Following delivery, the nurse places the newborn under a radiant heat warmer. Which of the following is this action used to prevent?
Cold stress.
Respiratory depression.
Thermogenesis.
Tachycardia.
The Correct Answer is A
Choice A rationale:
Placing the newborn under a radiant heat warmer is used to prevent cold stress. Newborns are at risk of losing body heat rapidly, and cold stress can lead to various complications, including respiratory distress, hypoglycemia, and metabolic acidosis. The radiant heat warmer helps maintain the baby's body temperature within the normal range, promoting overall stability and reducing the risk of cold-related issues.
Choice B rationale:
The nurse should not choose choice B, "Respiratory depression,” as the action used to prevent. Placing the newborn under a radiant heat warmer does not specifically target respiratory depression. Respiratory depression in newborns may be related to various factors, such as anesthesia exposure during delivery or certain medications, and it requires appropriate monitoring and management rather than just heat regulation.
Choice C rationale:
The nurse should not choose choice C, "Thermogenesis,” as the action used to prevent. Thermogenesis refers to the generation of heat in the body, which is essential for maintaining body temperature. While the radiant heat warmer indirectly supports thermogenesis by preventing heat loss, the main purpose of using the warmer is to prevent cold stress, as stated in choice A.
Choice D rationale:
The nurse should not choose choice D, "Tachycardia,” as the action used to prevent. Tachycardia refers to an abnormally fast heart rate, and the use of a radiant heat warmer does not specifically target this condition. The purpose of the warmer, as explained earlier, is to maintain the baby's body temperature and prevent cold stress, not to address tachycardia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
When late decelerations are noted in the fetal heart rate (FHR) tracing, it indicates that the fetal oxygen supply may be compromised. The nurse should first change the client's position, such as moving her to the left lateral position or a hands-and-knees position, to improve uteroplacental blood flow and relieve pressure on the vena cava.
Choice B rationale:
Palpating the uterus to assess for tachysystole is not the priority action when late decelerations are observed. Tachysystole refers to excessively frequent uterine contractions and may contribute to fetal distress, but the immediate concern is addressing the decelerations.
Choice C rationale:
Increasing the client's IV infusion rate may not address the underlying cause of late decelerations. While maintaining hydration is important, it's not the first action to take in this situation.
Choice D rationale:
Administering oxygen at 10 L/min via a non-rebreather mask may be beneficial for the client and fetus, but it is not the first action to take. The nurse should address the position change first to improve oxygenation through better blood flow before considering supplemental oxygen.
Correct Answer is A
Explanation
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.
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