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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Federico Foundation
Nucleo de Apoio a Pesquisa Saude da Crianca e do Adolescente da USP (NAP-CriAd)
Objective: To evaluate prevalence, clinical manifestations, laboratory abnormalities and treatment in a multicenter cohort study including 847 childhood-onset systemic lupus erythematosus (cSLE) patients with and without diffuse alveolar hemorrhage (DAH), as well as concomitant parameters of severity. Methods: DAH was defined as the presence of at least three respiratory symptoms/signs associated with diffuse interstitial/alveolar infiltrates on chest x-ray or high-resolution computer tomography and sudden drop in hemoglobin levels. Statistical analysis was performed using Bonferroni correction (p<0.0022). Results: DAH was observed in 19/847 (2.2%) cSLE patients. Cough/dyspnea/tachycardia/hypoxemia occurred in all cSLE patients with DAH. Concomitant parameters of severity observed were: mechanical ventilation in 14/19 (74%), hemoptysis 12/19 (63%), macrophage activation syndrome 2/19 (10%) and death 9/19 (47%). Further analysis of cSLE patients at DAH diagnosis compared to 76 cSLE control patients without DAH with same disease duration [3 (1-151) vs. 4 (1-151) months, p = 0.335], showed higher frequencies of constitutional involvement (74% vs. 10%, p < 0.0001), serositis (63% vs. 6%, p < 0.0001) and sepsis (53% vs. 9%, p < 0.0001) in the DAH group. The median of disease activity score(SLEDAI-2 K) was significantly higher in cSLE patients with DAH [18 (5-40) vs. 6 (0-44), p < 0.0001]. The frequencies of thrombocytopenia (53% vs. 12%, p < 0.0001), intravenous methylprednisolone (95% vs. 16%, p < 0.0001) and intravenous cyclophosphamide (47% vs. 8%, p < 0.0001) were also significantly higher in DAH patients. Conclusions: This was the first study to demonstrate that DAH, although not a disease activity score descriptor, occurred in the context of significant moderate/severe cSLE flare. Importantly, we identified that this condition was associated with serious disease flare complicated by sepsis with high mortality rate.
Univ Sao Paulo FMUSP, Fac Med, Pediat Rheumatol Unit, Childrens Inst, Av Dr Eneas Carvalho Aguiar 647, BR-05403000 Sao Paulo, SP, Brazil
FMUSP, Childrens Inst, Pediat Pulmonol Unit, Av Dr Eneas Carvalho Aguiar 647, BR-05403000 Sao Paulo, SP, Brazil
FMUSP, Div Rheumatol, Sao Paulo, Brazil
Univ Fed Sao Paulo, Pediat Rheumatol Unit, Sao Paulo, Brazil
Sao Paulo State Univ UNESP, Fac Med Botucatu, Sao Paulo, Brazil
Sao Paulo State Univ Campinas, UNICAMP, Sao Paulo, Brazil
Irmandade Santa Casa de Misericordia Sao Paulo, Sao Paulo, Brazil
Univ Sao Paulo, Ribeirao Preto Med Sch, Sao Paulo, Brazil
Hosp Darcy Vargas, Sao Paulo, Brazil
Hosp Menino Jesus, Sao Paulo, Brazil
Pontifical Catholic Univ Sorocaba, Sao Paulo, Brazil
Sao Paulo State Univ UNESP, Fac Med Botucatu, Sao Paulo, Brazil
Sao Paulo State Univ Campinas, UNICAMP, Sao Paulo, Brazil
CNPq: 301805/2013-0
CNPq: 303752/2015-7
CNPq: 301479/2015-1
CNPq: 305068/2014-8
CNPq: 303422/2015-7
