Inversion

1. Live births, unconditional transfer to hospital and cesarean section. 2. Twin fetuses with high fetal head or horizontal position, or fetal distress requiring rapid delivery. 3. Some head abnormalities without cesarean section conditions, such as posterior posterior position, forehead position, high upright position, etc. 4. In some cases, the transverse fetus is dead and it is difficult to perform decapitation. 5. Occasionally used to deal with prolapse of the umbilical cord that fails to accept but does not have cesarean section conditions.