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The nurse is evaluating the laboratory results of a neonate. Which clinical finding is most suggestive of physiologic hyperbilirubinemia?

A. Total bilirubin level increasing by more than 5 mg/dL (86 μmol/L) per day
B. Clinical jaundice lasting beyond 14 days
C. Clinical jaundice before 36 hours of age
D. Total bilirubin levels of 12 mg/dL (205 μmol/L) 3 days after birth

Sagot :

To determine which clinical finding is most suggestive of physiologic hyperbilirubinemia in a neonate, we need to evaluate the conditions that are indicative of such a diagnosis. Physiologic hyperbilirubinemia typically does not exhibit extreme or early jaundice. Here are the step-by-step considerations:

1. Total Bilirubin Level Increase:
- A total bilirubin level increasing by more than 5 mg/dL per day is not typically seen in physiologic hyperbilirubinemia. It suggests more severe or pathological jaundice.

2. Clinical Jaundice Duration:
- Clinical jaundice lasting beyond 14 days is prolonged and could indicate pathological conditions rather than physiologic hyperbilirubinemia, which usually resolves within 10-14 days.

3. Clinical Jaundice Onset:
- Clinical jaundice appearing before 36 hours of age is usually a concern for pathological jaundice and is less likely to be physiologic hyperbilirubinemia, which usually starts later (around 2-3 days of age).

4. Total Bilirubin Levels:
- Total bilirubin levels of 12 mg/dL 3 days after birth fall within the more likely range for physiologic hyperbilirubinemia. This level is not excessively high and corresponds to the typical timing when jaundice due to physiologic reasons peaks.

Given these considerations, the most suggestive clinical finding of physiologic hyperbilirubinemia amongst the options provided is:

"Total bilirubin levels of 12 mg/dL (205 μmol/L) 3 days after birth."

This bilirubin level and its timing are more characteristic of a normal, physiologic process rather than a pathological one.
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