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

Answer and Explanation

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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Correct Answer is B

Explanation

A. Coughing spells may be triggered by dust or smoke:
Incorrect: This is a correct statement. Irritants like dust or smoke can trigger coughing spells in a child recovering from pertussis.
B. We need to maintain droplet precautions and a quiet environment for at least 2 weeks.
Correct Answer: Pertussis is highly contagious during the catarrhal and paroxysmal stages, but once the child has reached the convalescent stage (usually after 2-4 weeks of illness), the risk of spreading the infection decreases significantly. Continuing strict droplet precautions and a quiet environment for two weeks after the convalescent stage is not necessary.
C. "We need to encourage our child to drink fluids":
Incorrect: This is a correct statement. Encouraging fluid intake is important to prevent dehydration, especially during coughing spells.
D. Vomiting may occur when our child has coughing episodes:
Incorrect: This is a correct statement. Vomiting can be a common occurrence during coughing episodes in pertussis due to the forceful nature of the cough. Parents should be aware of this symptom.

A. An infectious disease of the central nervous system B. An inflammation of the brain as a result of a viral illness C. A chronic disability characterized by impaired muscle movement and posture D. A congenital condition that results in moderate to severe intellectual disabilities

Correct Answer is C

Explanation

A. An infectious disease of the central nervous system
Explanation: Cerebral palsy is not caused by an infectious disease of the central nervous system. It is a non-progressive neurological disorder that arises from brain damage, often during prenatal development.
B. An inflammation of the brain as a result of a viral illness
Explanation: While inflammation of the brain due to a viral illness can lead to neurological complications, cerebral palsy is not specifically caused by inflammation resulting from a viral illness.
C. A chronic disability characterized by impaired muscle movement and posture
Explanation:
Cerebral palsy is a chronic condition that primarily affects motor function and posture. It results from damage to the developing brain, often occurring before or during birth. The impaired muscle movement and posture associated with cerebral palsy can lead to limitations in activities of daily living and mobility.
D. A congenital condition that results in moderate to severe intellectual disabilities
Explanation: Cerebral palsy primarily affects motor function, and intellectual disabilities are not an inherent component of cerebral palsy. While some individuals with cerebral palsy may have associated cognitive impairments, it is not a defining characteristic of the disorder.

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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?

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Naxlex Comprehensive Predictor Exams

The nurse provides home care instructions to the parents of a child hospitalized with pertussis who is in the convalescent stage and is being prepared for discharge. Which statement by a parent indicates a need for further instruction?

Correct Answer is B

Explanation

The parents of a child recently diagnosed with cerebral palsy ask the nurse about the limitations of the disorder. The nurse responds by explaining that the limitations occur as a result of which pathophysiological process?

Correct Answer is C

Explanation

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