A 27-year-old woman has had three consecutive first-trimester miscarriages. Testing shows lupus anticoagulant positivity on two occasions 12 weeks apart. She is now planning her next pregnancy. What is the recommended treatment to improve live birth rates?
- A Low-dose aspirin alone from conception
- B Therapeutic dose unfractionated heparin infusion from the first trimester
- C Oral prednisolone throughout pregnancy
- D Prophylactic low molecular weight heparin plus low-dose aspirin ✓
Explanation
Antiphospholipid syndrome is the best-defined treatable cause of recurrent pregnancy loss. The combination of prophylactic or intermediate dose low molecular weight heparin with low-dose aspirin, started in early pregnancy, roughly doubles the chance of a live birth compared with no treatment. Aspirin alone is inferior, corticosteroids add maternal morbidity without benefit, and full therapeutic anticoagulation increases bleeding risk without improving outcomes.
Reference: Williams Obstetrics, 26th ed.
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