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
An infant has a heart rate of 90 bpm, weak irregular respirations, grimace to stimulation, some flexion of the extremities, and a pink body with blue hands and feet. What is the Apgar score?
Answer: 5
Each of the five components scores 1: heart rate under 100, weak cry, grimace, some flexion, acrocyanosis.
According to NRP target preductal SpO2 values, what is the target at 5 minutes of life?
Answer: 80% to 85%
The NRP target is 80% to 85% at 5 minutes, rising to 85% to 95% by 10 minutes.
On the New Ballard Score, a total maturity score of 30 corresponds to approximately what gestational age?
Answer: 36 weeks
Scores range from -10 to 50, and 30 corresponds to about 36 weeks.
Which umbilical cord arterial blood gas finding is most consistent with significant metabolic acidosis from perinatal asphyxia?
Answer: pH below 7.0 with base deficit of 12 mmol/L or more
A pH under 7.0 with a base deficit of 12 or more meets criteria used in evaluating hypoxic-ischemic injury.
A heel-stick hematocrit of 68% is obtained on a term infant. What is the most appropriate next step?
Answer: Confirm with a venous (central) hematocrit
Capillary samples overestimate hematocrit, so polycythemia must be confirmed on a venous specimen.
How is the Bhutani nomogram used in newborn care?
Answer: To plot total bilirubin against the infant's age in hours to assign a risk zone
The nomogram places a bilirubin value by hour of life into low, intermediate, or high risk zones.
An infant has an initial CCHD pulse oximetry reading of 92% in the right hand and foot. What should the nurse do?
Answer: Repeat the screen in 1 hour, up to two additional times
Readings of 90% to 94% are borderline and are repeated in 1 hour; a fail results if still borderline after two repeats.
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