Impact of Elevated Low-Density Lipoprotein and the Risk of Acute Coronary Syndrome in Rheumatoid Arthritis: A...

Area of Science:

• Cardiology
• Rheumatology
• Public Health

Background:

• Rheumatoid arthritis (RA) is an autoimmune disease associated with increased cardiovascular risk.
• Hyperlipidemia, characterized by elevated cholesterol levels, is a known risk factor for cardiovascular events.
• The combined impact of RA and hyperlipidemia on acute coronary syndrome (ACS) risk requires further investigation.

Purpose of the Study:

• To investigate the association between hyperlipidemia and the incidence of acute coronary syndrome (ACS) in patients diagnosed with rheumatoid arthritis (RA).
• To quantify the risk of ACS in RA patients with hyperlipidemia compared to those without.

Main Methods:

• Retrospective cohort study utilizing data from the Hospital Corporation of America database (2020-2023).
• Included 1,942 patients with RA, analyzing the primary outcome of ACS (including myocardial infarction and unstable angina) and primary exposure of hyperlipidemia (LDL > 100 mg/dL).
• Odds ratios (ORs) were calculated to determine the relationship between hyperlipidemia and ACS incidence.

Main Results:

• A total of 31 patients experienced ACS, and 463 had hyperlipidemia.
• RA patients with hyperlipidemia exhibited a significantly higher risk of developing ACS compared to RA patients without hyperlipidemia.
• The odds ratio for ACS in RA patients with hyperlipidemia was 3.88 (95% CI: 1.90-7.93, p < 0.01).

Conclusions:

• Hyperlipidemia is a significant independent risk factor for acute coronary syndrome (ACS) in patients with rheumatoid arthritis (RA).
• These findings underscore the importance of managing lipid profiles in RA patients to mitigate cardiovascular risk.
• Aggressive management of hyperlipidemia may be crucial for preventing ACS in this vulnerable population.