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Maternity HESI Test Bank
1. In the Ballard Gestational Age Assessment Tool, the nurse determines that a 15-month-old infant has a gestational age of 42 weeks. Based on this finding, which intervention is most important for the nurse to implement?
- A. Provide blow-by oxygen
- B. Provide a capillary blood glucose test
- C. Draw arterial blood gases
- D. Apply a pulse oximeter to the foot
Correct answer: B
Rationale: Late preterm infants, such as those with a gestational age of 42 weeks, are at higher risk for hypoglycemia due to immature metabolic regulation. Monitoring capillary blood glucose is crucial to detect and manage hypoglycemia promptly. Providing blow-by oxygen (Choice A) is not indicated for an infant at risk for hypoglycemia. Drawing arterial blood gases (Choice C) is not the primary intervention for assessing hypoglycemia. Applying a pulse oximeter to the foot (Choice D) is not directly related to monitoring blood glucose levels in this context.
2. A healthcare provider is assessing a preterm newborn who is at 32 weeks of gestation. Which of the following finding should the healthcare provider expect?
- A. Minimal arm recoil
- B. Popliteal angle of less than 90°
- C. Creases over the entire sole
- D. Sparse lanugo
Correct answer: A
Rationale: When assessing a preterm newborn at 32 weeks of gestation, healthcare providers should expect minimal arm recoil. This finding is common in preterm infants due to lower muscle tone. Choice B, a popliteal angle of less than 90°, is incorrect for this age group. Creases over the entire sole (Choice C) typically develop at term age, not at 32 weeks of gestation. Sparse lanugo (Choice D) is a normal finding in preterm infants but is not specific to those at 32 weeks of gestation.
3. Individuals with Klinefelter syndrome produce:
- A. less estrogen than normal males.
- B. less testosterone than normal males.
- C. less adenine than normal males.
- D. less thymine than normal males.
Correct answer: B
Rationale: Individuals with Klinefelter syndrome have an extra X chromosome (XXY), leading to reduced production of testosterone, the primary male sex hormone. This deficiency can result in various physical and developmental characteristics associated with the syndrome. Estrogen levels may actually be relatively elevated due to the imbalance between testosterone and estrogen. Choices C and D are incorrect as adenine and thymine are nucleotide bases found in DNA and are not related to hormone production.
4. Which of the following most accurately describes the function of genes?
- A. They regulate the development of traits.
- B. They prevent foreign particles from entering the body.
- C. They work together with lutein to influence development.
- D. They transfer oxygen from the bloodstream to other parts of the body.
Correct answer: A
Rationale: The correct answer is A: 'They regulate the development of traits.' Genes play a crucial role in regulating the development of traits by encoding proteins that control various bodily functions and characteristics. This process involves gene expression and the production of proteins that ultimately determine an individual's traits. Choice B is incorrect because genes do not have a direct role in preventing foreign particles from entering the body; this function is primarily carried out by the immune system. Choice C is incorrect as genes do not specifically work with lutein to influence development; genes operate independently to regulate trait expression. Choice D is incorrect as genes are not responsible for transferring oxygen in the bloodstream; this function is carried out by red blood cells and hemoglobin.
5. What causes cystic fibrosis?
- A. Sex-linked abnormality.
- B. Abnormality in the 21st pair of chromosomes.
- C. Recessive gene.
- D. Single segment found only on the Y chromosome.
Correct answer: C
Rationale: Cystic fibrosis is a genetic disorder caused by inheriting two copies of a recessive gene, one from each parent. This means that both parents must carry at least one copy of the faulty gene for a child to inherit the condition. Choice A is incorrect because cystic fibrosis is not linked to the sex chromosomes. Choice B is incorrect as cystic fibrosis is not caused by an abnormality in the 21st pair of chromosomes but by a specific gene mutation. Choice D is also incorrect as cystic fibrosis is not related to the Y chromosome, which is specific to males.
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