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 priority nursing action when the fetal heart rate shows a deceleration after the contraction has started, with the lowest point occurring after the peak of the contraction, is to change the client's position. This deceleration pattern is called "late decelerations,” and it is typically associated with uteroplacental insufficiency, which can be caused by maternal hypotension or impaired blood flow to the placenta. Changing the client's position, such as moving the client to their side or repositioning them, can alleviate pressure on the vena cava and improve blood flow to the placenta, thus potentially resolving or minimizing the late decelerations.
Choice B rationale:
Inserting a scalp electrode (Choice B) is not the priority action in this situation. While a scalp electrode may be used to monitor the fetal heart rate more accurately and continuously, it is not the initial intervention for addressing late decelerations.
Choice C rationale:
Preparing for amnioinfusion (Choice C) may be considered if there are variable decelerations (caused by cord compression) present, but it is not the priority intervention for late decelerations.
Choice D rationale:
Documenting benign decelerations (Choice D) is not appropriate in this scenario since late decelerations are not considered benign and require immediate action.
Correct Answer is D
Explanation
Choice D rationale:
During the transition phase of labor, the nurse should encourage the client to use a pant- blow breathing pattern. The transition phase is intense, and pant-blow breathing (a form of controlled breathing) can help the client manage the pain and reduce anxiety. Panting during contractions allows the client to focus on short, shallow breaths, which can be more effective than deep breathing during this stage.
Choice A rationale:
Assisting the client to void every 3 hours is important during labor, but it is not specific to the transition phase. The nurse should encourage the client to void regularly during the entire labor process to prevent bladder distension and facilitate the descent of the baby. However, during the transition phase, the client may be more focused on contractions and may not need reminders to void every 3 hours.
Choice B rationale:
Monitoring contractions every 30 minutes is not appropriate during the transition phase of labor. The transition phase is characterized by frequent and strong contractions, and continuous monitoring of contractions is usually required during this phase to ensure fetal well-being and progress in labor.
Choice C rationale:
Placing the client into a lithotomy position is not appropriate during the transition phase of labor. The lithotomy position, where the client lies on their back with legs raised and supported in stirrups, is often used during the pushing phase. During the transition phase, it is more common for the client to be in an upright or semi-reclining position to facilitate the descent of the baby through the birth canal.
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