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 C
Explanation
Choice A rationale:
Digoxin is a cardiac glycoside and is primarily used in the management of certain heart conditions, such as heart failure and atrial fibrillation. It is not indicated for hyperemesis gravidarum, which is severe and persistent vomiting during pregnancy.
Choice B rationale:
Calcium gluconate is a mineral supplement used to treat calcium deficiencies. It is not a standard treatment for hyperemesis gravidarum.
Choice C rationale:
Vitamin Bs (B6 and B12) are commonly used to manage hyperemesis gravidarum. Vitamin B6, also known as pyridoxine, has been shown to alleviate nausea and vomiting during pregnancy. Vitamin B12 may also be administered to help manage symptoms. Both vitamins are safe to use during pregnancy.
Choice D rationale:
Propranolol is a beta-blocker used to treat high blood pressure, heart conditions, and migraines. It is not recommended for managing hyperemesis gravidarum and is generally avoided during pregnancy due to potential risks to the developing fetus.
Correct Answer is D
Explanation
Choice A rationale:
A client who gave birth 1 day ago and needs Rh(D) immune globulin should be seen soon but not necessarily first. Rh(D) immune globulin is administered to Rh-negative mothers with Rh- positive infants to prevent isoimmunization in future pregnancies.
Choice B rationale:
A client who gave birth 3 days ago and reports breast fullness is likely experiencing normal postpartum breast engorgement. This client can be attended to after the client with more urgent symptoms.
Choice C rationale:
A client who gave birth 12 hours ago and reports an increase in urinary output might have diuresis, which is a common postpartum physiological change. Although this requires assessment, it is not as urgent as the client in choice D.
Choice D rationale:
The nurse should see the client who gave birth 8 hours ago and is saturating a perineal pad every hour first because excessive postpartum bleeding could indicate hemorrhage, a potentially life-threatening complication. Immediate assessment and intervention are crucial in this situation.
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