Dear Tracey, thank you for your question. Anticardiolipin antibodies are the result of an autoimmune disorder where your body makes antibodies against its own tissues. Patients with this disorder are prone to developing venous and arterial clots because the blood coagulation system is altered by the antibodies that are produced. During pregnancy, the fetal tissue is considered "foreign" to the mother's immune system, but special chemicals and proteins in the placenta prevent the mother from "rejecting" the fetus. However, these chemicals cannot prevent clots from developing in the placental blood vessels from the anticardiolipin antibodies. These placental clots are what cause the miscarriages. Blood thinners can be used during pregnancy to prevent clots, but coumadin (the commonly used oral blood thinner) is harmful to the fetus so subcutaneous heparin injections are the only other alternative. These injections are like insulin injections and are not too painful. Whether you are at risk of death from this disorder is hard to determine, but most patients with anticardiolipin antibodies are chronically treated with blood thinners to prevent clots from developing. I suggest that you see a hematologist who specializes in treating coagulation disorders (an academic, tertiary medical center would be a good place to start) to start with. Then, if you are planning another pregnancy, you would need to see an obstetrician who specializes in high-risk pregnancies before you become pregnant.
I hope you find this information useful. Information provided in the heart forum is for general purposes only. Only your physician can provided specific diagnoses and therapies. Please feel free to write back with additional questions.