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 D

Explanation

Choice A Reason: Respiratory rate of 16. This is an incorrect answer that indicates a normal finding that does not suggest magnesium sulfate toxicity. Respiratory rate is a measure of the number of breaths per minute, which reﬂects the respiratory function and oxygenation status. Respiratory rate of 16 is within the normal range for adults, which is 12 to 20 breaths per minute. Respiratory rate of 16 does not indicate magnesium sulfate toxicity, which can cause respiratory rate below 12 breaths per minute.

Choice B Reason: Complaints by the client of feeling ﬂushed and warm. This is an incorrect answer that indicates a common side eﬀect that does not indicate magnesium sulfate toxicity. Feeling ﬂushed and warm are sensations that are caused by vasodilation (widening of blood vessels), which can occur as a result of magnesium sulfate administration. Feeling ﬂushed and warm are not signs of magnesium sulfate toxicity, but rather expected and mild reactions that usually subside within a few hours.

Choice C Reason: Fetal heart rate of 120. This is an incorrect answer that indicates a normal finding that does not suggest magnesium sulfate toxicity. Fetal heart rate is a measure of the number of beats per minute of the fetal heart, which reﬂects the fetal well-being and oxygenation status. Fetal heart rate of 120 is within the normal range for fetuses, which is 110 to 160 beats per minute. Fetal heart rate of 120 does not indicate magnesium sulfate toxicity, which can cause fetal heart rate below 110 beats per minute or above 160 beats per minute.

Choice D Reason: Patellar reﬂexes are absent. This is because absent patellar reﬂexes are a sign of magnesium sulfate toxicity, which is a condition where the level of magnesium in the blood is too high, which can cause adverse eﬀects on the neuromuscular and cardiovascular systems. Magnesium sulfate is a medication that is used to prevent or treat preterm labor, which is labor that occurs before 37 weeks of gestation. Magnesium sulfate works by relaxing the uterine muscles and inhibiting uterine contractions. However, magnesium sulfate can also aﬀect other muscles and nerves in the body, and cause symptoms such as muscle weakness, respiratory depression, hypotension, or cardiac arrest.

A. Assisting with the delivery of the placenta and ensuring that the fundus is contracted afterward. B. Palpating the woman's fundus for position and firmness. C. Encouraging the woman to push with her contractions. D. Alleviating perineal discomfort with the application of ice packs.

Correct Answer is A

Explanation

Choice A Reason: Assisting with the delivery of the placenta and ensuring that the fundus is contracted afterward. This is an appropriate action for the nurse to perform during the third stage of labor, as it helps complete the process of labor and prevent complications.

Choice B Reason: Palpating the woman's fundus for position and firmness. This is an action that is done after the delivery of the placenta, not during. It is important to monitor the fundal height, location, and consistency to assess uterine involution and bleeding.

Choice C Reason: Encouraging the woman to push with her contractions. This is an action that is done during the second stage of labor, not the third. The second stage of labor is the period from full cervical dilation to the birth of the baby. The nurse's role is to support and coach the woman to push eﬀectively with her contractions.

Choice D Reason: Alleviating perineal discomfort with the application of ice packs. This is an action that is done after the delivery of the placenta, not during. It is a comfort measure that can reduce swelling, pain, and inﬂammation in the perineal area.

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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:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A woman is being treated for preterm labor with magnesium sulfate. Which finding by the nurse indicates magnesium sulfate toxicity? Select one:

Correct Answer is D

Explanation

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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: