The physician has told the parents that their child probably has phenylketonuria. The parents ask the nurse what special needs the child will have. What should the nurse include in the response?
The baby will most likely not develop normally for longer than six months and will die in a few years.
The baby will have a special formula and cannot eat protein foods during childhood.
Special feeding techniques are necessary until the child has surgery.
The baby will not be able to void normally and will need to be catheterized frequently.
The correct answer and explanation is :
Correct Answer:
The baby will have a special formula and cannot eat protein foods during childhood.
Explanation (300 words):
Phenylketonuria (PKU) is a rare inherited metabolic disorder caused by a deficiency of the liver enzyme phenylalanine hydroxylase, which is needed to convert phenylalanine (an amino acid found in protein-containing foods) into tyrosine. Without this enzyme, phenylalanine accumulates in the blood and brain, leading to serious neurological damage if left untreated.
PKU is usually detected through newborn screening, and early diagnosis is critical. The most important aspect of treatment is strict dietary management. A child with PKU must follow a low-phenylalanine diet, which involves avoiding high-protein foods such as meat, dairy, eggs, nuts, and soy. Instead, they are given a special phenylalanine-free formula that provides the necessary nutrients without the harmful amino acid.
The goal of this dietary intervention is to prevent phenylalanine buildup and allow the child’s brain to develop normally. With proper treatment, most children with PKU can lead healthy lives with normal intellectual development. Regular monitoring of blood phenylalanine levels is essential to ensure the diet is effectively managing the condition.
The other options are incorrect:
- Claiming the baby will die in a few years is inaccurate and outdated; with modern treatment, outcomes are generally very good.
- Special feeding techniques or surgery are not required for PKU management.
- Catheterization is not relevant to PKU, as it does not affect urinary function.
Nurses play a vital role in educating and supporting families. Parents need help understanding the lifelong nature of PKU management, the importance of adherence to dietary restrictions, and the need for regular follow-up with healthcare providers, including dietitians and metabolic specialists.