Cesarean section and vaginal delivery differ primarily in maternal and neonatal risks, recovery time, and long-term health outcomes.
Cesarean delivery is associated with increased short-term maternal morbidity including infection, thromboembolism, and longer hospital stays, while vaginal delivery carries higher risks of pelvic floor disorders with generally faster recovery.
Cesarean delivery increases risks of postpartum infection and thromboembolism compared to vaginal delivery.
Women undergoing planned cesarean section experience infection rates of approximately 15% versus 10% for planned vaginal delivery, with specific increases in endometritis, wound infection, urinary tract infection, and mastitis.
The risk of pulmonary embolism is also elevated (0.08% vs 0.05%).
Cesarean delivery is associated with approximately 1.5 additional days of hospital stay and requires 27 days to achieve pain- and opioid-free recovery compared to 19 days for vaginal delivery.
Planned vaginal delivery carries risks of complications during labor, including higher rates of chorioamnionitis (20.6% vs 0.6%) and postpartum hemorrhage (6.8% vs 1.1%) when labor induction is required or unplanned cesarean becomes necessary.
Vaginal delivery occurs in 75% of nulliparois individuals in the US with a term, singleton, vertex pregnancy and is associated with fewer days to pain and opioid free recovery days,19, versus 27 days and decreased infection, thromboembolism, and anesthetic complications, compared with cesarean delivery performed in the absence of any complications of labor and delivery and without maternal risk factors that may have constituted a medical indication.
Compared with pregnant individuals who undergo planned cesarean delivery, those who plan a vaginal delivery and undergo labor induction experience have higher risk of chorioamnionitis and postpartum hemorrhage due to unforeseen labor complications or unplanned cesarean delivery.
Women with cesarean delivery have approximately twice the risk of severe maternal morbidity and are five times more likely to require postpartum antibiotics.
Vaginal delivery is the leading risk factor for pelvic floor disorders, including pelvic organ prolapse and urinary incontinence.
Cesarean delivery provides substantial protection against these conditions, with reduced odds of urinary incontinence and pelvic organ prolapse compared to vaginal delivery.
Cesarean delivery increases risks in subsequent pregnancies, including miscarriage, stillbirth, placenta previa, placenta accreta, and placental abruption.
Cesarean delivery is associated with increased risks of certain complications in future pregnancies such as uterine rupture, which can lead to perinatal death or severe asphyxia, as well as increased risk of steel birth.
Multiple cesarean deliveries further increase risks of pelvic adhesions (12-46% after second cesarean, 26-75% after third) and small bowel obstruction.
Infants born by cesarean delivery face increased risks of respiratory complications and altered immune development.
With cephalic presentation, cesarean delivery increases neonatal intensive care stays of seven or more days and neonatal mortality up to hospital discharge, even after excluding cases performed for fetal distress.
Children delivered by cesarean have elevated risks of asthma up to age 12 and obesity up to age 5, along with reduced intestinal microbiome diversity.
For breech presentation, cesarean delivery provides substantial protective effects against fetal death and does not carry the same increased neonatal risks seen with cephalic presentations.
The primary short-term risk for the infant associated with cesarean delivery at 30 weeks gestation is respiratory complications, specifically transit tachypnea the newborn (2.7%) or respiratory distress syndrome 0.9%.
The intestinal, microbiome of infants, delivered by cesarean section shows substantial differences from their vaginally delivered counterparts and may explain associations between cesarean and delivery and asthma and obesity in childhood.
The primary long-term concern is the risk of abnormal placental invasion in future pregnancies.
The risk of placenta Areta spectrum is three times as high in women with a single previous cesarean section as in women with no previous cesarean section and 17 times with four previous C sections as with one previous cesarean section.