[The clinical importance of determining the von Willebrand factor in patients with lupus nephritis].

Venous occlusion test has found out the reserve of vascular and renal endothelium in excretion of Willebrand factor in patients with inactive lupus nephritis and those with active lupus nephritis with urinary syndrome. In severe active lupus nephritis (lupus nephritis with nephrotic syndrome and rapidly progressive lupus nephritis) it was not recorded. This fact evidences intensity of immune inflammation and coagulation in the kidneys in the above forms of lupus nephritis.