Diagnostic Procedures & Interpretation Flashcards
7 cards from real Low Risk Neonatal Nurse Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Diagnostic Procedures & Interpretation flashcards as text
A transcutaneous bilirubin reading in a 40-hour-old term infant is close to the phototherapy treatment threshold. What is the most appropriate next step?
Answer: Obtain a total serum bilirubin
Transcutaneous readings are screening tools, and values near treatment thresholds must be confirmed with a serum bilirubin.
Which result is considered a passed critical congenital heart disease (CCHD) pulse oximetry screen?
Answer: SpO2 of 95% or higher in the right hand or foot, with a 3% or less difference between the two
A pass requires SpO2 of at least 95% in either extremity with no more than a 3% difference between the right hand and foot.
When is the newborn metabolic screening specimen ideally collected for a term infant?
Answer: At 24 to 48 hours of age, after feeding has been established
Collecting after 24 hours of feeding reduces false negatives for conditions such as PKU.
A direct antiglobulin (Coombs) test on an infant's cord blood is positive. What does this result indicate?
Answer: Maternal antibodies are bound to the infant's red blood cells
The direct Coombs detects antibody already attached to the infant's red cells, as in ABO or Rh incompatibility.
An infant refers on the otoacoustic emissions (OAE) hearing screen. Which statement best reflects the recommended follow-up?
Answer: Rescreen and, if still not passed, complete diagnostic audiology evaluation by 3 months of age
The 1-3-6 guideline calls for screening by 1 month, diagnosis by 3 months, and intervention by 6 months.
An asymptomatic late-preterm infant at risk for hypoglycemia has a glucose of 36 mg/dL at 2 hours of age. What is the best action?
Answer: Feed the infant and recheck the glucose in about 1 hour
An at-risk, asymptomatic infant with a low value in the first 4 hours should be fed and rechecked, with escalation if it stays low.
Where should a heel stick be performed on a newborn to reduce the risk of injury?
Answer: The lateral or medial plantar surface of the heel
Using the medial or lateral plantar surface avoids the calcaneus and the risk of bone injury and osteomyelitis.
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