A nurse is reviewing the laboratory results of a newborn who is 24 hr old. Which of the following findings should the nurse report to the provider?
Hemoglobin 12 g/dL.
Glucose 50 mg/dL.
Bilirubin 4 mg/dL.
Platelets 200,000/mm³.
The Correct Answer is A
The correct answer is: A. Hemoglobin 12 g/dL.
Choice A reason:
Hemoglobin levels in newborns are expected to be significantly higher than in adults due to the physiological adaptation to life outside the womb. The normal range for a newborn’s hemoglobin is approximately 14 to 24 g/dL1234. A level of 12 g/dL is below the expected range and could indicate anemia or other underlying conditions that may require further investigation and intervention by the healthcare provider.
Choice B reason:
The glucose level in a newborn can vary, especially within the first few hours after birth. Normal blood glucose levels for a newborn 1 to 2 hours old can be as low as 25 mg/dL and can rise to adult levels (60-100 mg/dL) within the first few days5. A glucose level of 50 mg/dL in a 24-hour-old newborn falls within the acceptable range and would not typically require reporting to the provider unless accompanied by symptoms of hypoglycemia.
Choice C reason:
Bilirubin levels in newborns can be elevated due to the normal breakdown of fetal hemoglobin as the baby’s liver matures. Normal bilirubin levels for a newborn can range from 1.0 to 12.0 mg/dL6. A bilirubin level of 4 mg/dL is within the normal range for a 24-hour-old newborn and is not typically a cause for concern unless there are signs of jaundice or other symptoms.
Choice D reason:
The normal platelet count for a newborn ranges from 150,000 to 450,000/mm³7. A platelet count of 200,000/mm³ is well within the normal range for a newborn and would not need to be reported to the healthcare provider.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The nurse should discontinue the oxytocin infusion if the client's contraction frequency is every 3 minutes. Frequent contractions may lead to uterine hyperstimulation, which can reduce fetal blood flow and oxygenation, potentially causing fetal distress. Normal contraction frequency during labor is typically every 2 to 5 minutes.
Choice B rationale:
Contraction duration of 100 seconds is not an indication to discontinue the oxytocin infusion. The duration of contractions can vary during labor, and 100 seconds is within the normal range of contraction duration, which is usually 45 to 90 seconds.
Choice C rationale:
Fetal heart rate with moderate variability is not an indication to discontinue the oxytocin infusion. Moderate variability in fetal heart rate is a reassuring sign, indicating a healthy fetal response to labor. It shows that the fetus is tolerating the contractions well and is not experiencing fetal distress.
Choice D rationale:
A fetal heart rate of 118/min is not an indication to discontinue the oxytocin infusion. The normal fetal heart rate range is typically between 110 to 160 beats per minute, and a heart rate of 118/min falls within this normal range. However, if the fetal heart rate deviates significantly from the normal range or shows signs of distress, further assessment and intervention are required.
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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