When fetal malposition is detected, the doctor will discuss with the expectant mother the best delivery method. If adjustments result in the fetus turning to a cephalic presentation, vaginal delivery is the preferred option. If the position cannot be corrected, a cesarean section may be the safer delivery method. The doctor will analyze the pros and cons, allowing the mother, family, and medical team to make a joint decision.
Is Cesarean Section the Only Option for Malpresentation? (Public Health Network)
Is Cesarean Section the Only Option for Malpresentation?
Breech Presentation and Vaginal Delivery vs. Cesarean Section
Vaginal Delivery
When the fetus is in a breech position, vaginal delivery carries increased risks. Compared to other parts of the fetus, the head is the largest and hardest. In a cephalic presentation, the head emerges first,allowing the rest of the body to follow through the birth canal. In a breech presentation, the buttocks emerge first. Since the fetal body cannot sufficiently dilate the cervix to allow the head to pass, delivery of the head becomes significantly more difficult.
Another risk of vaginal delivery with a breech presentation is cord prolapse. The increased space during breech delivery allows the umbilical cord to slip out more easily. Once prolapsed, the cord can become compressed, obstructing blood flow and potentially causing fetal hypoxia and death.
Cesarean Delivery
Most breech babies are delivered via planned cesarean section. Like any surgery, cesarean delivery carries potential complications. While these occur in a minority of cases and are generally manageable—such as wound infection, surgical bleeding, or postoperative pain—they are still risks.However, not every cesarean can be planned in advance. If the baby turns into a breech position just before delivery, the need for a cesarean becomes apparent only during labor.
Most breech babies are born healthy and safe. If your baby remains in an abnormal position close to your due date, discuss this with your doctor. Together, you will determine the most appropriate delivery method.
When a Cesarean Section is Unavoidable
Regardless, physicians follow specific criteria when deciding whether to perform a cesarean section. These generally include the following situations:
Maternal factors: Abnormalities in the birth canal, such as a narrow or malformed pelvis, or a mismatch between pelvic dimensions and fetal head size; threatened uterine rupture; severe pregnancy complications, such as heart disease, diabetes, or chronic nephritis;Severe preeclampsia; ineffective uterine contractions during labor despite oxytocin administration; severe antepartum hemorrhage (e.g., placenta previa, placental abruption); prolonged labor (exceeding 30 hours); advanced maternal age for primiparas (over 35 years); acute herpes or vaginal sexually transmitted infections in the mother.
For pregnant women with indications for cesarean section, the procedure not only reduces suffering but also prevents life-threatening complications.
However, cesarean delivery carries numerous adverse effects. First, compared to vaginal delivery, it results in greater blood loss, slower postoperative recovery, and reduced postpartum milk production. Second, postoperative complications may include urinary, cardiovascular, and respiratory syndromes, as well as various reproductive organ disorders such as poor uterine incision healing or endometriosis. Third, it may adversely affect subsequent deliveries.
For the fetus, cesarean section is indeed an effective means to save the life of the infant in critical situations. In contemporary times, advances in surgical and anesthetic techniques, improvements in blood transfusion safety, and the development and application of antibiotics have significantly enhanced the safety profile of cesarean delivery, making it a reliable method to ensure the safe birth of the fetus.
Abnormal fetal positions, such as transverse or breech presentation, especially when the foot enters the pelvis first, or persistent occipital posterior position;Dystocia, where the fetus cannot be delivered vaginally; premature placental abruption or umbilical cord prolapse before fetal delivery; fetal distress or hypoxia unresponsive to treatment; other conditions unsuitable for natural birth.
However, cesarean delivery also carries several disadvantages for newborns.First, studies indicate that infants delivered vaginally have IgG levels comparable to their mothers, whereas newborns from cesarean sections lack IgG in their umbilical cord blood. IgG is the primary immunoglobulin in human serum and the only antibody transferred from mother to newborn via the placenta. Newborns delivered by cesarean section, lacking IgG, inevitably have reduced immune resistance, increasing their susceptibility to illness.
Additionally, cesarean-delivered infants are more prone to respiratory distress syndrome. While in the womb, amniotic fluid fills the fetal lungs. During vaginal delivery, this fluid is expelled from the respiratory tract through compression. In cesarean delivery, the fetus is extracted within seconds without this compression, causing amniotic fluid to remain trapped in the lungs and airways.This can cause breathing difficulties in newborns and lead to more severe consequences.
Caution: Be Vigilant About Cesarean Section "Aftereffects"
1. Increased Risk of Pulmonary Embolism
Women who deliver vaginally can typically walk the day after birth.However, some cesarean mothers fear incision pain and remain immobile for a week postpartum, which is highly dangerous and increases risk of pulmonary embolism. Recent clinical cases of this condition are rising. Ji Xianghong explains that maternal blood viscosity naturally increases before and after delivery, slowing blood flow. If mothers remain inactive postpartum and consume greasy foods, deep vein thrombosis is likely to form. If these clots detach, they can cause pulmonary embolism.
Special Warning: Post-C-section patients must engage in physical activity to prevent this condition.
2. Risks of Cesarean Scar Pregnancy
Recently, Lidu Eastern Hospital admitted a patient with cesarean scar pregnancy who required emergency intervention to stabilize her condition. Clinically, the incidence of this condition is rising. The risks associated with this surgery are comparable to those of ectopic pregnancy.
Cesarean scar pregnancy occurs when a woman conceives within one to two years after a cesarean section. The gestational sac may implant within the scar tissue. If miscarriage occurs, severe hemorrhage is likely. Even if the pregnancy is carried to term, it poses a significant risk to the fetus's life.
Special Warning: Women who have undergone a cesarean section must use reliable contraception for at least two years to prevent this condition.
3. Cesarean section should only be chosen as a last resort
Historically, cesarean sections were performed only when vaginal delivery was impossible. Today, the situation is vastly different, with many women opting for cesarean delivery even when vaginal birth is feasible.Despite advances in medical technology improving surgical safety, risks like anesthesia complications and amniotic fluid embolism persist. Neonatal aspiration pneumonia occurs at a relatively high rate, and postpartum hemorrhage or pelvic adhesions may also develop. Recovery after cesarean delivery is generally slower. Thus, vaginal birth remains the natural and optimal delivery method.