A first-time father is changing the diaper of his 1-day-old daughter. He asks the nurse, "What is this black, sticky stuff in her diaper?" The nurse's best response is:

Choice a) Document the event in the nurses' notes is incorrect because this is not a priority action for a neonate who is showing signs of hypoglycemia. Hypoglycemia is a condition where the blood glucose level is lower than normal, which can cause neurological and metabolic problems in newborns. Neonates of diabetic mothers are at higher risk of developing hypoglycemia due to increased insulin production and decreased glycogen stores.

Documenting the event in the nurses' notes is an important step, but it should be done after assessing and treating the neonate's condition.

Choice b) Test for blood glucose level is correct because this is the most important action for a neonate who is exhibiting symptoms of hypoglycemia. The nurse should use a heel stick or a cord blood sample to measure the blood glucose level of the neonate as soon as possible, as hypoglycemia can lead to serious complications such as seizures, coma, brain damage, or death if left untreated. The normal blood glucose range for a full-term neonate is 40 to 60 mg/dL in the first hour of life, and 50 to 90 mg/dL thereafter. A blood glucose level below 40 mg/dL indicates hypoglycemia and requires immediate intervention.

Choice c) Notify the clinician stat is incorrect because this is not the most urgent action for a neonate who is suffering from hypoglycemia. The nurse should notify the clinician after confirming the diagnosis of hypoglycemia and initiating treatment, such as feeding or administering intravenous glucose. The clinician may order further tests or treatments depending on the severity and cause of the hypoglycemia, but the nurse should not delay the initial management of the neonate's condition.

Choice d) Start an intravenous line with D5W is incorrect because this is not the first-line treatment for a neonate who has hypoglycemia. D5W stands for dextrose 5% in water, which is a solution that contains glucose and water. It can be used to treat hypoglycemia by providing a source of energy and fluid to the neonate. However, before starting an intravenous line with D5W, the nurse should first attempt to feed the neonate with breast milk or formula, as this can also raise the blood glucose level and provide other nutrients and antibodies. If feeding is unsuccessful or contraindicated, then the nurse should start an intravenous line with D5W as ordered by the clinician.

Choice A: This is incorrect because both physiological and nonphysiological jaundice result from breakdown of erythrocytes. Jaundice is caused by the accumulation of bilirubin, a yellow pigment that is produced when red blood cells are destroyed. However, the rate and extent of hemolysis differ between the two types of jaundice.

Choice B: This is incorrect because kernicterus is a rare and serious complication of jaundice, not a usual outcome. Kernicterus occurs when bilirubin levels are very high and the pigment deposits in the brain, causing neurological damage. It can affect both physiological and nonphysiological jaundice, but it is more likely to occur in nonphysiological jaundice due to higher bilirubin levels and underlying conditions.

Choice C: This is incorrect because both physiological and nonphysiological jaundice begin at the head and progress down the body. This is because bilirubin accumulates in areas with high fat content, such as the skin, eyes, and brain. The distribution of jaundice depends on the level of bilirubin in the blood, not on the type of jaundice.

Choice D: This is the correct answer because nonphysiological jaundice appears in the first 24 hours of life, whereas physiological jaundice appears after the first 24 hours of life. Nonphysiological jaundice is caused by factors that increase hemolysis or impair bilirubin metabolism or excretion, such as blood group incompatibility, infection, liver disease, or enzyme deficiency. Physiological jaundice is caused by normal adaptation processes that occur after birth, such as increased red blood cell turnover, immature liver function, and delayed intestinal flora colonization.