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Question

At what age should a lateral neck radiograph be done for a child with Downs syndrome to rule out atlanto-occipital subluxation?

The correct answer is
At 3 years

Down Syndrome Screening for Atlanto-Occipital Subluxation

Children with Down syndrome have an increased risk of atlanto-occipital subluxation, a condition where the bones of the upper neck are misaligned. This instability can potentially lead to serious neurological complications if not identified.

Radiograph Guidelines for Instability

To screen for this potential instability, a lateral neck radiograph is recommended. Current medical guidelines and practices often suggest performing this initial screening at a specific age to assess for significant bony abnormalities or instability before a child becomes significantly more mobile.

  • A lateral neck radiograph is a standard imaging technique to visualize the alignment of the cervical spine.
  • The aim is to detect potential atlanto-occipital subluxation or other upper cervical spine abnormalities common in Down syndrome.
  • Screening is typically performed before the child engages in activities that could put stress on an unstable neck.

Based on common clinical recommendations for screening atlanto-occipital subluxation in children with Down syndrome, the lateral neck radiograph is often performed around the age of 3 years. This timing allows for assessment before increased physical activity associated with toddlerhood.

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Important Questions from Congenital Disorders

  1. To prevent recurrence, expectant mothers with a previous fetus with neural tube defect should receive folic acid daily at the dose of :
  2. Consider the following statements regarding non-invasive prenatal screening (NIPS) for screening high risk pregnancies for aneuploidies: 

    1. It is carried out on maternal blood. 

    2. It is done before 10 weeks gestation. 

    3. It has a negative predictive value of about 98%. 

    4. Invasive testing is needed for confirmation of a positive test. 

    Which of the statements given above are correct?

  3. The risk of Down syndrome is 100% in the offspring, if:
  4. Which of the following are examples of genomic imprinting? 

    1. Angelman syndrome 

    2. Williams syndrome 

    3. Prader-Willi syndrome 

    4. DiGeorge syndrome 

    Select the correct answer using the code given below:

  5. To reduce the risk of neural tube defects in the baby, which of the following are recommended?
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