Page 1 of 5 Chapter 1 The Newborn Infant Chapter 1 The Newborn Infant.pdf
Chapter 1: The Newborn Infant
Current Diagnosis & Treatment: Pediatrics (27th Edition)
Question 1
Which developmental finding is expected when a 2-month-old infant is pulled from supine to a sitting
position?
A. Persistent head lag throughout the maneuver
B. Full head control with no lag
C. Brief ability to hold the head upright
D. Complete head control with the head aligned with the trunk
Correct Answer: C
Rationale:
At 2 months of age, infants demonstrate improving neck muscle strength but still lack full head control.
They can briefly hold the head erect but will still exhibit some head lag when pulled to a sitting position.
Full head control typically develops around 4 months of age.
Question 2
If a newborn weighs 7 lb 6 oz at birth, what is the expected weight at 1 year of age?
A. 14¾ lb
B. 22⅛ lb
C. 29½ lb
D. Cannot be estimated
Correct Answer: B
Rationale:
Infants generally triple their birth weight by 12 months. A newborn weighing approximately 7.4 lb
would be expected to weigh about 22 lb at 1 year. Growth patterns follow predictable milestones:
doubling by 6 months and quadrupling by 2 years.
Question 3
Which parental statement most strongly suggests a developmental delay?
A. “My 9-month-old responds to his name.”
B. “My 12-month-old cannot sit independently or pull to stand.”
2/1/2026 Chapter 1 The Newborn Infant Chapter 1 The Newborn Infant.pdf
, Page 2 of 5 Chapter 1 The Newborn Infant Chapter 1 The Newborn Infant.pdf
C. “My 6-week-old smiles at me.”
D. “My 5-month-old isn’t rolling both ways yet.”
Correct Answer: B
Rationale:
By 12 months, infants should be able to pull to stand and move into a sitting position independently.
Failure to meet these gross motor milestones is concerning for developmental delay. The other
statements reflect normal developmental variations.
Question 4
Which immunizations should a healthy 2-month-old infant receive?
A. DTaP, IPV, HepB, Hib, PCV, Rotavirus
B. MMR, DTaP, PCV, IPV
C. Hib, DTaP, Rotavirus, OPV
D. Hib, MMR, IPV, Rotavirus
Correct Answer: A
Rationale:
The standard 2-month immunization schedule includes DTaP, IPV, Hepatitis B, Hib, pneumococcal
conjugate vaccine (PCV), and rotavirus. MMR is not administered until at least 12 months, and oral
polio vaccine is no longer used in the U.S.
Question 5
What should the nurse recommend for a 3-month-old infant who is exclusively breast-fed?
A. Begin vitamin D supplementation
B. Add rice cereal to formula
C. Spoon-feed rice cereal
D. Continue breastfeeding without supplements
Correct Answer: A
Rationale:
Breast milk does not supply adequate vitamin D. Exclusively breast-fed infants require vitamin D
supplementation to prevent rickets. Solid foods are not recommended until 4–6 months of age.
Question 6
At what age does an infant typically begin searching for an object hidden from view?
2/1/2026 Chapter 1 The Newborn Infant Chapter 1 The Newborn Infant.pdf
Chapter 1: The Newborn Infant
Current Diagnosis & Treatment: Pediatrics (27th Edition)
Question 1
Which developmental finding is expected when a 2-month-old infant is pulled from supine to a sitting
position?
A. Persistent head lag throughout the maneuver
B. Full head control with no lag
C. Brief ability to hold the head upright
D. Complete head control with the head aligned with the trunk
Correct Answer: C
Rationale:
At 2 months of age, infants demonstrate improving neck muscle strength but still lack full head control.
They can briefly hold the head erect but will still exhibit some head lag when pulled to a sitting position.
Full head control typically develops around 4 months of age.
Question 2
If a newborn weighs 7 lb 6 oz at birth, what is the expected weight at 1 year of age?
A. 14¾ lb
B. 22⅛ lb
C. 29½ lb
D. Cannot be estimated
Correct Answer: B
Rationale:
Infants generally triple their birth weight by 12 months. A newborn weighing approximately 7.4 lb
would be expected to weigh about 22 lb at 1 year. Growth patterns follow predictable milestones:
doubling by 6 months and quadrupling by 2 years.
Question 3
Which parental statement most strongly suggests a developmental delay?
A. “My 9-month-old responds to his name.”
B. “My 12-month-old cannot sit independently or pull to stand.”
2/1/2026 Chapter 1 The Newborn Infant Chapter 1 The Newborn Infant.pdf
, Page 2 of 5 Chapter 1 The Newborn Infant Chapter 1 The Newborn Infant.pdf
C. “My 6-week-old smiles at me.”
D. “My 5-month-old isn’t rolling both ways yet.”
Correct Answer: B
Rationale:
By 12 months, infants should be able to pull to stand and move into a sitting position independently.
Failure to meet these gross motor milestones is concerning for developmental delay. The other
statements reflect normal developmental variations.
Question 4
Which immunizations should a healthy 2-month-old infant receive?
A. DTaP, IPV, HepB, Hib, PCV, Rotavirus
B. MMR, DTaP, PCV, IPV
C. Hib, DTaP, Rotavirus, OPV
D. Hib, MMR, IPV, Rotavirus
Correct Answer: A
Rationale:
The standard 2-month immunization schedule includes DTaP, IPV, Hepatitis B, Hib, pneumococcal
conjugate vaccine (PCV), and rotavirus. MMR is not administered until at least 12 months, and oral
polio vaccine is no longer used in the U.S.
Question 5
What should the nurse recommend for a 3-month-old infant who is exclusively breast-fed?
A. Begin vitamin D supplementation
B. Add rice cereal to formula
C. Spoon-feed rice cereal
D. Continue breastfeeding without supplements
Correct Answer: A
Rationale:
Breast milk does not supply adequate vitamin D. Exclusively breast-fed infants require vitamin D
supplementation to prevent rickets. Solid foods are not recommended until 4–6 months of age.
Question 6
At what age does an infant typically begin searching for an object hidden from view?
2/1/2026 Chapter 1 The Newborn Infant Chapter 1 The Newborn Infant.pdf
