Low-cost drug reduces death due to bleeding in women with post-partum hemorrhage

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Post-partum hemorrhage is the leading cause of maternal death worldwide, responsible for 100,000 deaths per year, the majority in low and middle-income countries.

Tranexamic acid – an inexpensive and widely available drug – could reduce maternal deaths among women with severe bleeding after childbirth, according to a global trial of 20,000 women in 21 countries, published in The Lancet. The study found that death due to bleeding was reduced by a third if the drug was given within 3 hours of the onset of post-partum hemorrhage.

Current WHO guidelines recommend the use of tranexamic acid in post-partum hemorrhage if uterotonics (drugs to induce contractions) fail to control the bleeding, or if the bleeding is thought to be due to trauma. The findings from the trial published today suggest that the drug should be given as soon as possible after the onset of post-partum hemorrhage, at the same time as uterotonics.

A woman with post-partum hemorrhage

“We now have important evidence that the early use of tranexamic acid can save women’s lives and ensure more children grow up with a mother. It’s safe, affordable and easy to administer, and we hope that doctors will use it as early as possible following the onset of severe bleeding after childbirth,” says Associate Professor Haleema Shakur, London School of Hygiene & Tropical Medicine (UK) who led the trial.

The WOMAN (World Maternal Antifibrinolytic) trial included over 20,000 women aged 16 or over in 193 hospitals in 21 countries, mostly in Africa and Asia. 

Women diagnosed with post-partum hemorrhage after a vaginal birth or caesarean section were randomized to receive either 1g of intravenous tranexamic acid or placebo, in addition to usual care. If bleeding continued after 30 minutes, or stopped and restarted within 24h of the first dose, a second dose was given.

Death due to bleeding was reduced in women given tranexamic acid compared to placebo (1.5% of women given tranexamic acid died of bleeding [155/10036] vs 1.9% of women given placebo [191/9985]). Tranexamic acid was particularly effective when given within 3 hours of bleeding, reducing deaths by a third (1.2% of women given tranexamic acid within 3 hours died of bleeding [89/7520] vs 1.7% [127/7408] of women given placebo).

Deaths from other causes (including pulmonary embolism, organ failure, sepsis, and eclampsia) did not differ between groups and neither did the rates of hysterectomies, and as a result, the composite primary outcome of deaths from all causes or hysterectomy was not reduced with tranexamic acid compared to placebo.

The authors explain that while hysterectomy is used as a last resort to control bleeding in high-income countries, in Africa and Asia where anemia is common and blood supplies are limited, hysterectomy is often used as an early intervention to prevent death from bleeding.

The authors note that this may have influenced the effect seen on hysterectomy. Indeed, the decision to have a hysterectomy was often made at the same time as the decision to enroll a woman in the trial. Finally, there was no difference in the rates of adverse effects in the tranexamic acid group compared to placebo. 

Professor Ian Roberts, London School of Hygiene & Tropical Medicine, who co-led the study, says: “The researchers who invented tranexamic acid more than 50 years ago hoped it would reduce deaths from postpartum hemorrhage, but they couldn’t persuade obstetricians at the time to conduct a trial. Now we finally have these results that we hope can help save women’s lives around the world.”

News Hour Correspondent

This article has been posted by a News Hour Correspondent. For queries, please contact through [email protected]
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