Free Care of the Extremely Low Birth Weight Neonate examination Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Care of the Extremely Low Birth Weight Neonate examination practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1During stabilization of a 720-g newborn, the team needs the fastest and most accurate measurement of heart rate. Which method best meets that need?

   1. A. Precordial auscultation
   2. B. Electrocardiography
   3. C. Peripheral pulse palpation
   4. D. Pulse oximetry

   Answer: B

   Explanation: The guideline states, "ECG provides the most rapid and accurate measurement of the newborn infant’s heart rate at birth and during resuscitation." ECG therefore best meets the measurement goal. Auscultation and pulse oximetry remain alternatives, but neither is as fast and accurate; palpation is less reliable.

   Reference: Part 5: Neonatal Resuscitation — 2025 AHA/AAP Guidelines — Assessment of Heart Rate — Recommendations for Assessment of Heart Rate in Newborn Infants, Synopsis

2. 2During an ELBW infant’s developmental care conference, the team discusses ongoing formation of myelin in the brain. Which cells directly form the insulating myelin around central nervous system axons?

   1. A. Astrocytes
   2. B. Microglia
   3. C. Oligodendrocytes
   4. D. Ependymal cells

   Answer: C

   Explanation: NICHD states, "Oligodendrocytes wrap axons in an insulating material, called myelin, that speeds up the electrical signals." The other options are real nervous-system cell types with different principal functions; they are not the cells directly forming CNS myelin sheaths.

   Reference: Brain Electrical Activity Spurs Insulation of Brain’s Wiring — Opening explanatory paragraph

3. 3At 27 weeks of pregnancy, antenatal corticosteroids are being considered to benefit a fetus at risk of ELBW delivery. Under ACOG’s standard 24–34-week recommendation, delivery should be anticipated within a maximum of how many days?

   1. A. 2 days
   2. B. 7 days
   3. C. 14 days
   4. D. 28 days

   Answer: B

   Explanation: ACOG states, "Corticosteroids may be recommended between 24 and 34 weeks of pregnancy for anyone at risk of delivery within 7 days." Seven days is the maximum anticipated interval in this recommendation. Two days is within that window but is not its outer limit; 14 and 28 days exceed it.

   Reference: Preterm Labor and Birth — When are corticosteroids given?

4. 4After explaining an ELBW infant's care plan, a clinician uses teach-back to check the parent's understanding. Which request implements this method?

   1. A. Ask the parent whether the explanation was clear
   2. B. Ask the parent to read the written plan aloud
   3. C. Ask the parent to explain the plan in their own words
   4. D. Ask the parent to rate satisfaction with the teaching

   Answer: C

   Explanation: AHRQ defines teach-back as asking patients "to state in their own words what they need to know or do about their health." The parent's own explanation reveals understanding. Yes/no reassurance, verbatim reading, and satisfaction ratings assess different things and do not establish understanding through teach-back.

   Reference: Use the Teach-Back Method: Tool 5 — Overview; Try the teach-back method

5. 5A clinician compares obstetric dating information and newborn maturity assessments for an ELBW infant. Which method should receive the greatest weight when estimating gestational age?

   1. A. Maternal physical examination
   2. B. Postnatal physical examination
   3. C. Fetal ultrasound measurements
   4. D. Postnatal neuromuscular examination

   Answer: C

   Explanation: The chapter states, "Fetal ultrasound measurements are the most powerful methods for assessing GA." The ultrasound estimate therefore receives greatest weight among these methods. Maternal examination and newborn physical or neuromuscular assessments are other ways of assessing maturity, but do not have the strength attributed to ultrasound in this source.

   Reference: Tappero and Honeyfield’s Physical Assessment of the Newborn, Seventh Edition — Gestational Age Assessment — Chapter 4, Abstract

6. 6A neonatal clinician reviews how developing neurons reach their final locations in the brain. Which cells provide the long fibers along which some neurons migrate?

   1. A. Radial glia
   2. B. Microglia
   3. C. Oligodendrocytes
   4. D. Ependymal cells

   Answer: A

   Explanation: NINDS states, "Some neurons travel, or migrate, by following the long fibers of cells called radial glia." Radial glia provide this developmental scaffold. Microglia, oligodendrocytes, and ependymal cells are other neural-support cell types and do not identify the migration scaffold described in the source.

   Reference: Brain Basics: The Life and Death of a Neuron — Neuronal Migration

7. 7A woman at 26 weeks is likely to deliver within 24 hours and receives magnesium sulfate with fetal neuroprotective intent. Which later outcome is this intervention intended to reduce?

   1. A. Necrotizing enterocolitis
   2. B. Retinopathy of prematurity
   3. C. Cerebral palsy
   4. D. Bronchopulmonary dysplasia

   Answer: C

   Explanation: ACOG states, "When given before preterm birth, magnesium sulfate may reduce the risk of cerebral palsy and problems with physical movement." Cerebral palsy is therefore the intended neuroprotective outcome. The other choices are important complications of prematurity, but they do not identify the neuroprotective benefit specified for antenatal magnesium sulfate.

   Reference: Preterm Labor and Birth — What does magnesium sulfate do?; When is magnesium sulfate given?

8. 8The mother of a newly born 25-week infant wants to provide her milk, although the infant cannot feed at the breast. When should the team facilitate initiation of colostrum expression?

   1. A. Early after the infant's birth
   2. B. After full enteral feeding is achieved
   3. C. After coordinated oral feeding develops
   4. D. At the transition to care at home

   Answer: A

   Explanation: The developmental-care standards call on maternity and ICU teams to "facilitate early hand expression of colostrum and early and frequent mechanical pumping". Expression should begin early to support milk provision despite separation and lack of oral-feeding readiness. Full enteral feeding, oral coordination, and discharge are later milestones rather than prerequisites.

   Reference: Standards, Competencies and Recommended Best Practices for Infant and Family Centered Developmental Care in the Intensive Care Unit — Page 62, Feeding competency 2.3

9. 9While explaining routine vitamin K prophylaxis for a newly admitted 800-g infant, the clinician identifies which physiologic function as the principal target of this intervention?

   1. A. Formation of red blood cells
   2. B. Production of immunoglobulins
   3. C. Production of pulmonary surfactant
   4. D. Formation of clotting factors

   Answer: D

   Explanation: CDC explains, "Without enough vitamin K, babies cannot make the substances used to form clots, called clotting factors." Vitamin K supports clotting-factor function. Red-cell formation, immunoglobulin production, and pulmonary surfactant production are other genuine infant physiologic processes, but are not the function targeted by vitamin K prophylaxis.

   Reference: Frequently Asked Questions About Vitamin K Deficiency Bleeding — Question: What is vitamin K, and how do low levels of vitamin K and vitamin K deficiency bleeding occur in babies?

10. 10When explaining an ELBW infant’s brain development, a clinician describes the production of new neurons from precursor cells. What is the name of this developmental process?

    1. A. Myelination
    2. B. Synaptogenesis
    3. C. Neuronal migration
    4. D. Neurogenesis

    Answer: D

    Explanation: NINDS defines "neurogenesis (the birth of neurons)." This is production of neurons, rather than insulation of axons, formation of synapses, or movement of neurons to their eventual locations. Those are distinct developmental processes.

    Reference: Brain Basics: The Life and Death of a Neuron — Opening discussion of neurogenesis; Neurogenesis section