A nurse is caring for a client who has just delivered her first newborn. The nurse anticipates hyperbilirubinemia due to Rh incompatibility. The nurse should understand that hyperbilirubinemia occurs with Rh incompatibility for which of the following reasons?
The client's blood does not contain the Rh factor, so she produces anti-Rh antibodies that cross the placental barrier and cause hemolysis of red blood cells in newborns.
The client's blood contains the Rh factor, and the newborn's does not, and antibodies that destroy red blood cells are formed in the fetus.
The client has a history of receiving a transfusion with Rh-negative blood.
The client's anti-A and anti-B antibodies cross the placenta and cause the destruction of the fetal red blood cells.
The Correct Answer is A
Choice A rationale:
Rh incompatibility occurs when an Rh-negative client is exposed to Rh-positive fetal blood, typically during a prior pregnancy or delivery. The client’s immune system produces anti-Rh antibodies that cross the placenta in subsequent pregnancies, attacking the Rh-positive red blood cells of the fetus. This hemolysis releases bilirubin, leading to hyperbilirubinemia in the newborn.
Choice B rationale:
Rh incompatibility only occurs when the client is Rh-negative and the fetus is Rh-positive. An Rh-positive client will not form antibodies against an Rh-negative fetus, as their immune system recognizes the Rh factor as normal.
Choice C rationale:
This choice is not related to the mechanism of Rh incompatibility. Receiving a transfusion with Rh-negative blood would not cause the mother's immune system to produce anti-Rh antibodies or lead to Rh incompatibility with her newborn.
Choice D rationale:
This choice describes the ABO blood group system, not the Rh factor. ABO incompatibility can occur when a mother with blood type O (producing anti-A and anti-B antibodies) has a newborn with blood type A, B, or AB, leading to hemolysis of the fetal red blood cells. However, the question specifically mentions Rh incompatibility, which involves the Rh factor, not the ABO system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Restricting protein intake to less than 40 g/day is not appropriate for a client with preeclampsia with severe features. While protein restriction might be advised in some cases of preeclampsia, it is not a priority in severe cases where the focus is on managing potential complications.
Choice B rationale:
Initiating seizure precautions is essential in managing a client with preeclampsia with severe features. Preeclampsia can lead to eclampsia, a condition characterized by seizures. Seizure precautions involve implementing measures to prevent injury during a seizure, such as padding the side rails of the bed, ensuring a clear environment, and having emergency equipment readily available.
Choice C rationale:
Initiating an infusion of 0.9% sodium chloride at 150 ml/hr is not directly related to managing preeclampsia with severe features. Although intravenous fluids may be necessary in some cases, the priority in this situation is to prevent and manage potential seizures.
Choice D rationale:
Encouraging the client to ambulate twice per day is not appropriate for a client with preeclampsia with severe features. Bed rest is often recommended in severe cases to reduce stress on the cardiovascular system and decrease the risk of complications.
Correct Answer is C
Explanation
Choice A rationale:
Gravida refers to the number of times a woman has been pregnant, and Para indicates the number of pregnancies that have reached viability (at least 20 weeks) Since the client has
been pregnant for the fourth time and delivered two full-term newborns (reached viability), she is gravida 4, and since she had one spontaneous abortion (miscarriage) at 10 weeks of gestation, she is para 2 (two pregnancies reached viability)
Choice B rationale:
This choice would be incorrect because it indicates that the client has had three pregnancies reaching viability, but she has only had two full-term newborns and one miscarriage.
Choice C rationale:
This is the correct choice, as explained above. Choice D rationale:
This choice would be incorrect because it indicates that the client has had four pregnancies reaching viability, but she has only had two full-term newborns and one miscarriage.
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