Prevention of Postpartum Venous Thromboembolism in Women at Intermediate Risk

This study is looking for women who have recently given birth and are considered to have a 'medium risk' of developing a blood clot. This risk is usually 3% or higher, based on a special calculation model that looks at things like if you smoke, if you're overweight, if you have certain health conditions like diabetes or pre-eclampsia, or if you had a C-section or heavy bleeding after birth. You must be over 18 years old and have given birth between 6 and 36 hours before joining the study. You also need to be able to fully understand and agree to take part.

However, there are reasons why some women cannot join. These include if you've ever had a deep vein blood clot before, if you're already taking blood thinners for your pregnancy, or if you need blood-thinning medicine for a current condition. You also can't take part if you have a medical reason that makes LMWH unsafe for you, such as certain blood problems or severe kidney issues. If you've already received more than two doses of LMWH since delivery, or if you're taking aspirin daily (100mg) or other specific anti-clotting medicines, you won't be able to join. Lastly, if you've been part of a similar study before or are currently in another study testing a treatment, you won't be eligible.

If you join this study, you would either receive a blood-thinning injection (LMWH) once a day for six weeks after your baby is born, or you would not receive any blood-thinning medication. The specific type of LMWH would be decided by you and your doctor. You would have regular check-ups, similar to the care you would usually receive after giving birth, particularly when you go for your standard 6-week post-delivery check-up to see how you are recovering. The study will mainly involve monitoring your health during this 6-week period after delivery.