A C-section requires some preparation that isn’t necessary with a vaginal birth. The woman undergoing the procedure will need an IV for antibiotics and fluids and may also require general anesthesia from an anesthesiologist.
With a vaginal birth, a woman might receive an epidural, which is a regional anesthesia that will reduce pain during vaginal birth, but she won’t undergo general anesthesia unless the doctor determines that an emergency C-section is required because of maternal or fetal distress.