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Kidney Int. 1998 Jun;53(6):1755-9.

Renal involvement in Henoch-Schönlein purpura: a multivariate analysis of prognostic factors.

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1
Department of Nephrology, Fukuoka Children's Hospital, Japan. y_kaku@ari.bekkoame.or.jp

Abstract

This study is the first report in which the relationship between the progression of renal involvement in Henoch-Schönlein purpura (HSP) and various factors was evaluated using a multivariate analysis. Sixty-five (33.5%) of 194 patients with HSP developed renal involvement from three days to 17 months after the onset of the disease. The plasma coagulation factor XIII (F XIII) activity of 97 patients was examined, and 51 (54.3%) of them showed a decreased activity. A univariate analysis showed that an age at the onset of more than seven years, persistent purpura and a decreased F XIII activity all increased the risk of developing renal involvement. A Cox regression model analysis indicated severe abdominal symptoms, persistent purpura and decreased F XIII activity to be significant risk factors and their hazard ratios were 3.26, 11.53 and 2.27, respectively. Corticosteroid treatment had a hazard ratio of 0.36 and was considered to decrease the risk of developing renal involvement. Based on these findings, patients who have the risk factors for renal involvement should be treated with corticosteroids at the onset of the disease to prevent developing renal involvement.

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