Which of these is a characteristic of a preterm infant?
Hypertonia.
Long toenails.
Lanugo.
Dry skin.
The Correct Answer is C
Choice A reason:
Hypertonia is not a characteristic of a preterm infant, but rather of a post-term infant. Hypertonia means increased muscle tone or stiffness, which is more common in infants who are overdue. Preterm infants have poor muscle tone and less subcutaneous fat.
Choice B reason:
Long toenails are also not a characteristic of a preterm infant but of a post-term infant. Long toenails indicate that the infant has grown beyond the expected gestational age. Preterm infants have short and brittle nails.
Choice C reason:
Lanugo is a characteristic of a preterm infant. Lanugo is fine, downy hair that covers the body of the fetus. It usually disappears by the 36th week of gestation, but preterm infants may still have it at birth.
Choice D reason:
Dry skin is not a characteristic of a preterm infant but of a post-term infant. Dry skin indicates that the infant has lost moisture and subcutaneous fat due to prolonged exposure to the amniotic fluid. Preterm infants have thin and transparent skin that may be covered by vernix caseosa, a white, cheesy substance that protects the skin from the amniotic fluid.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","D","F"]
Explanation
Choice A:
Temperature is not a finding that needs to be reported to the provider unless it is abnormally high or low. The normal temperature range for a newborn is 36.5°C to 37.5°C (97.7°F to 99.5°F).
Choice B:
Respiratory findings are not a finding that needs to be reported to the provider unless they indicate respiratory distress or infection. The normal respiratory rate for a newborn is 30 to 60 breaths per minute.
Choice C:
Serum glucose is a finding that needs to be reported to the provider, as it is higher than the normal range for a newborn. The normal serum glucose level for a newborn is usually just under 2 mmol/L (or 25 mg/dL) at birth, and it will rise to over 3 mmol/L (or 60 to 100 mg/dL) within two to three days. A serum glucose level of 130 mg/dL indicates hyperglycemia, which can have various causes and complications.
Choice D:
Hematocrit is a finding that needs to be reported to the provider, as it is lower than the normal range for a newborn. The normal hematocrit level for a newborn is 44% to 64%. A hematocrit level of 35% indicates anemia, which can have various causes and complications.
Choice E:
White blood cell count is not a finding that needs to be reported to the provider, as it is within the normal range for a newborn. The normal white blood cell count for a newborn is 9,000 to 30,000/mm³.
Choice F:
Hemoglobin is a finding that needs to be reported to the provider, as it is lower than the normal range for a newborn. The normal hemoglobin level for a newborn is 14 to 24 g/dL. A hemoglobin level of 9 g/dL indicates anemia, which can have various causes and complications.
Correct Answer is D
Explanation
Choice A reason:
This statement is incorrect because special lights are used to treat jaundice, not PKU. Jaundice is a condition that causes yellowing of the skin and eyes due to high levels of bilirubin in the blood. Bilirubin is a waste product that is normally removed by the liver. Special lights help break down bilirubin so that it can be excreted from the body.
Choice B reason:
This statement is correct because PKU is a genetic disorder that can be corrected by diet. PKU is caused by a lack of an enzyme that breaks down phenylalanine, an amino acid found in protein-rich foods. Phenylalanine can build up in the blood and cause brain damage and other health problems if not treated. A diet that is low in phenylalanine and high in a special formula can prevent these complications.
Choice C reason:
This statement is correct because sometimes the test is repeated in the doctor's office at the 2-week check-up. The PKU test is done one to three days after birth, but it may not be accurate if the baby has not had enough protein in their diet before the test. A repeat test may be needed to confirm or rule out PKU.
Choice D reason:
This statement is incorrect because the baby must take formula or breast milk after the test is done, not before. The test measures the level of phenylalanine in the blood, which will be higher if the baby has eaten protein-rich foods. The test should be done after the baby has fasted for at least two hours.
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