[Recurrent abortions and circulating anticoagulant. Relation to lupic disease: 6 cases].

Six women, aged 16 to 27 years old at the beginning of their illness suffered recurrent spontaneous abortion (two to eight episodes) and three of them had arteriolar venous thrombosis. These symptoms led to the finding of an antiprothrombinase type of circulating anticoagulant. In two cases, positive dissociated syphilitic serology was observed and all patients presented other haematological abnormalities: thrombocytopaenia and/or autoimmune haemolysis. The diagnosis of disseminated lupus erythematosis was established after an average period of 11 years (range 1 to 27 years) based on at least 4 of the ARA criteria (five out of six cases) and/or characteristic immunological abnormalities (five out of six cases). Thrombosis is more common in lupus when there are associated haematological abnormalities. It is probably directly related to the presence of circulating anticoagulant which inhibits the production and/or secretion of prostacyclin by the endothelial cells.