Certified Pediatric Nurse (CPN)

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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!

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If Emily was 22 inches at birth and now measures 44 inches, how old is she most likely?

1 year old
2 years old
3 years old
4 years old

The correct answer is: 4 years old

To determine Emily's age based on her height, it's informative to understand the growth patterns of children in the early years of life. At birth, the average length for infants is typically around 19 to 21 inches. By the age of 1 year, children generally double their birth length, reaching approximately 28 to 30 inches. As they continue to grow, by the age of 2 years, many children are about 34 to 36 inches tall, and by age 3, they commonly reach around 36 to 40 inches. Finally, at age 4, children typically reach heights between 40 to 44 inches or sometimes even taller. Since Emily was 22 inches at birth and now measures 44 inches, this significant increase aligns with the expected growth chart data. The growth from 22 inches to 44 inches indicates that she has likely reached the age where children often measure around 40 to 44 inches, which corresponds most accurately to being 4 years old. This understanding of typical growth progression in children’s heights supports identifying 4 years as the most likely age for Emily.