A nurse is collecting data from a newborn immediately after delivery by a client who was at 42 weeks of gestation. Which of the following findings should the nurse expect?

Choice A reason:

Moro is a newborn reflex that occurs when the baby is startled by a loud sound or movement. The baby will cry, throw back his or her head, and then pull his or her limbs into the body. This reflex lasts until the baby is about 2 months old.

Choice B reason:

Rooting is a newborn reflex that starts when the corner of the baby's mouth is stroked or touched. The baby will turn his or her head and open his or her mouth to follow and root in the direction of the stroking. This helps the baby find the breast or bottle to start feeding. This reflex lasts about 4 months.

Choice C reason:

Gag is a newborn reflex that prevents the baby from choking on foreign objects. The baby will cough, gag or spit out anything that touches the back of the throat or the roof of the mouth. This reflex is present throughout life.

Choice D reason:

Running is not a newborn reflex. It is a voluntary movement that develops later in childhood. Choice E reason:

Babinski is a newborn reflex that occurs when the sole of the foot is stroked from heel to toe. The baby will fan out and curl up the toes and twist the foot inward. This reflex lasts until the baby is about 12 months old.

Choice F reason:

Stepping is a newborn reflex that occurs when the baby is held upright with his or her feet touching a solid surface. The baby will appear to take steps or dance. This reflex lasts about 2 months.

Choice G reason:

The crawling reflex is a developmental milestone observed in infants around 6-8 months of age. It involves the baby moving on their hands and knees, often starting with a belly-crawling motion. Unlike newborn reflexes, this skill is learned and requires muscle coordination and strength.

Choice H reason:

Standing with support is a developmental milestone typically achieved by infants around 9-12 months. In this skill, the baby pulls themselves up to a standing position while holding onto furniture or a caregiver’s hands. It is a learned behavior reflecting increased muscle strength and balance, distinct from newborn reflexes.

Choice I reason:

The pincer grasp is a fine motor skill that usually develops between 8-12 months. It involves the baby using the thumb and index finger to pick up small objects. This ability is not a reflex but a learned skill that demonstrates improved hand-eye coordination and dexterity.

Choice A reason:

Infection is not prevented by vitamin K administration. Vitamin K is needed for blood clotting, not for fighting infections. Newborns are given vitamin K injections to prevent a serious disease called hemorrhagic disease of the newborn (HDN), which is caused by bleeding in the brain or other organs.

Choice B reason:

Hyperbilirubinemia is not prevented by vitamin K administration. Hyperbilirubinemia is a condition in which there is too much bilirubin in the blood, causing jaundice. Bilirubin is a yellow pigment that is produced when red blood cells break down. Vitamin K does not affect the production or breakdown of bilirubin.

Choice C reason:

Bleeding is prevented by vitamin K administration. Vitamin K is needed for the synthesis of several clotting factors that help stop bleeding when there is an injury. Newborns have very low levels of vitamin K in their bodies because they do not get enough from the placenta or breast milk, and they do not have enough bacteria in their intestines to produce it. This puts them at risk for VKDB, which can cause life-threatening bleeding in the brain or other organs.

Choice D reason:

Potassium deficiency is not prevented by vitamin K administration. Potassium is an electrolyte that is important for nerve and muscle function, as well as fluid balance. Vitamin K does not affect the absorption or excretion of potassium.