Physics · Medical Physics and Neonatology Principles
A nurse assessing a newborn for jaundice notes yellowish discoloration extending over the lower trunk and thighs, and confirms blanching over a bony prominence. Based on standard clinical guidelines for neonatal jaundice (Kramer's rule), which interpretation and action is most appropriate?
- 1Jaundice is limited to the head and neck; estimated bilirubin is less than 6 mg/dL and no further assessment is needed.
- 2Jaundice corresponds to Kramer's zone 3 with an estimated bilirubin level of 8-12 mg/dL; visual assessment is for screening only, and a non-invasive or serum method should be used for confirmation.✓
- 3Jaundice corresponds to Kramer's zone 5 with an estimated bilirubin level greater than 15 mg/dL, confirming severe pathology without further testing.
- 4Jaundice begins cephalocaudally from the hands and feet; transcutaneous bilirubinometry provides no useful clinical information in newborns.
Correct answer
Jaundice corresponds to Kramer's zone 3 with an estimated bilirubin level of 8-12 mg/dL; visual assessment is for screening only, and a non-invasive or serum method should be used for confirmation.
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