Association between ischemic heart disease and systemic lupus erythematosus-a large case-control study

Area of Science:

• Rheumatology
• Cardiology
• Epidemiology

Background:

• Ischemic heart disease (IHD) is a leading cause of mortality in patients with systemic lupus erythematosus (SLE).
• Accelerated premature atherosclerosis is a key factor contributing to increased IHD risk in SLE patients.
• Understanding the comorbidity burden of IHD in SLE is crucial for patient management.

Purpose of the Study:

• To investigate the proportion of comorbid IHD among SLE patients using a large, national real-life database.
• To compare the prevalence of IHD in SLE patients versus age- and sex-matched controls.
• To determine if SLE is an independent risk factor for IHD.

Main Methods:

• A case-control study was conducted using data from Clalit Health Services, a large Israeli HMO.
• 5018 SLE patients were compared with 25090 age- and sex-matched controls.
• Univariate analysis (Chi-square, t-tests) and multivariate logistic regression were employed.

Main Results:

• The prevalence of IHD was significantly higher in SLE patients (11.3%) compared to controls (3.1%) (P < 0.001).
• SLE was independently associated with IHD (OR 3.77, 95% CI 3.34-4.26).
• The risk of IHD in SLE was notably higher in females and showed no significant difference across socioeconomic strata.

Conclusions:

• Systemic lupus erythematosus patients exhibit a high prevalence of ischemic heart disease.
• SLE is confirmed as an independent risk factor for IHD.
• The increased risk of IHD in SLE patients, particularly females, warrants focused cardiovascular risk assessment and management strategies.