HESI A2
HESI A2 Practice Vocabulary
1. What does 'Parameter' mean?
- A. A constant variable
- B. A characteristic or constant factor
- C. A measurable limit
- D. A calculated risk
Correct answer: B
Rationale: The correct answer is B: 'A characteristic or constant factor.' In the context of systems or experiments, a parameter is a fixed element that influences the behavior or outcome. It is not a variable like in choice A, which can change. Choice C, 'A measurable limit,' is incorrect as a parameter is not necessarily a physical limit but a defining factor. Choice D, 'A calculated risk,' is unrelated to the definition of a parameter.
2. What does the quoted word 'equilibrium' mean in the following sentence?
- A. Ability to speak
- B. Sense of taste
- C. Sense of balance
- D. Ability to swallow
Correct answer: C
Rationale: The correct answer is C: 'Sense of balance.' In the sentence provided, 'equilibrium' refers to a state of physical balance or stability. The client lost his balance when he woke up, indicating a loss of stability or equilibrium. Choices A, B, and D are incorrect because 'equilibrium' specifically refers to balance, not the ability to speak, sense of taste, or ability to swallow.
3. Based on the principles of asepsis, the nurse should consider a sterile packet below waist level to be _____.
- A. contaminated
- B. sterilized
- C. clean
- D. untouched
Correct answer: A
Rationale: In aseptic techniques, maintaining the sterility of items is crucial. Placing a sterile packet below waist level exposes it to potential contamination from non-sterile surfaces or objects. Therefore, the correct term to describe the sterile packet in this situation is 'contaminated.' 'Sterilized' (choice B) is incorrect as it implies the packet has undergone a sterilization process, which may not be the case if it is now considered contaminated. 'Clean' (choice C) is incorrect because although the packet was initially sterile, placing it below waist level compromises its cleanliness. 'Untouched' (choice D) is incorrect as the packet has been touched or exposed to non-sterile areas, leading to potential contamination.
4. The abbreviation LBW on an infant’s chart refers to the baby’s ___________.
- A. genetic makeup
- B. feeding schedule
- C. Babinski response
- D. weight at birth
Correct answer: D
Rationale: The abbreviation LBW stands for 'Low Birth Weight,' which specifically refers to the weight of the infant at birth. It is an important indicator of the baby's health and development, with low birth weight infants often requiring special medical attention and care. Choices A, B, and C are incorrect because LBW does not relate to genetic makeup, feeding schedule, or Babinski response; rather, it is a term used to describe infants who are born weighing less than normal, which can have implications for their health and require additional monitoring and support.
5. Which sentence correctly uses a semicolon?
- A. I have a big test tomorrow; I can't go out tonight.
- B. She likes apples; oranges are her favorite.
- C. I went to the store; and I bought some milk.
- D. I like apples, but oranges are better.
Correct answer: B
Rationale: The sentence 'She likes apples; oranges are her favorite.' correctly uses a semicolon to connect two related independent clauses. The semicolon is used to separate two closely related ideas in a way that is stronger than a comma but not as final as a period. Choice A is incorrect because the conjunction 'but' is missing before 'I can't go out tonight.' Choice C is incorrect as the conjunction 'and' after the semicolon is unnecessary and disrupts the flow of the sentence. Choice D is incorrect because the semicolon is incorrectly placed before 'oranges are better,' where a comma or period would be more appropriate.
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