Key clinical point: Current use of oral glucocorticoids significantly increased the risk for Staphylococcus aureus bacteremia (SAB) in a dose-dependent manner in patients with rheumatoid arthritis (RA), but the absolute risk was low with biological disease-modifying antirheumatic drug (bDMARD) use.
Major finding: Relative risk for SAB was 2.2-fold (adjusted odds ratio [aOR] 2.2; 95% CI 1.3-4.0) and 9.5-fold (aOR 9.5; 95% CI 3.9-22.7) higher with current use of ≤7.5 and >7.5 mg/day prednisolone-equivalent oral glucocorticoids, respectively. The number needed to harm was approximately 10 times higher with the current use of bDMARD vs >7.5 mg/day oral glucocorticoids (1172 vs 110).
Study details: This nested case-control study included 180 patients with first-time SAB who received glucocorticoids or bDMARD and 720 age- and sex-matched control individuals from a cohort of 30,479 patients with RA.
Disclosures: This study was supported by The Danish Rheumatism Association (TDRA) and Beckett-Fonden. Several authors reported ties with various sources, including TDRA and Beckett-Fonden.
Source: Dieperink SS et al. Antirheumatic treatment, disease activity and risk of Staphylococcus aureus bacteraemia in rheumatoid arthritis: A nationwide nested case-control study. RMD Open . 2022;8(2):e002636 (Dec 14). Doi: 10.1136/rmdopen-2022-002636