A nurse is caring for a client who is 6 hr postpartum. The client is Rh-negative and her newborn is Rh-positive. The client asks why an indirect Coombs test was ordered by the provider. Which of the following is an appropriate response by the nurse?
"It determines the presence of maternal antibodies in the newborn's blood."
"It determines if kernicterus will occur in the newborn."
"It detects Rh-positive antibodies in the mother's blood."
"It detects Rh-negative antibodies in the newborn's blood."
The Correct Answer is C
Choice A reason: This statement is incorrect, as it describes the direct Coombs test, not the indirect Coombs test. The direct Coombs test is performed on the newborn's blood, and it detects the presence of maternal antibodies that have attached to the newborn's red blood cells. The direct Coombs test can help diagnose hemolytic disease of the newborn, which is a condition where the maternal antibodies destroy the newborn's red blood cells, causing anemia and jaundice.
Choice B reason: This statement is incorrect, as it is not the purpose of the indirect Coombs test, but rather a possible complication of hemolytic disease of the newborn. Kernicterus is a severe form of jaundice that occurs when the bilirubin level in the blood is very high, and it can cause brain damage, deafness, or death. Kernicterus can be prevented by treating the jaundice with phototherapy or exchange transfusion.
Choice C reason: This statement is correct, as it describes the indirect Coombs test, which is performed on the mother's blood, and it detects the presence of Rh-positive antibodies that have formed in response to the exposure to the Rh-positive blood of the newborn. The indirect Coombs test can help identify the risk of hemolytic disease of the newborn, and guide the administration of Rh immunoglobulin, which is a medication that prevents the formation of Rh-positive antibodies.
Choice D reason: This statement is incorrect, as it is not possible for the newborn to have Rh-negative antibodies, since the newborn has Rh-positive blood. Rh-negative antibodies are produced by Rh-negative individuals who have been exposed to Rh-positive blood, such as Rh-negative mothers who have Rh-positive newborns. Rh-negative antibodies can cross the placenta and attack the Rh-positive red blood cells of the newborn, causing hemolytic disease of the newborn.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: To stay with the client and call for help is the highest priority during a seizure, because it ensures the safety of the client and the fetus, and allows the nurse to monitor the vital signs and fetal heart rate. The nurse should also protect the client from injury and turn the client to the side to prevent aspiration.
Choice B reason: To suction the mouth to prevent aspiration is not the highest priority during a seizure, because it can cause more harm than good. Suctioning can stimulate the gag reflex and increase the risk of vomiting and aspiration. It can also injure the oral mucosa and trigger another seizure.
Choice C reason: To administer oxygen by mask is not the highest priority during a seizure, because it may not be effective or necessary. Oxygen administration can be difficult or impossible during a seizure, and it may not improve the oxygen saturation or fetal outcome. Oxygen should only be given if hypoxia is confirmed by pulse oximetry or arterial blood gas analysis.
Choice D reason: To insert an oral airway is not the highest priority during a seizure, because it can be dangerous and contraindicated. Inserting an oral airway can damage the teeth and tongue, and increase the risk of vomiting and aspiration. It can also provoke another seizure or laryngospasm. An oral airway should only be used if the client is unconscious and has no gag reflex.
Correct Answer is C
Explanation
Choice A reason: Monitoring the newborn's blood pressure is not the most appropriate action, as it is not directly related to the signs of diaphoresis, jitteriness, and lethargy. These signs are more indicative of hypoglycemia, which is a low blood sugar level that can affect newborns, especially those who are premature, small for gestational age, or have diabetic mothers.
Choice B reason: Initiating phototherapy is not the most appropriate action, as it is used to treat hyperbilirubinemia, which is a high level of bilirubin in the blood that can cause jaundice, a yellowish discoloration of the skin and eyes. Hyperbilirubinemia does not cause diaphoresis, jitteriness, or lethargy.
Choice C reason: Obtaining blood glucose by heel stick is the most appropriate action, as it can confirm the diagnosis of hypoglycemia, which is the most likely cause of the signs of diaphoresis, jitteriness, and lethargy. The nurse should perform a heel stick using a sterile lancet and a glucose meter, and obtain a blood sample from the lateral aspect of the heel. The nurse should also provide warmth, stimulation, and feeding to the newborn, and report the blood glucose level to the provider.
Choice D reason: Placing the newborn in a radiant warmer is not the most appropriate action, as it can cause dehydration, fluid loss, and further hypoglycemia. The nurse should use a radiant warmer only if the newborn is hypothermic, which is a low body temperature that can also affect newborns. The nurse should monitor the newborn's temperature and skin color, and adjust the warmer accordingly.
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