system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following types of placenta complicates third stage of labour and is associated with a past history of caesarean section: September 2011
assistant
The correct answer is  Ans. D: Placenta accreta Most impoant risk factors for placenta accreta are the placenta prae and prior caesarean delivery It complicates 3rd stage of labour (haemorrhage, shock, infection and rarely inversion of the uterus) Other types of placenta: Biscoidal placenta: Placenta have 2 discs Lobed placenta: Placenta divided into lobes Placenta succenturita: Small pa of placenta separated from the rest Febestrated: Placenta having a hole in centre Circumvallate: Edge of placenta is covered by circular fold of decidualis