An nurse is counseling a new mother about the immunologic properties of breast milk. The nurse emphasizes that breast milk is the main source of which specific immunoglobulin?
Select one:

IgG.

IgE.

IgA.

IgM.

Answer and Explanation

The Correct Answer is C

Choice A Reason: IgG. This is an incorrect answer that refers to a diﬀerent type of antibody that is not abundant in breast milk. IgG is a type of antibody that provides systemic immunity against various antigens. IgG is found in low concentrations in breast milk, as it does not cross the mammary epithelium easily. IgG can protect the infant from some infections, but it is mainly transferred from the mother to the fetus through the placenta during pregnancy.

Choice B Reason: IgE. This is an incorrect answer that refers to a diﬀerent type of antibody that is not relevant to breast milk. IgE is a type of antibody that mediates allergic reactions and parasitic infections. IgE is found in very low concentrations in breast milk, as it does not have a significant role in mucosal immunity. IgE can trigger mast cells and basophils to release histamine and other inﬂammatory mediators, which can cause symptoms such as itching, swelling, or bronchoconstriction.

Choice C Reason: IgA. This is because IgA is a type of antibody that protects mucosal surfaces from pathogens and toxins. IgA is found in high concentrations in breast milk, especially in colostrum (the first milk produced after delivery). IgA can bind to bacteria and viruses in the infant's gastrointestinal tract and prevent them from ataching to the intestinal wall or crossing into the bloodstream. IgA can also enhance the infant's immune system by stimulating lymphoid tissue development and modulating inﬂammatory responses.

Choice D Reason: IgM. This is an incorrect answer that refers to a diﬀerent type of antibody that is not abundant in breast milk. IgM is a type of antibody that activates complement system and agglutinates antigens. IgM is found in low concentrations in breast milk, as it does not cross the mammary epithelium easily due to its large size. IgM can protect the infant from some infections, but it is mainly produced by the infant's own immune system in response to exposure to antigens.

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Correct Answer is A

Explanation

Choice A Reason: Central cyanosis and poor tone. These are signs of hypoxia and asphyxia in newborns, which indicate a need for resuscitation. Central cyanosis means bluish discoloration of the skin or mucous membranes around the mouth, nose, or eyes. Poor tone means limpness or lack of muscle activity.

Choice B Reason: Heart rate of 160 beats per minute and spitting up mucus. These are not signs of hypoxia or asphyxia in newborns, but rather normal findings or minor issues. A normal heart rate for a newborn ranges from 120 to 160 beats per minute. Spitting up mucus may be due to excess secretions or swallowing amniotic ﬂuid, which can be cleared by suctioning or burping.

Choice C Reason: Crying with respirations of greater than 60 breaths per minute. These are not signs of hypoxia or asphyxia in newborns, but rather normal or expected findings. Crying indicates that the newborn has a patent airway and adequate lung expansion. Respirations of greater than 60 breaths per minute may be normal for a newborn in transition or due to transient tachypnea, which usually resolves within a few hours.

Choice D Reason: Blue hands and feet but lips that are slowly pinking up. These are not signs of hypoxia or asphyxia in newborns, but rather a common condition called acrocyanosis. Acrocyanosis means bluish discoloration of the hands and feet due to poor peripheral circulation in response to cold exposure or stress. It does not aﬀect oxygenation or ventilation and usually disappears within 24 to 48 hours after birth.

A. "Our baby's newborn rash is from this syndrome." B. "His face looks like it does due to this problem." C. "He can show signs of withdrawal from alcohol exposure like jiteriness, sweating, hyper reﬂexes, poor feeding and not sleeping well." D. "He is at risk of having intellectual disabilities, so we will need to get extra services to support him."

Correct Answer is A

Explanation

Choice A Reason: "Our baby's newborn rash is from this syndrome." This is because this statement by a parent indicates that additional teaching is required, as it shows a misunderstanding or confusion about FAS and its manifestations. FAS is a condition that occurs when a woman consumes alcohol during pregnancy, which can aﬀect the development and function of various organs and systems in the fetus and child. FAS can cause physical, behavioral, and cognitive problems such as facial abnormalities, growth retardation, learning difficulties, and atention deficits. FAS does not cause newborn rash, which is a common and benign condition that aﬀects many newborns regardless of maternal alcohol intake. Newborn rash is also known as erythema toxicum neonatorum or baby acne, which is characterized by small red bumps or pustules on the face, chest, or back that usually disappear within a few weeks.

Choice B Reason: "His face looks like it does due to this problem." This is a correct answer that indicates adequate understanding of FAS and its features. Facial abnormalities are one of the characteristic signs of FAS, which include small eye openings, thin upper lip, ﬂat nasal bridge, and smooth philtrum (the groove between the nose and upper lip).

Choice C Reason: "He can show signs of withdrawal from alcohol exposure like jiteriness, sweating, hyper reﬂexes, poor feeding and not sleeping well." This is a correct answer that indicates adequate understanding of FAS and its complications. Signs of withdrawal are possible eﬀects of FAS, which occur when the fetus or newborn is exposed to alcohol in utero or through breast milk, which can cause neurotoxicity and dependency. Signs of withdrawal can include jiteriness, sweating, hyper reﬂexes, poor feeding, and not sleeping well, as well as irritability, seizures, or tremors.

Choice D Reason: "He is at risk of having intellectual disabilities, so we will need to get extra services to support him." This is a correct answer that indicates adequate understanding of FAS and its implications. Intellectual disabilities are potential outcomes of FAS, which aﬀect the cognitive development and function of the child. Intellectual disabilities can cause problems with memory, Reasoning, language, and social skills. Extra services and support may be needed to help the child achieve their optimal potential and quality of life.

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An nurse is counseling a new mother about the immunologic properties of breast milk. The nurse emphasizes that breast milk is the main source of which specific immunoglobulin? Select one:

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Naxlex Comprehensive Predictor Exams

Correct Answer is A

Explanation

Parents have been told their child has fetal alcohol syndrome (FAS). Which statement by a parent indicates that additional teaching is required? Select one:

Correct Answer is A

Explanation

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An nurse is counseling a new mother about the immunologic properties of breast milk. The nurse emphasizes that breast milk is the main source of which specific immunoglobulin?
Select one: