current diagnosis and treatment pediatrics 24th edition hay levin

Chapter 1 The Newborn Infant 1. Which milestone is developmentally appropriate for a 2-month-old infant when the nurse pulls the infant to a sitting position? a. Head lag is present when the infants trunk is lifted. b. The infant is able to support the head when the trunk is lifted. c. The infant is briefly able to hold the head erect. d. The infant is fully able to support and hold the head in a straight line. ANS: C A 2-month-old infant is able to hold the head erect only briefly and continues to have some head lag. It is not until 4 months of age that the infant can keep his or her head in a straight line when pulled to a sitting position. 2. Approximately what should a newborn weigh at 1 year of age if the newborns birth weight was 7 pounds 6 ounces? a. 14 3/4 pounds b. 22 1/8 pounds c. 29 1/2 pounds d. Unable to estimate weight at 1 year ANS: B An infant triples the birth weight by 1 year of age. An infant doubles the birth weight by 6 months of age. An infant quadruples the birth weight by 2 years of age. Weight at 6 months, 1 year, and 2 years of age can be estimated from the birth weight.