from Section 4 - Postpartum Emergencies
Published online by Cambridge University Press: 06 May 2021
While 50% of cases of inversion of the uterus have no identifiable risk factors [5], mismanagement of the third stage (applying traction on the umbilical cord before contraction of the uterus and applying fundal pressure) is considered as the prime cause [3].Other recognised predisposing factors include uterine atony, fundal implantation of a morbidly adherent placenta, manual removal of the placenta, precipitate labour, a short umbilical cord, placenta praevia and connective tissue disorders (Marfan syndrome and Ehlers–Danlos syndrome) [3]. It has also been reported to follow sudden increases in intra-abdominal pressure such as coughing or, sneezing before contraction of uterine muscles, delivery of a baby with cord around the neck, giving birth in sitting or erect position, precipitated labour [4] and very rarely during caesarean section [1]. Even though individual risk factors do commonly occur, rarity of the condition indicates that these factors must act in unison to culminate in an inversion of the uterus.
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