Cardiovascular Risks in Korean Patients with Gout: Analysis Using a National Health Insurance Service Database
Ki Won Moon1, Min Jung Kim2, In Ah Choi3
1Division of Rheumatology, Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon 24289, Korea.
Insights
Gout patients face higher risks of heart attack and stroke. Managing traditional cardiovascular risk factors and lowering urate levels is crucial for these individuals.
Area of Science:
- Cardiology
- Rheumatology
- Epidemiology
Background:
- Gout is linked to cardiovascular diseases, but specific risk factors in Asian populations remain unclear.
- Understanding these risks is vital for effective patient management.
Purpose of the Study:
- To investigate cardiovascular outcome risks and related factors in Korean gout patients.
- To identify specific risk factors contributing to cardiovascular disease in this demographic.
Main Methods:
- Retrospective cohort study using National Health Insurance Service data from Korea.
- Gout patients (ICD-10 code M10) were compared to matched controls.
- Cox regression analysis adjusted for confounders to determine hazard ratios for cardiovascular events.
Main Results:
- Gout patients showed significantly increased risks of ischemic heart disease (HR: 1.860), acute myocardial infarction (HR: 3.246), and cerebrovascular disease (HR: 1.552).
- Factors like older age, smoking, alcohol use, high LDL, and diabetes mellitus elevated cardiovascular risk.
- Hypouricemic agents were associated with a reduced risk of cerebrovascular diseases.
Conclusions:
- Gout is an independent risk factor for major cardiovascular outcomes.
- Comprehensive management including addressing traditional cardiovascular risk factors and urate-lowering therapy is essential for gout patients.
Abstract:
Although several epidemiologic studies have shown the association between gout and cardiovascular outcomes, specific risk factors for developing cardiovascular diseases in Asian patients with gout are undisclosed. Thus, the purpose of this study was to investigate risks of cardiovascular outcomes and its related factors in Korean patients with gout. This retrospective clinical study used sampled cohort data from the National Health Insurance Service in Korea. Patients with gout were defined as subjects enlisted with an ICD-10 code (M10). Control patients were selected by frequency matching for age, sex, and index year. Primary outcomes included ischemic heart disease (IHD), congestive heart failure, cerebrovascular disease (CVD), or transient ischemic attack. We calculated the hazard ratio (HR) using Cox regression, adjusting potential confounders including age, sex, lifestyle habits, laboratory results, and medication. We identified 3306 patients with gout and an equal number of matched controls. Multivariate Cox regression analysis showed that gout patients had increased risks of IHD (HR: 1.860, 95% CI: 1.446-2.392), acute myocardial infarction (HR: 3.246, 95% CI: 1.460-7.217), and CVD (HR: 1.552, 95% CI: 1.177-2.036). Old age, current smoking, frequent alcohol intake, high low-density lipoprotein, and diabetes mellitus increased the risk of cardiovascular outcomes, yet hypouricemic agents decreased the risk of cerebrovascular diseases. Our data corroborate that it is crucial to identify and manage traditional cardiovascular risk factors alongside lowering urate levels in patients with gout.
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