Difficult to treat rheumatoid arthritis in a comprehensive evaluation program: frequency according to different objective evaluations.

Difficult-to-treat Rheumatoid Arthritis (RA-D2T) is a condition in which patients do not achieve the treatment target despite multiple advanced therapies, more others features. Aims: to estimate the frequency of RA-D2T in a cohort comprehensively evaluated (clinical, serology, imaging), and to analyze the associated characteristics. In a second part, the frequency of RA-D2T after 1 year of follow-up, analyzing the predictive variables at baseline and therapeutic behavior.

Ultrasound tenosynovitis: A differential feature of patients with seronegative rheumatoid arthritis.

Objective: To identify differential features between patients with seropositive and seronegative rheumatoid arthritis (RA).

Method: Prospective cohort study, including patients who were admitted for polyarthralgia. At baseline was performed: laboratory studies, X-rays of hands and feet, ultrasound of both hands with power Doppler technique, clinical data and clinimetry.

"Reuma-Check": Performance of a Comprehensive Fast-Track Program for the Diagnosis of Axial Spondyloarthritis in South America.

Objectives: The aim of this study was to evaluate the performance of a comprehensive diagnosis program called "Reuma-check" for the diagnosis of axial spondyloarthritis (SpA) in patients with low back pain (LBP).

Methods: This is a cross-sectional study. Patients with LBP aged 18 years or older were preselected, and those with at least 1 SpA feature completed the circuit.

EULAR definition of "arthralgia suspicious for progression to rheumatoid arthritis" in a large cohort of patients included in a program for rapid diagnosis: role of auto-antibodies and ultrasound.

Objectives: To evaluate the performance of the European League Against Rheumatism (EULAR) definition of arthralgias suspicious for progression to RA in patients with hand arthralgias and to estimate the added value of both auto-antibodies and ultrasound (US) with power Doppler (PD).

Methods: Consecutive patients admitted for hand arthralgias to "Reuma-check" ® program were included. This program includes the following at baseline: clinical assessment, laboratory tests, US with PD of both hands, and radiography of both hands and feet.