Diagnosis and management of postpartum haemorrhage.

#### What you need to know Postpartum haemorrhage is a major cause of death during pregnancy and early motherhood, accounting for 25% of maternal deaths worldwide,1 and is the second leading direct cause of maternal deaths in the UK.2 It is defined as blood loss of more than 500 mL from the female genital tract after delivery of the fetus (or >1000 mL after a caesarean section). Primary postpartum haemorrhage occurs within the first 24 hours of delivery, whereas secondary postpartum haemorrhage occurs between 24 hours and 12 weeks after delivery and is less common.1 For every maternal death due to postpartum haemorrhage, there are at least 10 “near-misses.” Serious maternal morbidities include multiorgan failure, multiple blood transfusion, and peripartum hysterectomy.1 There have been recent advances in the management of postpartum haemorrhage secondary to coagulopathy and abnormal invasion of the placenta.3 This review highlights the causes, diagnosis, and management of postpartum haemorrhage and is aimed at those involved in obstetric and postnatal care. #### Sources and selection criteria We searched PubMed using the key words “postpartum haemorrhage,” “balloon tamponade,” “uterine compression suture,” “embolization,” and “obstetric haemorrhage” from 1981 to 2016. We also considered review articles from 2001 to 2016 …