in the scientific method a tentative solution to a problem is called a what
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HESI LPN

HESI PN Nutrition Practice Exam

1. In the scientific method, a tentative solution to a problem is called a what?

Correct answer: C

Rationale: In the scientific method, a hypothesis is a tentative solution or educated guess that is tested through research. A theory (choice A) is a well-substantiated explanation based on evidence and extensive testing. A prediction (choice B) is a statement about what will happen in the future based on existing knowledge. Correlation (choice D) refers to a mutual relationship between two or more things, indicating how they may change together but not providing a solution to a problem.

2. How should a caregiver manage a child with a newly diagnosed hearing impairment?

Correct answer: B

Rationale: When a child is newly diagnosed with a hearing impairment, it is essential to refer them for audiologic evaluation and intervention. This step is crucial to accurately assess the extent of the impairment, determine appropriate interventions, and support the child's communication and development. Increasing the volume of all auditory stimuli (choice A) is not a recommended approach as it may not address the specific needs of the child and could potentially cause discomfort. Avoiding the use of assistive devices (choice C) can hinder the child's ability to communicate effectively. Encouraging frequent use of headphones (choice D) is also not advisable as it may not be suitable for managing hearing impairments and could potentially worsen the condition.

3. What is the recommended treatment for a child with a first-degree burn?

Correct answer: C

Rationale: The recommended treatment for a child with a first-degree burn is the application of cool, moist compresses. This helps in reducing pain and swelling without causing further damage to the skin. Applying ice directly to a burn can lead to frostbite and worsen the injury (Choice A). Oral antibiotics are not necessary for first-degree burns as they do not typically involve infection (Choice B). Hot packs should be avoided as they can further damage the skin and increase inflammation (Choice D).

4. What should be monitored in a child receiving chemotherapy?

Correct answer: B

Rationale: The correct answer is monitoring blood cell counts. During chemotherapy, it is crucial to monitor blood cell counts to detect potential side effects such as neutropenia (low white blood cell count) and anemia (low red blood cell count). These conditions can increase the risk of infections and fatigue. Monitoring blood glucose levels (Choice A) is not typically a primary concern in children receiving chemotherapy unless they have pre-existing conditions like diabetes. Weight gain (Choice C) and skin elasticity (Choice D) are not directly related to monitoring the effects of chemotherapy in children. Therefore, the most important parameter to monitor in a child receiving chemotherapy is blood cell counts.

5. What is an important consideration when administering medications to a child with a history of chronic renal failure?

Correct answer: B

Rationale: When administering medications to a child with chronic renal failure, it is crucial to consider adjustments in dosage due to altered drug metabolism. Children with chronic renal failure may have impaired drug excretion, leading to potential drug accumulation and toxicity. Increasing the frequency of medication administration (choice A) may not address the altered drug metabolism issue and could increase the risk of adverse effects. Avoiding all medications (choice C) is not practical or safe as some medications may be necessary for the child's health. Using only intravenous medications (choice D) is not always required and may not be the best route of administration for all medications needed.

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