control study involving 521 pre-symptomatic individuals and 1566 controls from the Health Surveys of the Medical Biobank.
- Assessment of CVD risk factors including hypertension, elevated ApoB:A1 ratio, BMI, diabetes, and smoking.
- Utilized Swedish National Patient Register and Cause of Death Register for comorbidity and mortality data.
Main Results:
- Pre-RA individuals demonstrated a 1.70-fold higher risk of future CVE compared to controls, persisting after adjustments (HR 1.73).
- Multiple risk factors significantly amplified CVE risk in RA patients; two factors increased risk by 2.70-fold, and three to four factors by 6.32-fold.
- Most individual risk factors were associated with CVE post-RA diagnosis.
Conclusions:
- Cardiovascular risk factors present before RA onset are linked to an increased risk of future CVE.
- Even after adjusting for risk factors and treatments, pre-RA individuals face a higher CVE risk.
- Emphasizes the critical need for early cardiovascular risk assessment in individuals with or at risk for RA.
Background:
The increased comorbidity and mortality in rheumatoid arthritis (RA) patients are largely due to cardiovascular disease (CVD). Previously, we demonstrated increased frequencies of risk factors for CVD (elevated body mass index (BMI), elevated apoliprotein (Apo) B:ApoA1 ratio, and smoking) in pre-RA individuals compared with matched controls.
Objectives:
Assess the impact of traditional CV risk factors present before the onset of RA on the risk of CV events (CVE) after diagnosis in comparison with matched controls.
Methods:
A case-control study including 521 pre-symptomatic individuals and 1566 controls identified within the Health Surveys of the Medical Biobank was performed. CVD risk factors were hypertension, elevated ApoB:A1 ratio, BMI, diabetes, and smoking. Information on comorbidities was requested from the Swedish National Patient Register and Cause of Death Register.
Results:
Pre-RA individuals had a higher risk of future CVE compared with matched controls (HR [95% CI] 1.70 [1.31-2.21]), which remained after adjustments for risk factors for CVD (HR [95% CI] 1.73 [1.27-2.35]). Most risk factors were associated with CVE after diagnosis, and a combination resulted in a higher risk in RA compared with controls; two risk factors, HR [95% CI] 2.70 [1.19-6.13] vs. 1.26 [0.75-2.13]; and three to four risk factors, HR [95% CI] 6.32 [2.92-13.68] vs. 3.77 [2.34-6.00].
Conclusions:
Risk factors for CVD present in pre-RA individuals were associated with future CVE, and even after adjustments for these risk factors and treatments after RA onset, pre-RA individuals had a higher risk of CVE compared with controls. These findings further highlight the importance of the early assessment of risk for CVD.
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