Chapter 31 OB TEST BANK

CHAPTER 31 OB TEST BANK EXAM WITH 100% CORRECT ANSWERS 1. Which statement best describes the infants physical development? a. Anterior fontanel closes by age 6 to 10 months. b. Binocularity is well established by age 8 months. c. Birth weight doubles by age 5 months and triples by age 1 year. d. Maternal iron stores persist during the first 12 months of life. - correct answer ANS: C Growth is very rapid during the first year of life. The birth weight approximately doubles by age 5 to 6 months and triples by age 1 year. The anterior fontanel closes at age 12 to 18 months. Binocularity is not established until age 15 months. Maternal iron stores are usually depleted by age 6 months 2. The nurse is assessing a 6-month-old healthy infant who weighed 7 pounds at birth. The nurse should expect the infant to now weigh approximately: a. 10 pounds.. b. 15 pounds. c. 20 pounds d. 25 pounds. - correct answer ANS: B Birth weight doubles at about age 5 to 6 months. At 6 months, an infant who weighed 7 pounds at birth would weigh approximately 15 pounds. Ten pounds is too little; the infant would have gone from the 50th percentile at birth to below the 5th percentile. Twenty pounds or more is too much; the infant would have tripled the birth weight at 6 months. 3. The nurse is doing a routine assessment on a 14-month-old infant and notes that the anterior fontanel is closed. This should be interpreted as: a. A normal finding. b. A questionable findingthe infant should be rechecked in 1 month. c. An abnormal findingindicates the need for immediate referral to a practitioner. d. An abnormal findingindicates the need for developmental assessment. - correct answer ANS: A Because the anterior fontanel normally closes between ages 12 and 18 months, this is a normal finding, and no further intervention is required. 4. By what age does the posterior fontanel usually close? a. 6 to 8 weeks b. 10 to 12 weeks c. 4 to 6 months d. 8 to 10 months - correct answer ANS: A The bones surrounding the posterior fontanel fuse and close by age 6 to 8 weeks. Ten weeks or longer is too late 5. The parents of a 9-month-old infant tell the nurse that they have noticed foods such as peas and corn are not completely digested and can be seen in their infants stool. The nurse bases her explanation on knowing that: a. Children should not be given fibrous foods until the digestive tract matures at age 4 years. b. The infant should not be given any solid foods until this digestive problem is resolved. c. This is abnormal and requires further investigation. d. This is normal because of the immaturity of digestive processes at this age. - correct answer ANS: D The immaturity of the digestive tract is evident in the appearance of the stools. Solid foods are passed incompletely broken down in the feces. An excess quantity of fiber predisposes the child to large, bulky stools. This is a normal part of the maturational process, and no further investigation is necessary. 6. A 3-month-old infant, born at 38 weeks of gestation, will hold a rattle if it is put in her hands; however, she will not voluntarily grasp it. The nurse should interpret this as: a. Normal development. b. Significant developmental lag. c. Slightly delayed development caused by prematurity. d. Suggestive of a neurologic disorder such as cerebral palsy. - correct answer ANS: A This indicates normal development. Reflexive grasping occurs during the first 2 to 3 months and then gradually becomes voluntary. No evidence of developmental lag, delayed development, or neurologic dysfunction is present. 7. In terms of fine motor development, the infant of 7 months should be able to: a. Transfer objects from one hand to the other. b. Use thumb and index finger in a crude pincer grasp. c. Hold a crayon and make a mark on paper. d. Release cubes into a cup - correct answer ANS: A By age 7 months, infants can transfer objects from one hand to the other, crossing the midline. The crude pincer grasp is apparent at about age 9 months. The infant can scribble spontaneously at age 15 months. At age 12 months, the infant can release cubes into a cup. 8. In terms of gross motor development, what would the nurse expect a 5-month-old infant to do? a. Roll from abdomen to back. b. Roll from back to abdomen. c. Sit erect without support. d. Move from prone to sitting position. - correct answer ANS: A Rolling from abdomen to back is developmentally appropriate for a 5-month-old infant. The ability to roll from back to abdomen usually occurs at 6 months old. Sitting erect without support is a developmental milestone usually achieved by 8 months. The 10-month-old infant can usually move from a prone to a sitting position. 9. At which age can most infants sit steadily unsupported? a. 4 months b. 6 months c. 8 months d. 10 months - correct answer ANS: C Sitting erect without support is a developmental milestone usually achieved by 8 months. At age 4 months, an infant can sit with support. At age 6 months, the infant will maintain a sitting position if propped. By 10 months, the infant can maneuver from a prone to a sitting position 10. By what age should the nurse expect that an infant will be able to pull to a standing position? a. 6 months b. 8 months c. 9 months d. 11 to 12 months - correct answer ANS: C Most infants can pull themselves to a standing position at age 9 months. Any infant who cannot pull to a standing position by age 11 to 12 months should be referred for further evaluation for developmental dysplasia of the hip. At 6 months, the infant has just obtained coordination of arms and legs. By age 8 months, infants can bear full weight on their legs.