When should a complete blood count (CBC) be considered in the evaluation of a newborn?

• A. For monitoring growth parameters
• B. In cases of suspected sepsis or other infections
• C. To assess metabolic conditions
• D. For routine check-up at discharge

Answer: (B)

A complete blood count (CBC) is particularly important in newborns when there is a suspicion of sepsis or other infections. Newborns are especially vulnerable to infections due to their immature immune systems, and sepsis is a life-threatening condition that can progress rapidly. A CBC provides critical information about the newborn's white blood cell count, hemoglobin, and platelet counts, which are indicators of infection and the newborn's overall hematological status. An elevated white blood cell count, for instance, may suggest an ongoing infection, while other abnormalities in the CBC may help clinicians assess the severity of the condition and guide treatment choices.

Monitoring growth parameters, assessing metabolic conditions, or conducting routine checks at discharge generally do not require a CBC unless there is a specific clinical indication. Therefore, in the context of suspected sepsis or infections in newborns, a CBC is a valuable diagnostic tool to aid in early detection and management.