Adapted from the paper by Yao et al 6. However, contact your baby's doctor if the umbilical area oozes pus, the surrounding skin becomes red and swollen, or the area develops a pink moist bump. Skip to main content.
What happens after the baby is born? Conversely, the fetal heart pumps low oxygen containing blood, nutrient-depleted blood through the umbilical arteries back to the placenta. Even if the blood vessels do not tear, the baby may suffer from lack of oxygen due to pressure on the blood vessels.