PKU
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Questions and Answers

What is the incidence of PKU?

  • 1 in 1,000,000 births
  • 1 in 1,000 births
  • 1 in 100,000 births
  • 1 in 10,000 births (correct)

What causes PKU?

  • Deficiency of the hepatic enzyme phenylalanine hydroxylase (correct)
  • High levels of phenylalanine in the body
  • A genetic mutation in the PKU gene
  • Exposure to environmental toxins

How is PKU mostly detected?

  • By screening newborns for increased plasma levels of phenylalanine (correct)
  • By conducting genetic testing
  • By detecting phenyl pyruvate in urine
  • By observing physical symptoms in the patient

What are some symptoms of untreated PKU?

<p>Skin rashes and lighter skin and hair color (A)</p> Signup and view all the answers

What is the treatment for PKU?

<p>A special low-phenylalanine diet, medication, or supplements (A)</p> Signup and view all the answers

What medications are used to treat PKU?

<p>Sapropterin dihydrochloride and Pegvaliase (C)</p> Signup and view all the answers

How can PKU be passed to children?

<p>By two carrier parents who don't know they have the changed gene (B)</p> Signup and view all the answers

Study Notes

  • PKU is a metabolic disorder caused by a deficiency of the hepatic enzyme phenylalanine hydroxylase.
  • It is inherited in an autosomal recessive pattern and has an incidence of 1 in 10,000 births.
  • PKU causes an accumulation of phenylalanine and its metabolites in the body, which can lead to various clinical and biochemical manifestations.
  • Symptoms of untreated PKU can include neurological problems, skin rashes, lighter skin and hair color, small head size, hyperactivity, intellectual disability, delayed development, and mental health disorders.
  • PKU is mostly detected by screening newborns for increased plasma levels of phenylalanine.
  • Diagnosis can also be confirmed by detecting phenyl pyruvate in urine.
  • Treatment for PKU is lifelong and may include a special low-phenylalanine diet, medication, or supplements.
  • Sapropterin dihydrochloride and Pegvaliase are two medications used to treat PKU.
  • Prenatal diagnosis of PKU can be done using cultured amniotic cells.
  • PKU can be passed to children by two carrier parents who don't know they have the changed gene.

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Description

Test your knowledge on Phenylketonuria (PKU), a rare metabolic disorder that affects approximately 1 in 10,000 newborns. This quiz will cover the causes, symptoms, diagnosis, and treatment of PKU, as well as the importance of prenatal screening and genetic counseling. Whether you're a healthcare professional or just interested in learning more about this condition, this quiz will challenge your understanding of PKU and its impact on patients and families.

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