A nurse is counseling a family whose child has been diagnosed with Down syndrome. Which of the following is a common characteristic of Down syndrome?

1. A

   Short stature and cognitive delays

2. B

   Long limbs and reduced muscle tone

3. C

   High IQ and exceptional physical skills

4. D

   Lack of physical abnormalities

Appeared in: NORCET 7 Prelims -2024

Explanation

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• Down syndrome, also known as Trisomy 21, is a genetic condition characterized by a well-defined set of physical and developmental features.
• Two of the most consistent and hallmark characteristics are delayed physical growth, which results in short stature, and some degree of cognitive delay or intellectual disability.
• While there is a wide range of abilities, most individuals with Down syndrome have IQs in the mild-to-moderate range of intellectual disability.
• These features, along with others like hypotonia and specific facial characteristics, are central to the clinical diagnosis.

Why Other Options Were Wrong

• Option B: This option is only partially correct. While reduced muscle tone (hypotonia) is a classic feature of Down syndrome, individuals with this condition typically have short limbs (brachymelia) and short fingers, not long limbs.
• Option C: This statement is the opposite of what is observed in Down syndrome. The condition is defined by cognitive delays, not a high IQ. Furthermore, hypotonia and joint laxity often impact the development of motor skills, rather than leading to exceptional physical abilities.
• Option D: This is factually incorrect. Down syndrome is associated with numerous distinct physical characteristics, including a flattened facial profile, up-slanting palpebral fissures, a single deep crease across the palm (simian crease), and a prominent space between the first and second toes.

Related Visual

• Visual 1: Infographic - A chart illustrating the common physical characteristics of a child with Down syndrome, highlighting facial features (flat nasal bridge, epicanthal folds), hand features (single palmar crease), and foot features (sandal gap).
• Visual 2: Diagram - A simple representation of Trisomy 21, showing the extra copy of chromosome 21, to explain the genetic basis of the condition to families.

Clinical Relevance

• Nursing practice connection: Use the key finding related to Clinical features and characteristics of Down syndrome (Trisomy 21) to guide bedside assessment, documentation, and the next nursing action.
• Nurses are central to providing family-centered care after a Down syndrome diagnosis. This includes delivering accurate information, offering emotional support, and connecting the family with vital early intervention services and community support groups.
• Early and consistent screening for associated health problems is a key nursing responsibility. This includes cardiac evaluations for congenital heart defects, hearing and vision tests, and monitoring thyroid function.
• What if? If a newborn with suspected Down syndrome also exhibits poor feeding and vomiting, the nurse should have a high index of suspicion for gastrointestinal anomalies, such as duodenal atresia, which are more common in this population and require urgent surgical evaluation.

How to Approach the Question

• Step 1: Identify the core subject of the question, which is the common characteristics of Down syndrome.
• Step 2: Recognize this as a factual recall question that requires knowledge of the classic clinical presentation of Trisomy 21.
• Step 3: Systematically evaluate each option against the known phenotype of Down syndrome.
• Step 4: Option A, 'Short stature and cognitive delays,' lists two of the most fundamental and consistent features of the syndrome.
• Step 5: Analyze the distractors. Option B is partially correct (reduced muscle tone) but incorrect about limb length. Options C and D are direct contradictions of the known features (cognitive delays and multiple physical abnormalities are typical).
• Step 6: Conclude that Option A provides the most accurate and comprehensive description among the choices.

Concept Tested & Keywords

• Concept Tested: Clinical features and characteristics of Down syndrome (Trisomy 21).
• Stem keywords: Down syndrome, counseling, common characteristic
• Lead-in keywords: Which of the following
• Clinical cues: Age/sex group narrows the expected diagnosis, intervention, or normal reference range.
• Negative lead-in flag: false

Question ID

QKYFJ2Ae8OIHW_HqE-4ACn

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