RN NCLEX Next Gen Questions Related

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A family has taken home their newborn and later received a call from the pediatrician that the PKU levels for their newborn daughter are abnormally high. Additional testing confirmed the diagnosis of phenylketonuria. The parents refuse to believe the results as no one else in their family has the disease. The nurse explains that the disease:

  • A. Is carried on recessive genes contributed by each parent.
  • B. Is caused by a recessive gene contributed by either parent.
  • C. Is cured by eliminating dietary protein for this child.
  • D. Will not impact future childbearing for the family.
Correct Answer: A

Rationale: Phenylketonuria is an autosomal recessive disorder, requiring both parents to contribute a defective gene. It is not caused by a single parent's gene, cannot be cured by diet alone (though managed by low-phenylalanine diet), and may impact future childbearing as parents are carriers.