Nursing Elites

1. A nurse is reviewing laboratory results for a term newborn who is 24 hours old. Which of the following results require intervention by the nurse?

• A. WBC count 10,000/mm3
• B. Platelets 180,000/mm3
• C. Hemoglobin 20g/dL
• D. Glucose 20 mg/dL

Correct answer: D

Rationale: A glucose level of 20 mg/dL is critically low for a newborn and requires immediate intervention. Hypoglycemia in a newborn can lead to serious complications such as neurologic deficits. The normal range for glucose levels in a newborn is typically 40-60 mg/dL. Choices A, B, and C represent normal or acceptable values for a term newborn and do not require immediate intervention. A WBC count of 10,000/mm3, platelets of 180,000/mm3, and hemoglobin of 20g/dL are all within normal ranges for a term newborn and do not raise immediate concerns.

2. Monozygotic (MZ) twins share _________ percent of their genes.

• A. 100
• B. 75
• C. 50
• D. 25

Correct answer: A

Rationale: Monozygotic (MZ) twins share 100% of their genes because they originate from the same fertilized egg that splits into two, resulting in identical genetic material for both twins. Choice B (75%) is incorrect as it implies a partial genetic similarity, which is not the case for MZ twins. Choice C (50%) is incorrect as it suggests half of the genes are shared, which is applicable to dizygotic (DZ) twins, not MZ. Choice D (25%) is incorrect as it indicates minimal genetic sharing, which is not true for MZ twins.

3. Does the probability of having a child with Down’s syndrome increase with the age of the parents?

• A. TRUE
• B. FALSE
• C. Sometimes
• D. Never

Correct answer: A

Rationale: The correct answer is A: TRUE. Advanced parental age, particularly maternal age, is associated with an increased risk of Down's syndrome in offspring. As parents get older, the likelihood of having a child with Down's syndrome increases. Choices B, C, and D are incorrect because the risk of Down's syndrome is known to rise with parental age, especially maternal age, due to the increased likelihood of chromosomal abnormalities during egg formation.

4. Is Duchenne muscular dystrophy a sex-linked abnormality?

• A. TRUE
• B. FALSE
• C. Sometimes
• D. Always

Correct answer: A

Rationale: The correct answer is A: TRUE. Duchenne muscular dystrophy is an X-linked recessive disorder, primarily affecting males. This is due to the inheritance of the mutated gene on the X chromosome. Choices B, C, and D are incorrect because Duchenne muscular dystrophy is specifically classified as a sex-linked disorder affecting males due to the inheritance pattern.

5. A nurse on the postpartum unit is caring for four clients. For which of the following clients should the nurse notify the provider?

• A. A client with a urinary output of 300 ml in 8 hours
• B. A client reporting abdominal cramping during breastfeeding
• C. A client receiving magnesium sulfate with absent deep tendon reflexes
• D. A client reporting lochia rubra requiring changing perineal pads every 3 hours

Correct answer: C

Rationale: The correct answer is C because in a client receiving magnesium sulfate, absent deep tendon reflexes can indicate magnesium toxicity, which requires immediate intervention to prevent serious complications. Choices A, B, and D are common postpartum occurrences that do not typically warrant immediate provider notification. A urinary output of 300 ml in 8 hours, abdominal cramping during breastfeeding, and frequent changing of perineal pads due to lochia rubra are within the expected range of postpartum recovery and do not indicate an urgent need for provider notification.

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