What are typical signs of hypoglycemia in a newborn?

The presence of pallor and lethargy in a newborn can indicate hypoglycemia, as these signs suggest that the infant's body is not receiving enough glucose to meet its metabolic demands. Pallor may occur due to poor perfusion or inadequate oxygenation, while lethargy reflects a decreased level of alertness or energy. These signs are particularly concerning in a newborn, as they can signal a significant drop in blood sugar levels, which can lead to more serious complications if not addressed promptly.

In contrast, the other options do not accurately represent typical signs of hypoglycemia. Excessive crying and hyperactivity may suggest other issues, such as discomfort or overstimulation, whereas weight gain and normal feeding would indicate that the newborn is receiving adequate nutrition and energy. Resting quietly and sleeping are common behaviors in newborns and do not correlate specifically with hypoglycemia, as they can occur in well-nourished infants as well. Understanding these signs is crucial for early identification and management of hypoglycemia in the neonatal population.