Postpartum endometritis is caused by infection by micro-organisms that travel from the genital tract. The incidence of postpartum endometritis is higher in unscheduled caesarean deliveries than in vaginal deliveries.
Possible causes of postpartum endometritis include the following:
Prolonged labour.
Infection of the chorion or chorioamnioonitis.
Bacterial vaginosis.
Diabetes.
Postpartum haemorrhage.