Which physical signs could indicate a risk for hyperbilirubinemia?

Choice A reason:

This is a normal WBC for a newborn. According to MedlinePlus, the normal amount of white blood cells (WBCs) found in the bloodstream of a newborn infant is between 4,500 and 10,000 per microliter of blood. The reference ranges for WBC count established by Mayo Medical Laboratories for infants from birth to 2 years are as follows:.

• Birth: 9.0 to 30.0 x 10 9 /L.

• 1 to 7 days: 9.4 to 34.0 x 10 9 /L.

• 8 to 14 days: 5.0 to 21.0 x 10 9 /L.

• 15 days to 1 month: 5.0 to 20.0 x 10 9 /L.

• 2 to 5 months: 5.0 to 15.0 x 10 9 /L. Therefore, a newborn's WBC of 15,000 is within the normal range and does not indicate any problem.

Choice B reason:

You must call the doctor. This is not a correct answer because there is no need to call the doctor for a normal WBC in a newborn. Calling the doctor unnecessarily may cause anxiety and a waste of time and resources.

Choice C reason:

This indicates a severe infection. This is not a correct answer because a WBC of 15,000 does not necessarily indicate a severe infection in a newborn. A high WBC, also called leukocytosis, may be related to infection, but it can also be caused by other factors such as stress, inflammation, trauma, medication, or blood disorders. Moreover, the type and severity of infection can be better assessed by looking at the differential count of the different types of white blood cells (neutrophils, eosinophils, basophils, monocytes, and lymphocytes) and other signs and symptoms.

Choice D reason:

This is a lab error. This is not a correct answer because a WBC of 15,000 is not likely to be a lab error in a newborn. Lab errors can occur due to improper collection, handling, or analysis of blood samples, but they are rare and usually detected by quality control measures. A WBC of 15,000 is within the normal range for a newborn and does not require repeating the test unless there is a strong suspicion of an error or an inconsistency with other results or clinical findings.

Choice A reason:

Preterm birth is a major risk factor for neonatal sepsis, especially early-onset sepsis. Preterm babies have immature immune systems and lack antibodies to protect them against certain bacteria.

Choice B reason:

Cesarean birth is not a risk factor for neonatal sepsis by itself, unless it is associated with other factors such as prolonged rupture of membranes, maternal infection or chorioamnionitis.

Choice C reason:

Precipitous delivery is a risk factor for neonatal sepsis, especially early-onset sepsis. Precipitous delivery can cause fetal distress, hypoxia, acidosis and increased susceptibility to infection.

Choice D reason:

Frequent vaginal exams are a risk factor for neonatal sepsis, especially early-onset sepsis. Frequent vaginal exams can introduce bacteria into the amniotic fluid and increase the risk of ascending infection.

Choice E reason:

Mother has GBS infection is a risk factor for neonatal sepsis, especially early-onset sepsis. GBS (group B streptococcus) is the most common cause of early-onset neonatal sepsis and can be transmitted from the mother to the baby during labor and delivery.