A nurse is collecting a blood phenylketonuria (PKU) test for a newborn prior to discharge.The newborn's guardian asks the nurse what a positive PKU test would mean.
Which of the following statements should the nurse make?
A positive finding indicates the inability to metabolize galactose.
A positive finding indicates the infant will have a slow metabolism.
A positive finding indicates an inability to metabolize certain amino acids.
A positive finding indicates an increased risk for neurological anomalies.
The Correct Answer is C
Choice A rationale
A positive finding for galactosemia, not PKU, indicates the inability to metabolize galactose. Galactosemia is a different metabolic disorder that requires a separate dietary intervention.
Choice B rationale
A positive PKU test does not indicate slow metabolism. Instead, it signifies the inability to metabolize phenylalanine, an amino acid.
Choice C rationale
Phenylketonuria (PKU) is a genetic disorder that leads to the inability to break down the amino acid phenylalanine. Without proper management, it can accumulate in the body and cause brain damage and other health issues.
Choice D rationale
A positive PKU test is not directly linked to an increased risk for neurological anomalies in general. The specific issue in PKU is the inability to metabolize certain amino acids, primarily phenylalanine, which can cause neurological damage if untreated. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Giving glucose water after feedings is not recommended for newborns undergoing phototherapy. Breastfeeding or formula feeding should be continued to provide adequate nutrition and hydration.
Choice B rationale
Instructing the client to avoid breastfeeding during treatment is not necessary. Breastfeeding should continue to promote bonding, provide nutrition, and help with the infant's hydration and bilirubin excretion.
Choice C rationale
Monitoring intake and output is crucial for a newborn receiving phototherapy to ensure proper hydration and assess the effectiveness of the treatment in lowering bilirubin levels.
Choice D rationale
Applying lotions and ointments throughout the treatment is not recommended, as they can interfere with the effectiveness of phototherapy. The skin should be clean and dry to maximize exposure to the phototherapy light.
Correct Answer is A
Explanation
Choice A rationale
Checking fetal heart tones is the priority to assess the well-being of the fetus, especially in breech presentation and after the membranes have ruptured.
Choice B rationale
Preparing for a cesarean birth is important but follows the assessment of fetal heart tones and other immediate measures.
Choice C rationale
Checking the color, amount, and odor of the fluid is important, but ensuring fetal heart tones comes first to monitor any distress.
Choice D rationale
Performing a Nitrazine test to assess for rupture of membranes is redundant once the client reports her water has broken.
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