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Demographic and clinical characteristics of patients with ANCA-positive vasculitis in a Colombian University Hospital over a 12-year period: 2005–2017

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Vasculitides associated with anti-neutrophil cytoplasmic antibodies are heterogeneous, systemic, low prevalence and high morbidity and mortality entities. They include granulomatosis with polyangiitis, microscopic polyangiitis and eosinophilic granulomatosis with polyangiitis. In Latin America, there are few descriptive registries of these patients. The objective of the study was to describe the demographic and clinical characteristics and in-hospital morbidity and mortality of patients with vasculitis associated with anti-neutrophil cytoplasmic antibodies in a university hospital in Colombia. This was a cross-sectional descriptive study. We performed computer searches with terms related to patients with anti-neutrophil cytoplasmic antibody-associated vasculitis, between 2005 and 2017 who met the American College of Rheumatology classification criteria for vasculitis associated with anti-neutrophil cytoplasmic antibodies, and their clinical and laboratory characteristics. One hundred and six patients with anti-neutrophil cytoplasmic antibody-associated vasculitis were included in the study. The average age was 55 years, and 57.5% were women. In 68.8% of the cases, the diagnosis was made during hospitalization, with an average hospital stay of 16.6 days (± 12.22). The distribution by type of vasculitis was: granulomatosis with polyangiitis 52%, microscopic polyangiitis 45.2% and eosinophilic granulomatosis with polyangiitis 1.8%. Alveolar hemorrhage occurred in 35% of patients; 20.7% had variable renal involvement, of which 53.8% progressed to advanced kidney disease. Treatment included glucocorticoids 91.5%, cyclophosphamide 62.2%, plasmapheresis 14.1%, and 41.5% required renal replacement therapy. In-hospital mortality was 16.5%, Sepsis was the most common cause of death. We present clinical information on a group of patients with anti-neutrophil cytoplasmic antibody-associated vasculitis; renal involvement was the the most common type of affectation. Both the clinical and serological characteristics of our registry were similar to those described in other Latin American and European cohorts, and a lower in-hospital mortality rate was evidenced.

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The authors scknowledge the San Ignacio University Hospital and the Pontificia Universidad Javeriana

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Correspondence to Julián Rondón-Carvajal.

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Daniel G. Fernández-Ávila is the first author.

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Fernández-Ávila, D.G., Rondón-Carvajal, J., Villota-Eraso, C. et al. Demographic and clinical characteristics of patients with ANCA-positive vasculitis in a Colombian University Hospital over a 12-year period: 2005–2017. Rheumatol Int 40, 1283–1290 (2020).

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