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Immunoglobulin A vasculitis (IgAV) is the most common systemic vasculitis in developmental age. The disease is most often characterized by a self-limiting course and good prognosis, but sometimes serious complications, like gastrointestinal bleeding or glomerulonephritis, may develop. The neutrophil to lymphocyte (NLR) and the platelet to lymphocyte (PLR) ratios are indicators related to clinical outcome in various inflammatory diseases. The mean platelet volume to platelet count ratio (MPR) has not been evaluated in patients with IgAV. The aim of this study was to analyze the values of the NLR, PLR and MPR in patients with an acute stage of IgAV compared to healthy children and to assess their suitability for predicting the severity of the disease. All children with IgAV hospitalized in our institution between 2012 and 2017 were reviewed retrospectively. The selected laboratory data were recorded before starting the treatment; these results allowed for NLR, PLR, and MPR calculation. The study involved 71 IgAV children. 57.7% of patients revealed signs of systemic involvement (including GT bleeding and/or glomerulonephritis) and 42.3% were nonsystemic (presenting skin and joint symptoms). 83% of patients were classified as mild and 17% as severe course of the disease. The NLR and the PLR were significantly higher in all IgAV children and in the systemic involvement group in comparison with non-systemic. The MPR was significantly lower in all IgAV group with the exception of children without systemic involvement. The NLR is a more valuable indicator than the PLR to identify patients at higher risk of systemic involvement in the course of IgAV. Clinical usefulness of the MPR requires further research.

rheumatology international

Analysis of neutrophil to lymphocyte ratio, platelet to lymphocyte ratio and mean platelet volume to platelet count ratio in children with acute stage of immunoglobulin A vasculitis and assessment of their suitability for predicting the course of the disease