Nursing Elites

1. The parents of a 3-year-old boy with Duchenne muscular dystrophy (DMD) ask, 'How can our son have this disease? We are wondering if we should have any more children.' What information should the nurse provide these parents?

• A. This is an inherited X-linked recessive disorder, which primarily affects male children in the family.
• B. The male infant had a viral infection that went unnoticed and untreated, leading to muscle damage.
• C. The lack of the protein dystrophin in the mother can impact the XXX muscle groups of males.
• D. Spinal cord damage due to birth trauma during a breech vaginal birth weakens the muscles.

Correct answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an X-linked recessive disorder, meaning the gene mutation causing DMD is located on the X chromosome. Males have one X chromosome and one Y chromosome, so if the X chromosome they inherit from their mother carries the mutated gene, they will develop DMD. Females have two X chromosomes, so they are carriers of the gene but are usually not affected by the disease. Therefore, the nurse should explain to the parents that DMD is an inherited X-linked recessive disorder that primarily affects male children in the family.

2. When preparing a class on newborn care for expectant parents, what content should be taught concerning the newborn infant born at term gestation?

• A. Milia are white marks caused by sebaceous glands and typically resolve within 2 to 4 weeks.
• B. Meconium is the first stool and is typically dark green or black in color.
• C. Vernix caseosa is a white, cheesy substance mainly found in skin folds, providing a protective layer.
• D. Pseudostrabismus in newborns usually self-resolves without the need for intervention.

Correct answer: C

Rationale: Vernix caseosa is a white, cheesy substance that acts as a protective barrier on the skin of newborns, particularly present in skin folds. It helps to prevent dehydration and protect the delicate skin of the newborn from the amniotic fluid in utero. Educating expectant parents about the presence and function of vernix caseosa can help them understand the importance of its preservation during the immediate postnatal period. Choices A, B, and D are incorrect as they do not directly relate to the protective function of vernix caseosa in newborns. Milia are small, white bumps on the skin due to blocked oil glands, meconium is the first stool of a newborn and is typically dark green or black in color, and pseudostrabismus refers to false appearance of misalignment of the eyes, which usually resolves on its own without intervention.

3. A newborn with a yellow abdomen and chest is being assessed. What should be the nurse's initial action?

• A. Assess bilirubin level.
• B. Administer phototherapy.
• C. Encourage feeding to help reduce bilirubin levels.
• D. Perform a bilirubin test every hour.

Correct answer: A

Rationale: The correct action when assessing a newborn with a yellow abdomen and chest is to initially assess the bilirubin level. This helps determine the severity of jaundice in the newborn. Administering phototherapy (choice B) is a treatment intervention that follows the assessment. Encouraging feeding (choice C) can help with bilirubin excretion but is not the initial assessment. Performing a bilirubin test every hour (choice D) may not be necessary initially and could lead to unnecessary interventions.

4. A 6-week-old infant diagnosed with pyloric stenosis has recently developed projectile vomiting. Which assessment finding indicates to the nurse that the infant is becoming dehydrated?

• A. Weak cry without tears.
• B. Bulging fontanel.
• C. Visible peristaltic wave.
• D. Palpable mass in the right upper quadrant.

Correct answer: A

Rationale: In infants, a weak cry without tears is a classic sign of dehydration. Tears are produced by the lacrimal glands, and reduced tear production is a result of dehydration. This assessment finding should alert the nurse to the infant's dehydration status, requiring prompt intervention to prevent further complications.

5. A mother calls the school nurse to report that her preschool-aged child was bitten by a tick during a school outing last week. The mother removed the tick and flushed it down the toilet. What action should the school nurse take?

• A. Refer the mother to the Centers for Disease Control and Prevention.
• B. Report the incident to the school principal.
• C. Culture the bite site when the child returns to school.
• D. Schedule a test for Lyme disease if a rash appears.

Correct answer: D

Rationale: The correct action to take in this situation is to schedule a test for Lyme disease if a rash appears. Lyme disease can be transmitted through tick bites, and a rash is a common early symptom of the disease. Testing for Lyme disease is crucial for timely diagnosis and treatment to prevent complications. Referring the mother to the Centers for Disease Control and Prevention (Choice A) is not necessary at this point, as immediate testing for Lyme disease is more appropriate. Reporting the incident to the school principal (Choice B) is not the most direct action to address the potential health concern. Culturing the bite site when the child returns to school (Choice C) may not be as effective as scheduling a test for Lyme disease if a rash appears, as the latter is a more specific diagnostic measure for Lyme disease.

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