Natural delivery is suitable for medium-sized fetuses. Under normal uterine contractility, the fetus can be born smoothly after passing through the birth canal with appropriate size of the mother. Vaginal delivery requires only a small amount of local anesthesia, rapid recovery after delivery and short hospitalization time. Caesarean section requires complicated anesthesia, and there are chances of bleeding and postoperative complications, which will cause mental and physical trauma to pregnant women.

(A) the advantages and disadvantages of natural childbirth

Advantages: quick recovery after delivery, eating immediately after delivery, only perineal wound, less complications.

Disadvantages: Prenatal labor pains, vaginal relaxation, sequelae of uterine and bladder prolapse, perineal injury and even infection, vulvar hematoma, etc. Poor uterine contraction can lead to postpartum hemorrhage. If postpartum hemorrhage is not controlled, emergency laparotomy is needed, and in severe cases, the uterus needs to be removed, even life-threatening. Postpartum infection or puerperal fever, especially those with early water breakthrough and prolonged labor process, will lead to urgent labor (labor process is less than two hours). Especially for parturient and patients with cervical laxity, if dystocia occurs or the parturient is exhausted and needs forceps or vacuum suction to assist delivery, fetal head swelling will occur. Overweight fetus is easy to cause shoulder dystocia, leading to clavicle fracture or brachial plexus injury in newborns. Meconium is produced in amniotic fluid, which leads to meconium aspiration syndrome in newborns. The fetus has an accident in the uterus, such as umbilical cord around the neck, knotting or prolapse. Amniotic fluid embolism occurs without warning.

(2) Advantages and disadvantages of caesarean section

Advantages: it can avoid unexpected situations in the natural production process, and the vagina is not easily damaged.

Disadvantages: excessive bleeding. There are many complications, including wound infection, abdominal organ adhesion, anesthesia sequelae and so on. Postpartum recovery is slow. The hospitalization time is longer.

(3) the choice of caesarean section

We can consider both the mother and the fetus and decide whether to choose caesarean section.

1. Maternal aspect: pelvic stenosis or pelvic tumor, blocking the birth canal. Prenatal bleeding is placenta previa or placental abruption. 35-year-old primipara delayed delivery. Maternal reproductive tract infection. Problems during childbirth, such as uterine rupture. Prenatal caesarean section. Bad obstetrical history.

2. Fetus: the fetal position is not correct. The estimated fetal weight is more than 4000g or less than1500g. Fetal distress, fetal heart sound change or fetal hypoxia, meconium, multiple pregnancy, fetal malformation, umbilical cord prolapse.

In a word, the mortality and morbidity of mother and fetus are higher than that of caesarean section vaginal delivery. It is the principle to find problems in time during prenatal examination, cooperate closely with doctors and adopt appropriate production methods to achieve the safety of mother and child.