The primary objective was to determine the impact of sharing musculoskeletal ultrasound (MUS) results with rheumatologists on worsening patient-reported outcomes (PROs) at 6 months of follow-up in rheumatoid arthritis (RA) patients with clinical remission. Secondary objectives were to describe MUS findings and to compare the proportion of patients with flares, according to the DAS28-ESR, following the intervention.
Ninety-four consecutive outpatients with clinical remission had PROs and a treatment proposal recorded at study entry. MUS was then performed by trained specialists who were blinded to clinical assessments. Forty-seven patients were randomised (1:1) to either the intervention group (MUS data shared with the primary rheumatologist) or the control group (data not shared); changes in the treatment proposal were recorded. PROs worsening and the proportion of patients with ares were compared between both groups at 6±2 months of follow-up. The study received IRB approval. Appropriate statistics were used.
At baseline, patients from the intervention and control groups had similar characteristics; 43 and 41 patients, respectively, completed the 6-month follow-up period. PROs worsening at 6 months of follow-up were similar between groups, as were the DAS28-ESR and the proportion of patients who flared. In general, MUS findings were in accordance with the clinical remission status, although power Doppler synovitis was detected in up to 37% of the patients. RA-related treatment was increased in all the patients from the intervention group with discordant findings between clinical and MUS assessments.
The addition of MUS to clinical evaluation of RA outpatients in remission did not prevent worsening PROs at 6 months.