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  • Title: Chronic respiratory disfunction due to diffuse alveolar hemorrhage in patients with systemic lupus erythematosus and primary vasculitis.
    Author: Pérez Aceves E, Pérez Cristóbal M, Espinola Reyna GA, Ariza Andraca R, Xibille Fridmann D, Barile Fabris LA.
    Journal: Reumatol Clin; 2013; 9(5):263-8. PubMed ID: 23727460.
    Abstract:
    BACKGROUND: Pulmonary hemorrhage (PH) occurs in 2-5% of SLE patients, and is associated with a high mortality rate (79-90%). Diagnostic criteria for this complication include: 1) Pulmonary infiltrates, with at least ¾ of lung tissue involved in a chest x ray, 2) Acute respiratory failure, 3) A decrease of 3g/dL or more in hemoglobin levels. PH might lead to organized pneumonia, collagen deposition, and pulmonary fibrosis which in time might cause changes in pulmonary function tests with either restrictive or obstructive patterns. AIM: To evaluate the existence of abnormalities in pulmonary function tests after a PH episode. METHODS: We included patients with SLE and primary vasculitis that developed PH. During the acute episode, we measured SLEDAI in SLE patients, five factor score in microscopic polyangiitis (MPA) and Birmingham Vasculitis Activity Store (BVAS) in granulomatosis with polyangiitis (GPA) (Wegener). We determined the number of PH events, treatment, and ventilator assistance requirements and correlated its association with abnormal pulmonary function tests. RESULTS: We included 10 patients, 7 with SLE, 2 with MPA and 1 with GPA (Wegener). The mean activity measures were: SLEDAI 20.4 ± 7.5, FFS 2, and BVAS 36. Treatment consisted in methylprednisolone (MPD) in 3 patients, MPD plus cyclophosphamide (CY) in 6 patients, and MPD, CY, IV immunoglobulin, and plasmapheresis in one patient. Five patients required ventilatory support. We found abnormalities in pulmonary function tests in 8 patients, three had an obstructive pattern and five a restrictive pattern; 2 patients did not show any change. We did not find a significant association with any of the studied variables. CONCLUSION: PH might cause abnormalities in pulmonary function tests and prolonged immunosuppressive treatment could be required.
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