Prevention of Atherosclerotic Cardiovascular Disease in Rheumatoid Arthritis: Persistent Low-grade In-flammation May Be an Impediment Needing Attention

Abstract

To determine the status of ‘residual inflammatory risk’ (RIR) and ‘residual cholesterol risk’ (RCR) in patients with Rheumatoid Arthritis (RA) in remission with the aim of estimating their atheroscle-rotic cardiovascular disease (ASCVD) risk. The study included patients with RA in remission during their last two clinic visits on treatment with disease- mod-ifying anti-rheumatic drugs (DMARDs). Using the QRISK-3 calculator, participants were stratified into four risk categories for ASCVD: ‘Very high’, ‘High’, ‘Moderate’, and ‘Low’. Patients were prescribed lipid-lowering drugs targeting low-density lipoprotein cholesterol (LDL-C) levels to <50 mg/dl, <70 mg/dl, <100 mg/dl or <130 mg/dl, respectively. Those with a history of ASCVD before or during the follow-up period was excluded from the study. Multimorbidity were also recorded in all the patients. The study included 130 patients with RA in remission. The results showed that despite being in remission and taking treatment for lipid control, 81 (62%) and 91 (70%) patients still had ‘RIR’ and ‘RCR’, respectively. Hypertension, hypothyroidism, type-2 diabetes mellitus and obesity were the common multimorbidity. Persistent RIR in 62% of patients despite being in remission, could possibly be due to the current ‘liberal’ definition of RA permitting hs-CRP level up to <10 mg/l, which is five-fold higher than the recommended <2 mg/l for ASCVD prevention. Hence it may be necessary to revise the definition of ‘remission’ in RA factoring in the suggested lower level of hs-CRP. Additionally, rheumatologists might need to be more vigilant in lipid management with appropriate patient education regarding RCR.