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. A healthcare provider is educating a parent group about the importance of immunizations. Which disease can be prevented by the varicella vaccine?

• A. Measles
• B. Mumps
• C. Rubella
• D. Chickenpox

Correct answer: D

Rationale: The varicella vaccine is specifically designed to prevent chickenpox. Measles, mumps, and rubella are prevented by different vaccines: Measles is prevented by the measles, mumps, and rubella (MMR) vaccine; Mumps is prevented by the MMR vaccine; and Rubella is also prevented by the MMR vaccine. Therefore, the correct answer is D, Chickenpox, as it is the disease prevented by the varicella vaccine.

3. The healthcare professional is preparing a presentation to a local community group about genetic disorders and the types of congenital anomalies that can occur. What would the professional include as a major congenital anomaly?

• A. Overlapping digits
• B. Polydactyly
• C. Umbilical hernia
• D. Cleft palate

Correct answer: D

Rationale: Cleft palate is considered a major congenital anomaly due to its significant impact on feeding, speech, and overall health. Overlapping digits (Option A) are a physical anomaly but not typically considered a major congenital anomaly. Polydactyly (Option B) refers to having extra fingers or toes, which is a congenital anomaly but not as major as a cleft palate. Umbilical hernia (Option C) involves a protrusion of abdominal contents through the umbilical ring but is not typically classified as a major congenital anomaly compared to cleft palate.

4. A 1-week-old infant has been in the pediatric unit for 18 hours following placement of a spica cast. The nurse observes a respiratory rate of fewer than 24 breaths/min. No other changes are noted. Because the infant is apparently well, the nurse does not report or document the slow respiratory rate. Several hours later, the infant experiences severe respiratory distress and emergency care is necessary. What should be considered if legal action is taken?

• A. Most infants have slow respirations when they are uncomfortable.
• B. The respirations of young infants are irregular, so a drop in rate is unimportant.
• C. Vital signs that are outside the expected parameters are significant and should be documented.
• D. The respiratory tract of young infants is underdeveloped, and their respiratory rate is not significant.

Correct answer: C

Rationale: In this scenario, the correct answer is C. Any vital signs outside the expected range in an infant should be documented and reported, as they may indicate a developing condition that requires prompt attention. Choice A is incorrect because slow respirations in infants should not be dismissed without assessment and documentation. Choice B is incorrect because a drop in respiratory rate in this case was significant and should have been documented. Choice D is incorrect because even though infants have underdeveloped respiratory tracts, any abnormal respiratory rate should be taken seriously and documented for monitoring and intervention if necessary.

5. A 4-year-old child is scheduled for a myringotomy. What should the nurse include in the preoperative teaching?

• A. Explain the procedure in simple terms
• B. Encourage fluid intake
• C. Allow the child to play with medical equipment
• D. Use play therapy to prepare the child

Correct answer: A

Rationale: Explaining the procedure in simple terms is essential preoperative teaching for a 4-year-old child scheduled for a myringotomy. This approach helps the child understand what will happen during the procedure, reducing anxiety and fear. Encouraging fluid intake is a good general health practice but not directly related to preoperative teaching for this procedure. Allowing the child to play with medical equipment may not be safe or appropriate as it can lead to misunderstanding or fear. Using play therapy can be beneficial but explaining the procedure in simple terms is more direct and effective for preoperative teaching in this case.

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