Antiphospholipid autoantibody detection is important in all patients with systemic autoimmune diseases.

Antiphospholipid (aPL) autoantibodies are uncommon in systemic autoimmune diseases (SADs). However, the European PRECISESADS study provides the opportunity to better characterize this rare association. The study was composed of 1818 patients with SADs including 453 with systemic lupus erythematosus (SLE), 359 with rheumatoid arthritis (RA), 385 with systemic sclerosis (SSc), 367 with Sjögren's syndrome (SjS), 94 with mixed connective tissue disease (MCTD), and 160 with undifferentiated connective tissue disease (UCTD). Assays used for aPL determination include the lupus anticoagulant (LAC) analysis using the dilute Russell's viper venom time (dRVVT) assay plus anti-cardiolipin (aCL) and anti-aß2GPI autoantibodies of IgG and IgM isotype. Information regarding clinical and biological characteristics of SAD patients was available. Among SAD patients, the prevalence of aPL differs significantly between two groups: SLE (57.6%) and non-SLE SADs (13.7%, p < 10-4). Next, association between aPL plus thrombosis and miscarriage were observed in both SLE and non-SLE patients. Thrombosis was best predicted in SLE patients by dRVVT (OR = 6.1; IC95:3.5-10.3) and miscarriage by aCL±ß2GPI IgG (OR = 2.5; IC95:1.2-5.2); while in non-SLE SADs the best predictors were aCL±ß2GPI IgG for thrombosis (OR = 6.6; IC95:2.4-18.4) and aCL±ß2GPI IgM for miscarriage (OR = 2.9; IC95:1.2-6.8). In the case of multiple positivity of aPL, the risk for thrombosis and miscarriage was increased. Central nervous system involvement characterized the SLE patients, in contrast to pulmonary and skin fibrosis, valve lesions, hypertension, elevated creatinemia, C4 fraction reduction, platelet reduction and inflammation that characterized the non-SLE SAD patients. Anti-PL determination remains important in SADs patients and should not be restricted to only SLE patients.

A 60-Year-Old Woman With Recurrent Hemoptysis.

CASE PRESENTATION: A 60-year-old non-smoker white woman presented with a new episode of hemoptysis. She reported recurrent hemoptoic sputum in the past month. She had no relevant medical history, except presumed resolved bacterial pneumonia 1 year ago. She denied taking immunosuppressive treatment and was not exposed to lung irritants. She had not traveled recently. General health status was good. She denied fever, dyspnea, chest pain, and extra-pulmonary symptoms.

Predictors of residual pulmonary vascular obstruction after pulmonary embolism: Results from a prospective cohort study.

BACKGROUND: We aimed to determine the prevalence of residual pulmonary vascular obstruction (RPVO) after symptomatic pulmonary embolism (PE) and to identify risk factors for RPVO. METHODS: On the basis of a prospective cohort of patients with a documented symptomatic venous thromboembolism, we included patients who had an acute PE and underwent a ventilation/perfusion lung scan at 3 to 24 months during the follow-up after PE. RPVO score was assessed for each patient. Initial pulmonary vascular obstruction at PE diagnosis was also assessed when available. Univariable and multivariable analyses were performed with preselected data to identify predictors for persistent defect defined as RPVO ≥ 5%. RESULTS: Among the 537 included patients, 278 (51.8%) had RPVO ≥ 5%, and 191 (35.6%) had RPVO ≥ 10%. In primary multivariate analysis on overall population, age ≥ 65 years (odds ratio [OR] 2.25, 95% CI, 1.45-3.52) and chronic respiratory failure (OR 3.19, 95% CI, 1.22-10.04) were independent predictors of RPVO ≥ 5%. In secondary multivariate analysis restricted to 256 patients with available initial pulmonary vascular obstruction score at index PE (IPVO), age ≥ 65 years (OR 2.78, 95% CI, 1.41-5.53), unprovoked PE (OR 2.11, 95% CI, 1.11-4.07) and IPVO ≥ 20% (OR 2.94, 95% CI, 1.68-5.20) were found to be independent risk factors for RVPO ≥5%. CONCLUSION: In this selected population of patients with an acute PE, age ≥ 65 years, unprovoked PE and IPVO ≥ 20% at PE diagnosis appeared to be risk factors for residual pulmonary vascular obstruction measured at three to 24 months.