Impact of Comorbidity on Physical Function in Patients With Ankylosing Spondylitis and Psoriatic Arthritis Attending Rheumatology Clinics: Results From a Cross-Sectional Study.

OBJECTIVE: To evaluate the impact of comorbidities on physical function in patients with ankylosing spondylitis (AS) and psoriatic arthritis (PsA). METHODS: This was a cross-sectional analysis of the baseline visit from the Cardiovascular in Rheumatology study. Multivariate models with physical function as the dependent variable (Bath Ankylosing Spondylitis Functional Index and Health Assessment Questionnaire for AS and PsA, respectively) were performed. Independent variables were a proxy for the Charlson Comorbidity Index (CCIp; range 0-27), sociodemographic data, disease activity (erythrocyte sedimentation rate [ESR] and Bath Ankylosing Spondylitis Disease Activity Index [BASDAI] in AS; Disease Activity Score in 28 joints [DAS28] using the ESR in PsA), disease duration, radiographic damage, and treatments. Results were reported as beta coefficients, 95% confidence intervals (95% CIs), and P values. RESULTS: We included 738 patients with AS and 721 with PsA; 21% of patients had >1 comorbidity. Comorbidity burden (CCIp) was independently associated with worse adjusted physical function in patients with PsA (ß = 0.11). Also, female sex (ß = 0.14), disease duration (ß = 0.01), disease activity (DAS28-ESR; ß = 0.19), and the use of nonsteroidal antiinflammatory drugs (ß = 0.09), glucocorticoids (ß = 0.11), and biologics (ß = 0.15) were associated with worse function in patients with PsA. A higher education level was associated with less disability (ß = -0.14). In patients with AS, age (ß = 0.03), disease activity (BASDAI; ß = 0.81), radiographic damage (ß = 0.61), and the use of biologics (ß = 0.51) were independently associated with worse function on multivariate analyses, but CCIp was not. CONCLUSION: The presence of comorbidities in patients with PsA is independently associated with worse physical function. The detection and control of the comorbidities may yield an integral management of the disease.

Pulmonary Arterial Hypertension in Systemic Lupus Erythematosus: Prevalence and Predictors.

OBJECTIVE: Pulmonary arterial hypertension (PAH) prevalence has been reported to be between 0.5% and 17% in systemic lupus erythematosus (SLE). This study assessed PAH prevalence and predictors in an SLE cohort. METHODS: The Borg dyspnea scale, DLCO, N-terminal pro-brain natriuretic peptide (NT-proBNP), and Doppler echocardiographic (DE) were performed. An echocardiographic Doppler exercise test was conducted in selected patients. When DE systolic pulmonary arterial pressure was ≥ 45 mmHg or increased during exercise > 20 mmHg, a right heart catheterization was performed. Hemodynamic during exercise was measured if rest mean pulmonary arterial pressure was < 25 mmHg. RESULTS: Of the 203 patients with SLE, 152 were included. The mean age was 44.9 ± 12.3 years, and 94% were women. Three patients had known PAH. The algorithm diagnosed 1 patient with chronic thromboembolic pulmonary hypertension and 5 with exercise-induced pulmonary artery pressure increase (4 with occult left diastolic dysfunction). These patients had significantly more dyspnea, higher NT-proBNP, and lower DLCO. CONCLUSION: These data confirm the low prevalence of PAH in SLE. In our cohort, occult left ventricular diastolic dysfunction was a frequent diagnosis of unexplained dyspnea. Dyspnea, DLCO, and NT-proBNP could be predictors of pulmonary hypertension in patients with SLE.

[Treatment of ANCA-associated systemic vasculitis]. / Tratamiento de las vasculitis sistémicas asociadas a ANCA.

The treatment of systemic vasculitis has undergone important changes in recent years. Cyclophosphamide still plays a crucial role in the induction of remission in severe forms, reducing the mortality. However, its use entails a significant long-term toxicity and the accumulation of damage resulting from a sub-optimal control of the process. Strategies has been developed to limit exposure to the drug and minimize its toxicity, such as using intravenous pulses as an alternative to oral administration and a sequential strategy. Both induce remission in less severe cases and work also for the maintenance of remission; the use of alternative immunosuppressants, such as methotrexate, azathioprine or leflunomide has been advocated. In life-threatening situations, options such as plasmapheresis or intravenous inmunoglobulins are available. Biologic therapies are a promising alternative, but their use must be limited for now to refractory cases.