Research brief: Placental abnormality risk with caesareans

Women who have caesarean sections are at increased risk of developing placental abnormalities in subsequent pregnancies, say Canadian researchers. Analysis of over 5 million pregnancies showed that women who had had a caesarean had a 47 per cent increased risk of placenta praevia than those who had not had a caesarean birth. A previous caesarean section was also linked to a 40 per cent increased risk of placental abruption. Caesareans may cause scarring in the womb, which could affect placental attachment in subsequent pregnancies (BJOG 2007; 114: 609–13).

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