Pediatric ATI Practice Exam

During a well-child visit for a 6-month-old infant, which finding indicates the need for further assessment?

1. Grabs feet and pulls them to her mouth

2. Posterior fontanel is closed

3. Legs remain crossed and extended when supine

4. Birth weight has doubled

The correct answer is: Legs remain crossed and extended when supine

The finding indicating the need for further assessment in a 6-month-old infant is when the legs remain crossed and extended while in a supine position. This presentation could suggest potential developmental delays or neurological concerns, as by this age, infants typically exhibit increased muscle tone and mobility. Most infants will demonstrate a level of motor development where they can bend their legs and kick them while lying down. In contrast, the other findings reflect typical developmental milestones for this age. Grabbing feet and pulling them to the mouth indicates normal gross motor skill progression and self-exploration. The closure of the posterior fontanel is developmentally appropriate, as it usually closes by 2 to 3 months. Doubling the birth weight is a significant growth milestone expected around 5 to 6 months of age, further affirming proper growth and nutritional status. Thus, the concern should primarily focus on the abnormal extension and crossing of the legs, which warrants further evaluation.