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The caregiver whose newborn was newly diagnosed with phenylketonuria (PKU) has questions about the disorder. Which statement made by the nurse is correct regarding PKU?

A.

"A urine test can check the necessary lab values."

B.

"Severe cognitive deficits can result with untreated PKU."

C.

"The urine has a high concentration of phenyl pyruvic acid."

D.

"The effects of PKU are reversible."

Answer and Explanation

The Correct Answer is B

A. PKU is typically diagnosed through a blood test, not a urine test. The blood test measures phenylalanine levels, which are elevated in PKU.

B. Untreated PKU can lead to severe cognitive deficits and developmental delays due to the accumulation of phenylalanine, which is toxic to the brain. Early detection and treatment can prevent these outcomes.

C. In PKU, the urine does not typically contain high levels of phenyl pyruvic acid; it is the blood levels of phenylalanine that are elevated.

D. The effects of PKU are not reversible; however, with early and consistent treatment, such as a strict low-phenylalanine diet, the symptoms can be managed effectively.


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Related Questions

Correct Answer is B

Explanation

A. Symptoms of Epstein-Barr virus, also known as mononucleosis, can last for several weeks to months, not just 7-10 days.

B. Epstein-Barr virus is spread through saliva, so avoiding sharing drinks or utensils helps prevent transmission.

C. Bed rest is recommended, but it is not the only measure needed; monitoring and managing symptoms is also important.

D. Epstein-Barr virus is a viral infection, and antibiotics are not effective in treating viral illnesses.

Correct Answer is B

Explanation

A. While newborns need to feed frequently, particularly breastfed infants, parents do not need to wake their baby for every feeding unless advised by their healthcare provider due to specific concerns like low birth weight.

B. After birth, the newborn receives initial vaccinations, such as the hepatitis B vaccine. The next set of vaccinations is typically administered at the 1 or 2-month check-up, so no additional immunizations are needed immediately after discharge.

C. Full head control is generally achieved by around 4 months of age, not 1 month.

D. Babies typically triple their birth weight by around 12 months of age, not by 4-6 months.

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