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
A. Peanut butter and wheat bread contain high levels of phenylalanine, which should be avoided in clients with phenylketonuria.
B. A sliced apple and red grapes are low in phenylalanine and are safe choices for a client with phenylketonuria.
C. Chocolate, cookies, and milk contain phenylalanine, making them unsuitable for the client.
D. Eggs and cheese are high in phenylalanine and should be restricted in the diet.
Correct Answer is A
Explanation
Choice A rationale:
Hormonal changes play a significant role in postpartum depression. After childbirth, there is a rapid decline in estrogen and progesterone levels, which can lead to mood fluctuations and depressive symptoms. Understanding this hormonal aspect is crucial for the nurse to address postpartum depression risk factors.
Choice B rationale:
Increased social support systems would be considered a protective factor against postpartum depression rather than a risk factor. Having strong social support can help mitigate the risk of developing postpartum depression.
Choice C rationale:
High self-esteem is not typically a risk factor for postpartum depression. In fact, individuals with higher self-esteem may be more resilient in coping with the challenges of postpartum period.
Choice D rationale:
Being a mother of two other children is not inherently a risk factor for postpartum depression. While having multiple children can be demanding, it does not directly increase the risk of developing postpartum depression. The hormonal changes and individual circumstances play more significant roles.
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