The placenta usually detaches from the uterine wall relatively easily, but women that encounter placenta accreta during childbirth are at great risk of haemorrhage during its removal. This commonly requires surgery to stem the bleeding and fully remove the placenta, and in severe forms can often lead to a hysterectomy or be fatal.
Placenta accreta affects approximately 1 in 2,500 pregnancies.
There are two further variants of the condition that are known by specific names and are defined by the depth of their attachment to uterine wall. Placenta increta occurs when the placenta further extends into the myometrium and happens in around 17% of all cases. Placenta percreta, the worst form of the condition and occurring in 5-7% of cases, is when the placenta penetrates the entire myometrium to the uterine serosa (invades through entire uterine wall). This variant can lead to the placenta attaching to other organs such as the rectum or bladder.
New Model Identifies Placenta Accreta: At the Annual Meeting of the Society for Obstetric Anesthesia and Perinatology
Sep 01, 2012; MONTEREY, CALIFA new model may help take the guesswork out of identifying placenta accreta before cesarean delivery, possibly...