Newton JL et al. – Autonomic symptoms are common among patients with primary Sjögren's syndrome (PSS) and may contribute to the overall burden of symptoms and link with systemic disease activity.Methods
- Multicentre, prospective, cross–sectional study of a UK cohort of 317 patients with clinically well–characterised PSS.
- Symptoms of autonomic dysfunction were assessed using a validated instrument, the Composite Autonomic Symptom Scale (COMPASS).
- The data were compared with an age– and sex–matched cohort of 317 community controls.
- The relationships between symptoms of dysautonomia and various clinical features of PSS were analysed using regression analysis.
- COMPASS scores were significantly higher in patients with PSS than in age– and sex–matched community controls (median (IQR) 35.5 (20.9–46.0) vs 14.8 (4.4–30.2), p<0.0001).
- Nearly 55% of patients (vs 20% of community controls, p<0.0001) had a COMPASS score >32.5, a cut–off value indicative of autonomic dysfunction.
- Furthermore, the COMPASS total score correlated independently with EULAR Sjögren's Syndrome Patient Reported Index (a composite measure of the overall burden of symptoms experienced by patients with PSS) (β=0.38, p<0.001) and disease activity measured using the EULAR Sjögren's Syndrome Disease Activity Index (β=0.13, p<0.009).