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 an infant has had corrective surgery for hypertrophic pyloric stenosis (HPS), what should the nurse teach a parent to do immediately after a feeding to limit vomiting?

• A. Rock the infant.
• B. Place the infant in an infant seat.
• C. Place the infant flat on the right side.
• D. Keep the infant awake with sensory stimulation.

Correct answer: B

Rationale: Correct Answer: B. Placing the infant in an infant seat is essential after feeding to help keep the head elevated and reduce the risk of vomiting. This position helps prevent regurgitation of formula or milk. Rocking the infant (Choice A) is incorrect because it may exacerbate vomiting due to the movement. Placing the infant flat on the right side (Choice C) is incorrect as it does not promote proper digestion and can increase the risk of vomiting. Keeping the infant awake with sensory stimulation (Choice D) is incorrect as it does not directly address the physiological need to reduce vomiting after feeding.

3. A healthcare provider is assessing a 3-month-old infant with suspected pyloric stenosis. What clinical manifestation is the healthcare provider likely to observe?

• A. Projectile vomiting
• B. Diarrhea
• C. Constipation
• D. Abdominal distension

Correct answer: A

Rationale: Projectile vomiting is a classic clinical manifestation of pyloric stenosis in infants. This occurs due to the narrowing of the pyloric sphincter, leading to the forceful expulsion of gastric contents in a projectile manner. Diarrhea (choice B) is not typically associated with pyloric stenosis. Constipation (choice C) is also not a common symptom of this condition. Abdominal distension (choice D) may occur in pyloric stenosis but is not as specific or characteristic as projectile vomiting in diagnosing this condition.

4. Which of the following statements regarding 2-rescuer child CPR is correct?

• A. The chest should not be allowed to fully recoil in between compressions as this may impede venous return.
• B. Compress the chest with one or two hands to a depth equal to one-half to one third the diameter of the chest.
• C. The chest should be compressed with one hand and a compression to ventilation ratio of 30:2 should be delivered.
• D. A compression to ventilation ratio of 15:2 should be delivered without pauses in compressions to deliver ventilations.

Correct answer: B

Rationale: The correct statement regarding 2-rescuer child CPR is to compress the chest with one or two hands to a depth equal to one-half to one third the diameter of the chest. This technique ensures effective chest compressions without causing excessive damage to the chest. Choice A is incorrect because allowing the chest to fully recoil between compressions is essential to facilitate optimal blood flow during CPR. Choice C is incorrect as it describes a compression to ventilation ratio of 30:2, which is not the recommended ratio for child CPR. Choice D is incorrect as a compression to ventilation ratio of 15:2 is not standard practice for child CPR, and pauses in compressions are necessary to provide ventilations effectively.

5. A child with acute lymphoblastic leukemia (ALL) is hospitalized for treatment. What is the priority nursing intervention?

• A. Administering antibiotics
• B. Preventing infection
• C. Providing nutritional support
• D. Managing pain

Correct answer: B

Rationale: The priority nursing intervention for a child hospitalized for acute lymphoblastic leukemia (ALL) is preventing infection. Children with ALL have compromised immune systems, making them highly vulnerable to infections. Preventing infections through strict aseptic techniques, isolation precautions, and proper hygiene is crucial to safeguard the child's health. Administering antibiotics (choice A) may be necessary if an infection occurs, but the primary focus should be on infection prevention. While providing nutritional support (choice C) is important, preventing infection takes precedence due to its direct impact on the child's survival. Managing pain (choice D) is essential for the child's comfort but is not the priority over preventing life-threatening infections in this scenario.

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