Nursing Elites

1. A child has recently been diagnosed with Duchenne muscular dystrophy (DMD). The parents are receiving genetic counseling prior to planning another pregnancy. Which of the following statements includes the most accurate information?

• A. Duchenne is an X-linked recessive disorder, so daughters have a 50% chance of being carriers and sons a 50% chance of developing the disease.
• B. Duchenne is an X-linked recessive disorder, so both daughters and sons have a 50% chance of developing the disease.
• C. Each child has a 1 in 4 (25%) chance of developing the disorder.
• D. Sons only have a 1 in 4 (25%) chance of developing the disorder.

Correct answer: A

Rationale: The correct answer is that Duchenne is an X-linked recessive disorder, meaning the affected gene is located on one of the two X chromosomes of a female carrier. If a son receives the X chromosome bearing the gene, he will develop the disease, giving him a 50% chance of being affected. Daughters, on the other hand, are not affected by Duchenne but have a 50% chance of being carriers since they inherit one copy of the defective gene from the mother. The other X chromosome is inherited from the father, who cannot be a carrier. Therefore, choice A is accurate. Choice B is incorrect because daughters do not develop the disease, and sons have a 50% chance of developing, not both having a 50% chance. Choice C is incorrect as it does not consider the X-linked inheritance pattern of Duchenne. Choice D is inaccurate as it incorrectly states that only sons have a 25% chance of developing the disorder, omitting the carrier status of daughters.

2. Which of the following is the most appropriate example of anticipatory guidance for a 16-year-old who has been hospitalized for an ankle fracture?

• A. Changes associated with puberty
• B. Driving and staying safe
• C. The health hazards of smoking
• D. Social media influences

Correct answer: B

Rationale: Anticipatory guidance is an educational process that provides information important to a client's situation. When considering a 16-year-old who has been hospitalized for an ankle fracture, the most suitable anticipatory guidance would be regarding driving and staying safe. This guidance is crucial as it is age-appropriate and relevant to preventing future injuries. Choices A, C, and D are less pertinent in this scenario. Changes associated with puberty, health hazards of smoking, and social media influences may not directly address the immediate safety concerns of a 16-year-old with an ankle fracture.

3. Which of the following types of antipsychotic medications is most likely to produce extrapyramidal effects?

• A. Atypical antipsychotic drugs
• B. First-generation antipsychotic drugs
• C. Third-generation antipsychotic drugs
• D. Dopamine system stabilizers

Correct answer: B

Rationale: The correct answer is first-generation antipsychotic drugs. These drugs are potent antagonists of D2, D3, and D4 receptors, making them effective in treating target symptoms but also leading to numerous extrapyramidal side effects due to the blockade of D2 receptors. Atypical or second-generation antipsychotic drugs, as mentioned in choice A, are relatively weak D2 blockers, which results in a lower incidence of extrapyramidal side effects. Third-generation antipsychotic drugs, as in choice C, and dopamine system stabilizers, as in choice D, are not typically associated with significant extrapyramidal effects compared to first-generation antipsychotics.

4. A nurse is assessing a client's pulse oximetry on the surgical unit. As part of routine interventions, the nurse turns off the exam light over the client's bed. Which of the following best describes the rationale for this intervention?

• A. External light sources may cause falsely high oximetry values
• B. A bright light in the client's face may cause a low pulse oximetry
• C. External light sources may cause falsely low oximetry values
• D. The client needs a dark and quiet room to recover and maintain proper oxygenation

Correct answer: A

Rationale: When assessing a client's pulse oximetry values, the nurse should turn off any extra environmental lights that are unnecessary, including exam lights or over-bed lights. External light sources may cause falsely high oximetry values when the extra light interferes with the sensor of the oximeter, leading to inaccurate readings. Choice B is incorrect because a bright light in the client's face would not directly affect the pulse oximetry values. Choice C is incorrect as external light sources typically cause falsely high, not low, oximetry values. Choice D is incorrect as the primary reason for turning off the light is to prevent falsely high readings, not solely for the client's comfort.

5. The BRAT diet is often prescribed for patients with gastroenteritis. This acronym stands for:

• A. Bananas, Rice, Applesauce, and Toast
• B. Bread, Rice, Apricots, and Tapioca
• C. Bananas, Rolls, Apricots, and Toast
• D. Bananas, Rolls, Applesauce, and Tapioca

Correct answer: A

Rationale: The BRAT diet, which stands for Bananas, Rice, Applesauce, and Toast, is commonly recommended for patients with gastroenteritis. These easily digestible foods help firm up stools due to their low fiber content and provide essential nutrients lost during vomiting and diarrhea. Choice B is incorrect because it includes apricots, which are not part of the traditional BRAT diet. Choice C is incorrect as it includes rolls, which are not typically included in the BRAT diet. Choice D is incorrect as it includes tapioca, which is not part of the traditional BRAT diet. Therefore, the correct answer is Bananas, Rice, Applesauce, and Toast.

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