Hi Linda,
The lupus anticoagulants usually interfere with blood clotting and are also factors for thrombosis. Patients with a lupus anticoagulant are prone to excess bleeding, repeated miscarriages, thrombosis and strokes. Patients with a lupus anticoagulant that presents atleast twice and a history of thrombosis should be given indefinite treatment with anticoagulants. Thrombosis can be prevented with heparin administration and treated with heparin and warfarin.