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 C
Explanation
The correct answer is choice C: Related to the influence of maternal hormones.This is because breast milk contains many hormones that pass into it from the mother’s body, such as prolactin, thyroid hormones, and estrogen.
These hormones can affect the baby’s growth and development, and sometimes cause temporary breast enlargement and milk secretion in newborns of both sexes.This is called neonatal galactorrhea or “witch’s milk” and it is harmless and usually resolves within a few weeks
Choice A is wrong because neonatal galactorrhea is not a symptom of an endocrine disorder.It is a normal physiological response to maternal hormones that cross the placenta during pregnancy and are present in breast milk
Choice B is wrong because neonatal galactorrhea is not related to the need for chromosomal determination of gender identity.Gender identity is determined by a complex interaction of genetic, hormonal, and environmental factors, and it is not influenced by breast milk production in newborns
Choice D is wrong because neonatal galactorrhea is not a symptom of an abnormal proliferation of mammary alveoli.
Mammary alveoli are the milk-producing cells in the breast, and they are stimulated by prolactin to secrete milk.Neonatal galactorrhea does not indicate any abnormality in the structure or function of the mammary glands
Correct Answer is D
Explanation
The correct answer is choice D. Insufficient relaxation of the uterus between contractions.This is also known astachysystoleorhyperstimulation, which can cause fetal distress and uterine rupture.Oxytocin is a hormone that stimulates uterine contractions, but it can also cause them to be too strong or too frequent if given in high doses or for too long.
Choice A is wrong because oxytocin does not decrease body temperature.
Choice B is wrong because oxytocin does not cause maternal cardiac arrhythmias.
Choice C is wrong because oxytocin does not cause urinary retention.
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