A term neonate has a head circumference of 35 cm at birth. What is the expected head circumference at 6 months of age?
- A 40 cm
- B 42 cm
- C 44 cm ✓
- D 46 cm
Correct answer: C. 44 cm
Explanation
Head circumference grows by approximately 2 cm per month for the first 3 months and 1 cm per month for the next 3 months. From 35 cm at birth, the increase is 6 cm in the first 3 months and 3 cm in the next 3 months, totaling 9 cm. Thus, expected head circumference at 6 months is 44 cm.
Reference: Nelson Textbook of Pediatrics, 21st ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.