A nurse is assessing a newborn.
Which of the following findings indicates a need to check the newborn's blood glucose level for hypoglycemia?

Choice A rationale

Fetal heart rate assessment is paramount before administering an opioid analgesic during labor. Opioids can cross the placental barrier and cause central nervous system depression in the fetus, potentially leading to decreased fetal heart rate variability or transient decelerations. Therefore, a baseline and ongoing fetal heart rate monitoring is essential to ensure fetal well-being.

Choice B rationale

Deep tendon reflexes are primarily assessed when administering magnesium sulfate for preeclampsia, not typically before opioid analgesics. Magnesium sulfate can cause central nervous system depression and affect neuromuscular transmission, necessitating regular monitoring of deep tendon reflexes to assess for signs of toxicity. Opioids do not directly affect reflex activity in the same manner.

Choice C rationale

Blood glucose levels are not a standard assessment before administering opioid analgesics during labor. Blood glucose monitoring is crucial for clients with diabetes or gestational diabetes, or those receiving intravenous dextrose, but it is not directly related to opioid administration and its immediate effects on the mother or fetus.

Choice D rationale

Blood pressure assessment is crucial before administering an opioid analgesic because these medications can cause maternal hypotension due to their vasodilatory effects. Hypotension can reduce placental perfusion, compromising fetal oxygenation. Establishing a baseline blood pressure and monitoring it closely after administration helps ensure maternal cardiovascular stability and fetal well-being.

Choice E rationale

Pain level assessment is fundamental before administering an opioid analgesic. The primary purpose of administering an opioid is to alleviate labor pain. A thorough assessment of the intensity, location, and character of pain guides the choice, dosage, and timing of the analgesic, ensuring effective pain management and patient comfort while minimizing unnecessary medication.

Choice A rationale

A positive phenylketonuria (PKU) test indicates an inability to metabolize the amino acid phenylalanine, not galactose. Galactosemia is a separate metabolic disorder characterized by the body's inability to break down galactose, a sugar found in milk. Both are inborn errors of metabolism, but their biochemical pathways and dietary interventions differ significantly.

Choice B rationale

A positive PKU test does not indicate a slow metabolism in general. Instead, it specifically points to a deficiency in the enzyme phenylalanine hydroxylase (PAH), which is necessary for converting phenylalanine into tyrosine. This enzymatic defect leads to an accumulation of phenylalanine in the blood and tissues, which can become neurotoxic if untreated.

Choice C rationale

A positive finding for phenylketonuria (PKU) signifies a genetic disorder where the body lacks or has insufficient amounts of the enzyme phenylalanine hydroxylase. This enzyme is crucial for metabolizing the essential amino acid phenylalanine into tyrosine. Without proper enzyme function, phenylalanine accumulates in the blood, leading to neurotoxic effects if a specialized diet is not initiated promptly.

Choice D rationale

A positive PKU finding, if left untreated, directly leads to severe intellectual disability and other neurological problems due to the accumulation of phenylalanine, which is toxic to the developing brain. Therefore, it indicates an increased risk for neurologic anomalies if the condition is not managed through a strict low-phenylalanine diet from early infancy. .