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ModerateObstetrics & GynaecologyPostpartum haemorrhage due to uterine atonyuk-plab-1

A 28-year-old woman, 2 hours after an uncomplicated vaginal delivery, suddenly develops heavy vaginal bleeding with clots. The uterus feels soft and boggy on palpation. Her pulse is 120 bpm and blood pressure 90/60 mmHg. What is the most likely primary cause of this postpartum haemorrhage?

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