Under what circumstances should pregnant women receive heparin injections?

Heparin may be required by pregnant women under specific circumstances, typically related to an increased risk of thrombosis or pregnancy complications. The following are some common indications: 1. Antiphospholipid syndrome: If a pregnant woman is diagnosed with antiphospholipid syndrome, she may require heparin to prevent thrombosis, as this condition increases the risk of blood clots. 2. Recurrent miscarriage: Heparin is sometimes used as an adjunct treatment for pregnant women with a history of recurrent spontaneous abortions, aiming to reduce the risk of future pregnancy loss. 3. Placental insufficiency: Heparin may be considered for improving placental blood flow and thus may be used in cases of placental insufficiency or fetal growth restriction. 4. Preeclampsia or eclampsia: Heparin can be used in the prevention or management of preeclampsia, a hypertensive disorder of pregnancy that may progress to eclampsia, endangering the health of both mother and baby. 5. Venous thromboembolism: If a pregnant woman has a personal or family history of venous thromboembolism, or if her risk of thrombosis is increased due to prolonged immobilization, surgery, or other factors, heparin may be administered to prevent clot formation. Before administering heparin, doctors will perform a comprehensive evaluation, taking into account the woman's overall health status, stage of pregnancy, and potential side effects, such as the risk of bleeding.