Caesarean section, also known as C-section or Caesarean delivery, is the use of surgery to deliver one or more babies. A Caesarean section is often performed when a vaginal delivery would put the baby or mother at risk. This may include obstructed labor, twin pregnancy, high blood pressure in the mother, breech birth, problems with the placenta, umbilical cord or shape of the pelvis, and previous C-section.The World Health Organization recommends that they should be done based on medical need and in many cases they are lifesaving for the mother and baby.