what does parameter mean
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Nursing Elites

HESI A2

HESI A2 Practice Vocabulary

1. What does 'Parameter' mean?

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. A patient who is lethargic may seem _______

Correct answer: B

Rationale: The correct answer is B: 'Exhausted.' Lethargic describes a state of feeling sluggish or lacking energy, which aligns with being exhausted. Choice A, 'Energetic,' is the opposite of lethargic. Choice C, 'Restless,' implies a different state of agitation than lethargy. Choice D, 'Hyperactive,' describes excessive activity, which contrasts with the lethargic state.

3. When a symptom is exacerbated, it is ___________.

Correct answer: D

Rationale: When a symptom is exacerbated, it means that it is made worse or intensified beyond its usual level of severity. This can lead to increased discomfort, pain, or other negative effects associated with that particular symptom. Choice A is incorrect because exacerbation does not imply that the symptom is not dangerous. Choice B is incorrect as exacerbation does not necessarily mean disfiguring. Choice C is incorrect as exacerbation does not always specifically refer to pain, but to any worsening of a symptom.

4. An alarm that is strident is ___________.

Correct answer: A

Rationale: A strident alarm is loud, harsh, and piercing. The word 'shrill' specifically denotes a high-pitched and piercing sound, which aligns well with the characteristics of a strident alarm. Therefore, 'shrill' is the most suitable answer in this context. Choices B, C, and D are incorrect because a strident alarm is not quiet (muted), unchanging (constant), or deep and full (resonant), but rather loud and harsh.

5. What does 'Flushed' refer to?

Correct answer: B

Rationale: The correct answer is B: 'Reddened or ruddy appearance.' When someone is flushed, it means they have a red or ruddy complexion, often due to embarrassment, anger, or a physical reaction. Choices A, C, and D are incorrect because 'flushed' specifically refers to a red or ruddy appearance, not swelling, discoloration, or paleness.

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