Certified Pediatric Nurse (CPN)

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Pediatric Nurse Exam with our quiz. Use flashcards and multiple-choice questions to boost your knowledge and confidence. Succeed on your first try!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

If a baby is 20 inches long at birth, what would you approximate her height at 4 years?

30 inches
35 inches
40 inches
45 inches

The correct answer is: 40 inches

To determine a child's height at 4 years based on their birth length, a common rule of thumb is that a child's height generally doubles by the age of 4. In this case, if the baby is 20 inches long at birth, you would expect their height to be approximately 40 inches by the time they reach 4 years of age. This guideline aligns with growth patterns observed in early childhood, where significant growth occurs in the first few years of life, particularly during the toddler years. By using this doubling approach, the estimation effectively illustrates typical developmental progress in height during this vital growth period. Consequently, choosing 40 inches reflects an understanding of standard growth trajectories for children, highlighting the expected outcome of height progression from birth to early childhood.