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 A
Explanation
The correct answer is A. Initiate continuous monitoring of the FHR. For a client with placenta previa, continuous fetal heart rate (FHR) monitoring is essential to assess the baby's well-being due to the risk of fetal distress from reduced oxygen supply
Choice A reason:
Continuous FHR monitoring is a standard care practice for clients with placenta previa to promptly detect any signs of fetal distress and intervene as necessary.
Choice B reason:
Betamethasone is typically administered to enhance fetal lung maturity before 34 weeks of gestation, not for placenta previa. Its use at 35 weeks is less common unless there's a risk of preterm birth within 7 days and the patient hasn't received a previous course.
Choice C reason:
Checking the cervix can induce bleeding and is contraindicated in placenta previa because it may disturb the placental site and exacerbate bleeding.
Choice D reason:
Misoprostol is used for labor induction or to treat postpartum hemorrhage. It is not indicated for placenta previa management and can cause uterine contractions leading to increased bleeding.
Correct Answer is C
Explanation
Choice A rationale:
Increasing potassium intake is not specifically associated with relieving breast discomfort during menstruation. There is no established link between potassium intake and fibrocystic breast changes.
Choice B rationale:
Increasing fluid intake is generally beneficial for overall health, but it is not a specific recommendation for managing breast discomfort during menstruation. It may not have a direct impact on fibrocystic breast changes.
Choice C rationale:
Decreasing sodium intake before menstruation is a relevant instruction for managing breast discomfort associated with fibrocystic breast changes. High sodium intake can lead to water retention and breast swelling, exacerbating discomfort.
Choice D rationale:
Daily fiber intake is important for bowel health but is not directly related to managing breast discomfort during menstruation or fibrocystic breast changes.
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