On her second postpartum day, the mother of a newborn says, “The doctor says the baby has physiologic jaundice.
Even though it is supposed to be normal, I don’t understand why it occurs.” Which fact regarding physiologic jaundice should form the basis of the nurse’s response?
It is caused by an increase in neonatal metabolism.
It is related to the destruction of fetal red blood cells.
It is caused by an antigen-antibody reaction.
It is related to the immaturity of the reticuloendothelial system.
The Correct Answer is B
Physiologic jaundice is a common condition in newborns that occurs when the baby’s blood contains an excess of bilirubin, a yellow pigment produced during the normal breakdown of red blood cells.In the womb, the mother’s liver removes bilirubin for the baby, but after birth the baby’s own liver must take over this function.Because the baby has more red blood cells than an adult and their liver is still immature, they may not be able to process all the bilirubin and it may build up in their skin and eyes, causing a yellowish appearance.
Choice A is wrong because it is not an increase in neonatal metabolism that causes physiologic jaundice, but rather a decrease in hepatic metabolism of bilirubin.
Choice C is wrong because it describes a different type of jaundice called hemolytic jaundice, which occurs when there is an incompatibility between the blood types of the mother and the baby, leading to an immune reaction that destroys the baby’s red blood cells faster than they can be replaced.
Choice D is wrong because it confuses the reticuloendothelial system with the hepatic system.
The reticuloendothelial system is a network of cells and tissues that are involved in immune responses and phagocytosis (the ingestion of foreign particles or cells).
The hepatic system is the system of organs and structures that are involved in liver functions, such as bile production and detoxification.
Normal ranges for bilirubin levels in newborns are 1 to 12 mg/dL (17 to 205 micromol/L) for total bilirubin and 0.2 to 1.4 mg/dL (3 to 24 micromol/L) for direct bilirubin.
Physiologic jaundice usually peaks at 3 to 5 days after birth and resolves by 2 weeks of age.
It does not require treatment unless the bilirubin levels are very high or rising rapidly, which may indicate a more serious condition or a risk of brain damage.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The correct answer is choice D. It will be necessary for a Cesarean section when labor begins.This is because a pregnant person with herpes simplex virus (HSV) type II can pass the infection to the baby during childbirth, which can be life-threatening.A Cesarean section can lower the risk of infection by avoiding contact with the virus in the genital area.
Choice A is wrong because herpes can recur after delivery, especially if the person has a history of genital herpes before pregnancy.Choice B is wrong because weekly cultures of the herpes site are not recommended during pregnancy, as they are not reliable indicators of viral shedding or risk of transmission.Choice C is wrong because it is possible to have more than one herpes outbreak during pregnancy, especially if the person has a primary or nonprimary first-episode infection in the third trimester.
Correct Answer is A
Explanation
The correct answer is choice A. The newborn’s nostrils flare slightly during respiration.This is a sign of respiratory distress in a newborn.
Flaring nostrils indicate that the newborn is working hard to breathe and may not be getting enough oxygen.
Choice B is wrong because the newborn’s hands and feet are blue and feel cool.This is a normal finding called acrocyanosis, which occurs due to immature peripheral circulation.
It usually resolves within 24 to 48 hours after birth.
Choice C is wrong because the newborn’s eyes move randomly when his head is turned to the side.This is a normal finding called nystagmus, which occurs due to immature eye muscles and coordination.
It usually disappears by 6 months of age.
Choice D is wrong because the newborn’s tongue thrusts forward when it is lightly touched.This is a normal finding called the extrusion reflex, which helps the newborn to suck and swallow.
It usually fades by 4 months of age.
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