A nurse is collecting data from a client who delivered 2 hours ago. The client has moderate lochia rubra, temperature within normal limits, breasts soft, fundus firm, slightly deviated to the right, pulse rate 88/min, respiratory rate 18/min.
Which of the following actions should the nurse perform?

Sudden infant death syndrome (SIDS) is the sudden and unexplained death of an infant under one year of age. SIDS is more likely to occur when infants sleep on their stomachs or sides, or when they are propped up with pillows or other soft bedding. These positions can interfere with the infant's breathing and increase the risk of suffocation or overheating .

Choice A is incorrect because gastroesophageal reflux (GER) is a common condition in infants that causes them to spit up frequently after feeding. GER does not increase the risk of SIDS and can be managed by feeding smaller amounts, burping the infant often, and keeping them upright for a while after feeding.

Choice C is incorrect because apnea episodes are brief pauses in breathing that occur normally in infants, especially during sleep. Apnea episodes do not increase the risk of SIDS and usually resolve by six months of age.

Choice D is incorrect because sleeping for short intervals is normal for newborns, who need to feed frequently during the day and night. Sleeping for short intervals does not increase the risk of SIDS and will gradually change as the infant grows older.

The foramen ovale closes, preventing blood exchange from right to left in the heart. This is because the foramen ovale is a fetal shunt that allows blood to bypass the lungs and flow from the right atrium to the left atrium. After birth, when the baby starts to breathe air, the lungs expand and the pulmonary resistance decreases. This causes an increase in blood flow and pressure in the left atrium, which pushes the foramen ovale closed. This prevents blood from mixing between the right and left sides of the heart and allows oxygenated blood to circulate to the body¹².

Choice A is not correct because the ductus arteriosus does not expand to allow more blood to enter the lungs. The ductus arteriosus is another fetal shunt that

connects the pulmonary artery to the aorta. It allows blood to bypass the lungs and flow from the right ventricle to the aorta. After birth, when the baby starts to breathe air, the oxygen concentration in the blood increases and causes the ductus arteriosus to constrict and close. This increases blood flow to the lungs and decreases blood flow to the aorta.

Choice C is not correct because the umbilical vein that carried oxygenated blood in utero does not become the ascending aorta entering the right atrium. The umbilical vein is a fetal vessel that carries oxygenated blood from the placenta to the fetus. It connects to either the portal vein or the ductus venosus, which then drains into the inferior vena cava. After birth, when the umbilical cord is clamped and cut, the umbilical vein collapses and becomes a fibrous cord called ligamentum teres hepatis.

Choice D is not correct because the ductus venosus does not shunt oxygenated aortic blood to the lungs. The ductus venosus is another fetal vessel that connects the umbilical vein to the inferior vena cava. It allows some of the oxygenated blood from the placenta to bypass the liver and enter directly into the systemic circulation. After birth, when the umbilical cord is clamped and cut, the ductus venosus closes and becomes a fibrous cord called ligamentum venosum.