Some argue that cesarean sections are safer, while others contend that vaginal delivery is better for women. Opinions on the optimal birthing method have been divided since ancient times. In truth, however, the most crucial factor is choosing the approach that best suits the individual. Seeking thorough medical consultation before delivery is also highly advisable.
Today, we'll explain what cesarean and vaginal deliveries entail, and which suits different expectant mothers, offering insights for all moms-to-be.
I. Top 10 Indications for Cesarean Delivery
Cesarean section involves incising the abdominal wall and uterus to deliver the baby.When indicated appropriately and performed promptly, it can save both mother and baby's lives while preserving the woman's normal reproductive function and ability to conceive again. However, if not done correctly, it may fail to achieve the desired outcome and cause long-term adverse effects. Therefore, careful consideration is essential before proceeding. Cesarean section is a significant surgical method of assisted delivery.
Below are situations where a cesarean section is indicated for pregnant women:
1. Fetal Distress
Fetal distress can occur at any stage of pregnancy, particularly in the later stages or following labor contractions. Causes include umbilical cord entanglement, placental insufficiency, meconium aspiration, or maternal complications such as hypertension, diabetes, or preeclampsia.
Most cases of fetal distress can be detected through fetal monitoring showing poor heart rate or ultrasound revealing abnormal fetal blood flow. If the condition does not improve after emergency medical intervention, a cesarean section should be performed promptly to deliver the baby and prevent life-threatening complications.The duration of cervical dilation varies among individuals, but primiparas typically require longer dilation than multiparas, averaging 14–16 hours. Dilation exceeding 20 hours is classified as prolonged labor. Women experiencing this condition endure significant hardship, as they have already endured prolonged labor pains before necessitating a cesarean section. This means they must endure both preoperative labor pains and postoperative pain, effectively suffering twice.
Dystocia is generally classified into three types based on abnormal labor progression: prolonged latent phase, prolonged active phase, or stalled active phase. Common causes include abnormal uterine contractions, fetal abnormalities (such as body position or presentation), or maternal pelvic abnormalities. If significant dystocia occurs yet vaginal delivery is still attempted, it may harm the fetus or mother, necessitating a cesarean section.
3. Pelvic Narrowing or Cephalopelvic Disproportion
Women with pelvic structural abnormalities—such as those with poliomyelitis, a history of pelvic fractures, extremely petite stature, or dwarfism—may require cesarean delivery due to an abnormal pelvic outlet preventing fetal passage.
Mismatch between fetal head size and pelvic cavity is relative. Even if the mother's pelvis is normal and not narrow, a cesarean section is necessary if the fetal head is too large to pass through the birth canal.
4. Malpresentation
Cesarean delivery is generally recommended for malpresentation in primiparous women. Typically, if malpresentation is confirmed at term, a scheduled cesarean can be arranged. However, if malpresentation is detected after labor begins, an emergency cesarean may be necessary.However, if the malposition is breech and the mother wishes for a vaginal delivery, various obstetric techniques may still be attempted. Yet, vaginal delivery for breech presentation carries significant risks, so the pros and cons must be thoroughly discussed with the attending physician before proceeding.
5. Multiple Pregnancies
If the mother is carrying twins with normal fetal positions, vaginal delivery may be attempted. However, for triplets or higher-order multiples, cesarean delivery is generally recommended.
Beyond the five points above, cesarean delivery is also indicated for the following five conditions:
6. Previous Cesarean Section
This is currently the most common indication for cesarean delivery in China, accounting for approximately 30% of cases. Many women who had a cesarean for their first birth will choose cesarean delivery for subsequent births.Generally, a previous cesarean section does increase the risk of uterine rupture by nearly 1%. If the incision was vertical, the risk increases approximately fourfold. Therefore, most obstetricians and expectant mothers will schedule a cesarean section before labor begins when a previous cesarean is present.
7. Placental Factors
Placental position and changes also influence delivery methods. For instance, a low-lying placenta obstructing cervical dilation, placenta previa, or premature placental abruption causing severe hemorrhage or fetal distress may necessitate cesarean delivery.
8. Previous Uterine Surgery
Similar to a prior cesarean delivery, scar tissue from surgery on the uterine wall increases the risk of uterine rupture during labor contractions. Therefore, a cesarean section is typically scheduled in such cases.
9. Maternal unsuitability for vaginal delivery
If the mother has a significant medical condition, such as preeclampsia or severe internal diseases (e.g., heart disease), and is assessed by a physician as unable to undergo vaginal delivery, a cesarean section is also necessary.
10. Fetal macrosomia
Macrosomia is defined as a fetal weight of 4 kilograms or more. If prenatal examinations indicate the fetus may exceed 4 kilograms and the likelihood of successful vaginal delivery is low, a cesarean section may be scheduled to prevent dystocia.
II. Conditions for Natural Birth
Natural birth is one method of delivery. Some believe it is far preferable to cesarean section, as it leaves the body intact without scars—a major appeal for women concerned about appearance.
Consequently, many expectant mothers still hope for a vaginal delivery, as it benefits both the baby and facilitates their own physical recovery. If you wish to have a vaginal delivery, pay attention to the following five aspects.
1. Pregnancy age between 24 and 28 years old
Expectant mothers younger than this age range may have underdeveloped bodily tissues, particularly an incompletely formed pelvis, which is less favorable for both the mother and fetus.Women over this age, as older mothers, experience stiffening of pelvic joints that resist expansion. Weaker uterine contractions and reduced vaginal elasticity can prolong labor and increase the risk of difficult delivery—a key reason many older mothers opt for cesarean sections.
2.Maintain balanced nutrition and manage weight during pregnancy
While expectant mothers prioritize dietary nutrition during pregnancy, failing to control weight gain can lead to excessive nutrient intake and fat consumption. This may cause the fetus to grow too large, preventing smooth passage through the birth canal and necessitating surgical intervention.
3. Engage in regular exercise
Moderate exercise not only aids in managing pregnancy weight but also facilitates natural childbirth by shortening labor duration and reducing the risk of complications.Regularly active expectant mothers typically maintain physical fitness and cardiovascular function at a certain level. Women with good physical fitness have higher tolerance and better endurance for labor pains. Therefore, female athletes experience significantly fewer complications during childbirth than the average pregnant woman. Expectant mothers can maintain their usual exercise habits, as long as they avoid strenuous activities.
4. Build Confidence in Natural Birth
Expectant mothers planning a natural birth should prepare mentally in advance. Read relevant books to understand the process and coping strategies. Maintain emotional stability. Once contractions begin, actively cooperate with medical staff. Trust that with the support of doctors and midwives, you will safely and smoothly navigate labor to welcome your baby.
5. Attend Prenatal Checkups Regularly
Scheduled prenatal visits enable early detection of issues, allowing timely correction and treatment. For instance, if fetal malposition occurs, methods like the knee-chest position can be adopted under medical guidance to correct it, thereby not affecting natural childbirth.