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
Choice A rationale:
The client's statement, "I will check the identification badge of anyone who removes my baby from our room,” indicates an understanding of newborn safety. This statement shows the client's awareness of the importance of verifying the identity of anyone handling their baby before allowing them to be taken out of the room. Checking identification badges helps ensure that only authorized personnel, such as nurses or hospital staff, are allowed to handle the newborn, reducing the risk of unauthorized individuals taking the baby.
Choice B rationale:
This statement is incorrect and does not demonstrate an understanding of newborn safety. Including a photo of the baby along with public birth announcements to social media can compromise the baby's security and privacy. It may expose sensitive information about the baby's location and identity, making the baby vulnerable to potential risks.
Choice C rationale:
This statement is incorrect as it poses a safety risk to the newborn. Allowing the baby to sleep on the bed when the client is in the shower increases the risk of falls or suffocation. The baby should always be placed in a safe sleep environment, such as a crib or bassinet, to minimize the risk of accidents.
Choice D rationale:
This statement is incorrect and does not reflect an understanding of newborn safety. Nurses should not carry the baby in their arms to the nursery. Instead, they should use a crib or an infant carrier to transport the baby safely.
Correct Answer is C
Explanation
Choice A rationale:
While there is a risk of infection with any internal examination, it is not the primary reason for avoiding internal examinations in a client with placenta previa. The main concern is avoiding trauma to the placenta, which could result in significant bleeding.
Choice B rationale:
Although internal examinations may potentially stimulate uterine contractions, leading to preterm labor in some cases, this is not the primary reason for avoiding such examinations in clients with placenta previa. The primary concern remains the risk of bleeding due to placental disruption.
Choice C rationale:
The correct explanation for the nurse to provide is that an internal examination could result in profound bleeding. Placenta previa occurs when the placenta partially or completely covers the cervix, and any manipulation of the cervix or uterus through an internal examination could disrupt the placenta and cause severe bleeding, endangering both the mother and the baby.
Choice D rationale:
While there is a risk of rupturing the membranes during an internal examination, this is not the primary reason for avoiding such examinations in clients with placenta previa. The primary concern remains the risk of bleeding due to placental disruption.
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