A parent brings a 2-week-old infant to a clinic for a phenylketonuria rescreening blood test. The test indicates a serum phenylalanine level of 1 mg/dL (60.5 mcmol/L). The nurse reviews this result and makes which interpretation?
It is inconclusive
it is negative
it requires rescreening at age 6 weeks.
It is positive
The Correct Answer is B
A. It is inconclusive
Explanation: A serum phenylalanine level within the normal range is considered conclusive in ruling out phenylketonuria. Inconclusive results typically occur when there are issues with the sample or testing process.
B. It is negative
Explanation:
A serum phenylalanine level of 1 mg/dL (60.5 mcmol/L) in a 2-week-old infant is within the normal range. In the context of phenylketonuria (PKU) screening, a "negative" result means that the phenylalanine levels are within the expected range, and there is no evidence of phenylketonuria.
C. It requires rescreening at age 6 weeks.
Explanation: If the initial screening result is within the normal range, rescreening at age 6 weeks may not be necessary for phenylketonuria. The timing and need for rescreening may vary based on local protocols and individual patient factors.
D. It is positive
Explanation: A positive result for phenylketonuria would indicate that the serum phenylalanine levels are elevated, suggesting a potential diagnosis of PKU. In this case, the result is negative, meaning there is no evidence of PKU.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. "Limit your caloric intake to avoid becoming overweight."
Explanation: This statement emphasizes the importance of maintaining a healthy weight through balanced nutrition and avoiding excessive caloric intake. It promotes the prevention of overweight and obesity.
B. "Tanning beds are much safer than lying in the sun."
Explanation: This statement is incorrect. Tanning beds are not safer than natural sunlight and are associated with an increased risk of skin cancer. Adolescents should be advised to protect their skin from harmful UV radiation.
C. "Share piercing needles only with close friends you trust."
Explanation: This statement is unsafe and promotes risky behavior. Sharing piercing needles can lead to the transmission of bloodborne infections such as HIV and hepatitis. The nurse should emphasize the importance of using sterile needles and avoiding risky behaviors.
D. "Your need for sleep will increase during periods of growth."
Explanation:
During periods of growth, adolescents often experience increased physical and hormonal changes, and adequate sleep is crucial for overall health and well-being. Sleep plays a vital role in growth, immune function, and cognitive performance. Adolescents should be encouraged to prioritize getting sufficient sleep for their age group.
Correct Answer is A
Explanation
A. Administer prednisone on an alternate-day schedule.
Explanation: Prednisone, a corticosteroid, is often prescribed to manage inflammation and symptoms in juvenile idiopathic arthritis. An alternate-day schedule helps minimize the risk of side effects associated with prolonged corticosteroid use.
B. Apply cool compresses for 20 minutes every hour.
Incorrect: While cool compresses can provide relief for joint pain associated with arthritis, applying them every hour may be excessive and is not a standard recommendation. It's important to use cooling measures judiciously.
C. Encourage the child to take a 45-minute nap daily.
Incorrect: While adequate rest is important for overall health, suggesting a specific duration for a nap may not be universally applicable. The child's need for rest and sleep should be based on individual factors, and a specific time frame is not a standard recommendation for juvenile idiopathic arthritis.
D. Allow the child to stay at home on days when her joints are painful.
Incorrect: While it's important to consider the child's comfort and well-being, keeping the child at home solely on days of joint pain may not be necessary. The goal is to manage symptoms effectively to allow participation in normal daily activities, including school. Restricting activities solely based on joint pain is not the typical approach to managing juvenile idiopathic arthritis.
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