What is the normal head circumference for a newborn?

What is the normal head circumference for a newborn?

• A. A 28-32 cm
• B. 32-37 cm
• C. 38-40 cm
• D. 40-44 cm

Answer: (B)

Head circumference in newborns reflects brain growth and skull development, so it’s tracked as a key part of the initial physical exam. The normal range is about 32 to 37 cm, with an average around 34 cm. To measure it, use a non-stretch tape placed around the largest part of the head: across the forehead just above the eyebrows, and around the occipital prominence in the back, with the head in a neutral position. The tape should be snug but not compressing the skin, and you’ll typically record the measurement to the nearest 0.5 cm, repeating if needed and using the average. This range is useful because measurements below 32 cm could indicate microcephaly or a measurement error, while measurements above 37 cm could indicate macrocephaly or other conditions. Within this range, values are generally consistent with typical newborn brain growth.

Head circumference in newborns reflects brain growth and skull development, so it’s tracked as a key part of the initial physical exam. The normal range is about 32 to 37 cm, with an average around 34 cm.

To measure it, use a non-stretch tape placed around the largest part of the head: across the forehead just above the eyebrows, and around the occipital prominence in the back, with the head in a neutral position. The tape should be snug but not compressing the skin, and you’ll typically record the measurement to the nearest 0.5 cm, repeating if needed and using the average.

This range is useful because measurements below 32 cm could indicate microcephaly or a measurement error, while measurements above 37 cm could indicate macrocephaly or other conditions. Within this range, values are generally consistent with typical newborn brain growth.