How many weeks of placenta previa is better than caesarean section

Placenta previa refers to the placenta attached to the lower uterine segment, or the placenta has reached or covered the internal opening of the cervix, its position is lower than the fetal presentation. Generally, patients will be hospitalized at 36 weeks of pregnancy, but if they are asymptomatic, they can also be delivered by caesarean section at 39 weeks of pregnancy.