Nursing Elites

1. When teaching a class about trisomy 21, the instructor would identify the cause of this disorder as:

• A. nondisjunction.
• B. X-linked recessive inheritance.
• C. genomic imprinting.
• D. autosomal dominant inheritance.

Correct answer: A

Rationale: The correct answer is A: nondisjunction. Trisomy 21, also known as Down syndrome, is caused by nondisjunction, which is an error in cell division leading to an extra copy of chromosome 21. This additional genetic material alters the course of development and causes the characteristics associated with Down syndrome. Choices B, C, and D are incorrect. X-linked recessive inheritance refers to genetic disorders carried on the X chromosome, genomic imprinting involves gene expression based on parental origin, and autosomal dominant inheritance relates to disorders caused by a dominant gene on one of the non-sex chromosomes. In the case of trisomy 21, the cause is specifically related to the error in chromosome division, making nondisjunction the most appropriate answer.

2. After the nurse has completed an oral examination of a healthy 2-year-old child, the parent asks when the child should first be taken to the dentist. When is the most appropriate time in the child’s life for the nurse to suggest?

• A. Before starting school
• B. Within the next few months
• C. When the first deciduous teeth are lost
• D. At the next dental check-up for a family member

Correct answer: B

Rationale: The most appropriate time for a child to first visit the dentist is within the next few months after turning two years old. This visit allows the dentist to assess the child's oral health, provide guidance on proper oral hygiene practices, and establish a positive relationship with dental care. Choice A (Before starting school) is not as specific and timely as the recommended age of 2 years. Choice C (When the first deciduous teeth are lost) is not ideal as preventive dental visits should start earlier to establish good oral health habits. Choice D (At the next dental check-up for a family member) may delay the child's first dental visit, missing the opportunity for early preventive care and guidance.

3. A child is admitted with extensive burns. The nurse notes burns on the child’s lips and singed nasal hairs. The nurse should suspect that the child has a(n)

• A. chemical burn
• B. inhalation injury
• C. electrical burn
• D. hot-water scald

Correct answer: B

Rationale: Burns on the lips and singed nasal hairs are indicative of an inhalation injury. This suggests that the child has likely inhaled hot gases or smoke, leading to damage in the respiratory tract. Choice A, chemical burn, is incorrect because the symptoms described are more aligned with inhalation rather than direct contact with chemicals. Choice C, electrical burn, is incorrect as there are no mentions of contact with an electrical source. Choice D, hot-water scald, is also incorrect as the presentation of burns on the lips and singed nasal hairs is not characteristic of scald injuries.

4. A 3-year-old child has a sudden onset of respiratory distress. The mother denies any recent illnesses or fever. You should suspect

• A. croup
• B. epiglottitis
• C. lower respiratory infection
• D. foreign body airway obstruction

Correct answer: D

Rationale: In a 3-year-old child presenting with sudden respiratory distress without fever or recent illness, the most likely cause is a foreign body airway obstruction. Foreign body airway obstruction can lead to a sudden onset of respiratory distress as it blocks the air passage. Croup typically presents with a barking cough and stridor, often preceded by a viral illness. Epiglottitis is characterized by high fever, drooling, and a muffled voice. Lower respiratory infections usually present with symptoms such as cough, fever, and chest congestion. Therefore, in this case, the absence of recent illness or fever makes foreign body airway obstruction the most likely cause of the respiratory distress.

5. A healthcare provider is assessing a child with suspected pneumonia. What clinical manifestation is the healthcare provider likely to observe?

• A. Cough
• B. Diarrhea
• C. Rash
• D. Vomiting

Correct answer: A

Rationale: When assessing a child with suspected pneumonia, a healthcare provider is likely to observe a cough as a common clinical manifestation. Pneumonia often presents with symptoms such as cough, fever, difficulty breathing, and chest pain. Choice B, diarrhea, is not typically associated with pneumonia. Choice C, rash, is not a common clinical manifestation of pneumonia. Choice D, vomiting, is also not a typical symptom of pneumonia. Therefore, the correct answer is A: Cough.

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