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EasyObstetrics & GynaecologyPrimary postpartum haemorrhage – uterine atonyuk-plab-1

A 25-year-old woman gives birth vaginally at term. Thirty minutes after delivery, she has heavy vaginal bleeding; estimated blood loss is 1200 mL. The uterus is soft and boggy on palpation. What is the most likely cause of her postpartum haemorrhage?

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