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. Choose the meaning of the word 'dilute' in the following sentence: 'Always dilute that medicine before administering it to a patient.'

Correct answer: A

Rationale: In this context, 'dilute' means to make the medicine less concentrated by adding water or another liquid. It is important to dilute certain medicines to ensure they are safe and effective for a patient's use. Choice B, 'Reduce by half,' is incorrect as diluting does not necessarily mean reducing by half; it means to make less concentrated. Choice C, 'Warm up,' is unrelated to the meaning of dilute. Choice D, 'Decontaminate,' is also incorrect as dilute refers to reducing the concentration of a substance, not removing contaminants.

3. When people masticate, what do they use?

Correct answer: C

Rationale: When people masticate, they use their gums and teeth to chew and physically break down food into smaller pieces for easier digestion. The process of mastication is essential for proper digestion in the human body. Choices A, B, and D are incorrect as fingers, eyes, ears, heels, and toes are not involved in the process of chewing or mastication.

4. Select the meaning of the word 'PRN' in the sentence: 'The nurse gave the patient a PRN medication.'

Correct answer: D

Rationale: 'PRN' is a medical abbreviation that stands for 'pro re nata,' meaning 'as needed.' In this context, the medication is given to reduce symptoms as they arise. Choice A, 'Pinpoint,' does not align with the meaning of 'PRN.' Choices B and C, 'Relocate' and 'Eradicate,' are unrelated to the concept of 'as needed' medications.

5. Which word is NOT used correctly in the sentence? 'A sentence must always begin with a capital letter, but many people forget this rule.'

Correct answer: D

Rationale: The correct answer is 'D: Capitol.' In this context, 'Capitol' is incorrect as it refers to a building where a legislative body meets. The correct term for uppercase letters is 'capital.' Choice A, 'must always,' is used correctly to emphasize the necessity of starting a sentence with a capital letter. Choice B, 'simple,' is not the incorrect word in the sentence. Choice C, 'forget,' is also used appropriately in the sentence to indicate the action of neglecting the rule.

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