A nurse is performing a newborn assessment and notes depressed fontanels. Which of the following is true regarding depressed fontanels in newborn assessment?
Depressed fontanelles are only seen in premature newborns.
Depressed fontanelles indicate infection.
Depressed fontanelles are a sign of dehydration.
Depressed fontanelles are a normal finding in newborns.
The Correct Answer is C
Choice A rationale
Depressed fontanelles are not exclusive to premature newborns. They can occur in both premature and full-term infants and are not an indicator of prematurity.
Choice B rationale
Depressed fontanelles do not indicate infection. Infections in newborns typically present with other symptoms such as fever, irritability, and poor feeding.
Choice C rationale
Depressed fontanelles are a sign of dehydration in newborns. When a newborn is dehydrated, the fontanelles can appear sunken due to the lack of fluid in the body.
Choice D rationale
Depressed fontanelles are not a normal finding in newborns. Normally, fontanelles should be flat or slightly curved inward. A depressed fontanelle is a clinical sign that requires further evaluation and intervention.
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Correct Answer is C
Explanation
Choice A rationale
Depressed fontanelles are not exclusive to premature newborns. They can occur in both premature and full-term infants and are not an indicator of prematurity.
Choice B rationale
Depressed fontanelles do not indicate infection. Infections in newborns typically present with other symptoms such as fever, irritability, and poor feeding.
Choice C rationale
Depressed fontanelles are a sign of dehydration in newborns. When a newborn is dehydrated, the fontanelles can appear sunken due to the lack of fluid in the body.
Choice D rationale
Depressed fontanelles are not a normal finding in newborns. Normally, fontanelles should be flat or slightly curved inward. A depressed fontanelle is a clinical sign that requires further evaluation and intervention.
Correct Answer is B
Explanation
Choice A rationale
Small for gestational age (SGA) refers to newborns whose birth weight is below the 10th percentile for their gestational age.
Choice B rationale
Appropriate for gestational age (AGA) refers to newborns whose birth weight is between the 10th and 90th percentiles for their gestational age. A newborn weighing 3350 g at 39 weeks gestation falls within this range.
Choice C rationale
Low birth weight is defined as a birth weight of less than 2500 g, which does not apply to this newborn.
Choice D rationale
Large for gestational age (LGA) refers to newborns whose birth weight is above the 90th percentile for their gestational age.