Which type of placenta pre is this?
Type 2 placenta is a placenta in the lower segment but not covering the os. A posterior type 2, as shown in this figure, is an indication to do a caesarean section as the fetal head can compress the placenta against the sacrum when the head is entering the pelvis. This can cause fetal hypoxia.
Type 4
Type 2
Type 1
Type 3
Antepaum Haemorrhage