A nurse is providing care for a patient who has recently given birth to her first child. The patient has a history of receiving a transfusion with Rh-negative blood.
The nurse expects hyperbilirubinemia due to Rh incompatibility.
What is the reason for hyperbilirubinemia occurring with Rh incompatibility?
The nurse expects hyperbilirubinemia due to Rh incompatibility.
Gastrointestinal assessment findings.
Respiratory rate.
Deep tendon reflexes.
The Correct Answer is C
Choice A rationale
The patient’s anti-A and anti-B antibodies crossing the placenta and causing the destruction of the fetal red blood cells is related to ABO incompatibility, not Rh incompatibility.
Choice B rationale
If the patient’s blood contains the Rh factor and the newborn’s does not, Rh incompatibility would not occur. Rh incompatibility happens when the mother’s blood does not contain the Rh factor (Rh-negative), but the baby’s blood does contain the Rh factor (Rh-positive).
Choice C rationale
The patient’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. This is the correct reason for hyperbilirubinemia occurring with Rh incompatibility.
Choice D rationale
The patient’s blood containing anti-Rh antibodies that attack the newborn’s red blood cells is a result of Rh incompatibility, but it does not explain why hyperbilirubinemia occurs.
Hyperbilirubinemia occurs due to the breakdown of the extra red blood cells, leading to an increase in bilirubin levels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Gravida 4 Para 3 at 33 weeks of gestation is not an alarming finding. It simply indicates that the woman is pregnant for the fourth time and has had three previous deliveries. This is a normal part of the woman’s obstetric history and does not need to be reported to the provider.
Choice B rationale
Allergies, such as a sulfa allergy, are important to note in the patient’s medical history. However, unless the patient is being prescribed a medication that she is allergic to, this information does not need to be urgently reported to the provider.
Choice C rationale
A height of 165 cm (66 in), weight of 82 kg (180 lb), and BMI of 30.6 are all within normal ranges for a pregnant woman. These measurements are part of routine prenatal care and do not need to be urgently reported to the provider.
Choice D rationale
A weight gain of 32 kg (7 lb) over the last 2 weeks is concerning. Rapid weight gain can be a sign of preeclampsia, a serious pregnancy complication characterized by high blood pressure. This should be reported to the provider immediately.
Correct Answer is C
Explanation
Choice A rationale
Betamethasone does not increase the fetal heart rate. It is a corticosteroid given to pregnant women who are at risk of preterm delivery to enhance fetal lung maturity and prevent respiratory distress syndrome.
Choice B rationale
Betamethasone is not used to stop preterm labor contractions. Other medications, such as tocolytics, are used for this purpose.
Choice C rationale
This is the correct answer. Betamethasone is given to promote fetal lung maturity. It is usually given in two doses, 24 hours apart, and takes effect within 24 hours of administration.
Choice D rationale
Betamethasone does not halt cervical dilation. It is given to enhance fetal lung maturity, not to stop labor.
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