Nursing Elites

1. Narrow therapeutic index medications:

• A. are drug formulations with limited pharmacokinetic variability.
• B. have limited value and require no monitoring of blood levels.
• C. have less than a twofold difference in minimum toxic levels and minimum effective concentration in the blood
• D. have limited potency and side effects.

Correct answer: C

Rationale: The therapeutic index is the ratio between the median lethal dose and median effective dose of a drug, indicating the safety margin. Narrow therapeutic index medications have a small difference between minimum toxic levels and minimum effective concentration in the blood, making them high-risk drugs that require close monitoring to avoid toxicity. Choice A is incorrect because pharmacokinetics refer to drug absorption, distribution, metabolism, and elimination, not the therapeutic index. Choice B is incorrect because narrow therapeutic index drugs necessitate monitoring due to their narrow margin of safety. Choice D is incorrect because narrow therapeutic index drugs do not necessarily have limited potency but are characterized by a small window between efficacy and toxicity.

2. The client with schizophrenia has become disruptive and requires seclusion. Which staff member can institute seclusion?

• A. The security guard
• B. The registered nurse
• C. The licensed practical nurse
• D. The nursing assistant

Correct answer: B

Rationale: The registered nurse is the correct choice to institute seclusion for a client with schizophrenia. In healthcare settings, only a registered nurse or a physician can legally initiate seclusion. The security guard, licensed practical nurse, and nursing assistant do not have the authority to carry out this action. Therefore, options A, C, and D are incorrect.

3. Which of the following attitudes is essential in a nurse who assists clients during crises?

• A. viewing crisis intervention as the first step in solving bigger problems
• B. wanting to help clients solve all problems identified
• C. taking an active role in guiding the process
• D. feeling that work requires identification with all of a client's problems

Correct answer: A

Rationale: Viewing crisis intervention as the first step in solving bigger problems is essential in a nurse who assists clients during crises. This approach focuses on addressing the immediate crisis first, which can potentially prevent the escalation of bigger problems. Wanting to help clients solve all problems identified (Choice B) may not be feasible or necessary during a crisis situation where immediate intervention is crucial. Taking an active role in guiding the process (Choice C) is important, but the primary focus should be on crisis intervention. Feeling that work requires identification with all of a client's problems (Choice D) may lead to a lack of focus on the immediate crisis at hand.

4. Fat emulsions are frequently administered as a part of total parenteral nutrition. Which statement is true regarding fat emulsions?

• A. They have a high energy-to-fluid-volume ratio.
• B. Even though hypertonic, they are well tolerated.
• C. They are a basic solution due to the addition of sodium hydroxide (NaOH).
• D. The pH is alkaline, making them compatible with most medications.

Correct answer: A

Rationale: The correct statement is that fat emulsions have a high energy-to-fluid-volume ratio. Fat emulsions are formulated in 10%, 20%, and 30% solutions and supply 1.1, 2, and 3 kilocalories, respectively, for each milliliter. In comparison, a milliliter of 5% dextrose only supplies 0.17 kilocalories. Choices B, C, and D are incorrect. Choice B is false because fat emulsions are essentially pH neutral and isotonic, not hypertonic. Choice C is incorrect because fat emulsions are not basic solutions; they are essentially pH neutral. Choice D is incorrect as fat emulsions are not alkaline; they are pH neutral, making them compatible with most medications.

5. A nurse provides information about feeding to the mother of a 6-month-old infant. Which statement by the mother indicates an understanding of the information?

• A. Meats are really important for iron, and I should start feeding meats to my infant right away.
• B. Egg white should not be given to my infant because of the risk for an allergy.
• C. I can mix the food in my infant's bottle if he won't eat it.
• D. Fluoride supplementation is not necessary until permanent teeth come in.

Correct answer: B

Rationale: The correct answer is B: 'Egg white should not be given to my infant because of the risk for an allergy.' Egg white, even in small quantities, is not recommended for infants until the end of the first year of life due to its common allergenic potential. Choice A is incorrect because while meats are important for iron, they are not typically introduced to infants until around 6-8 months. Choice C is incorrect because food should never be mixed with formula in the bottle as it may lead to feeding difficulties and inaccurate monitoring of intake. Choice D is incorrect because fluoride supplementation may be required around 6 months depending on the infant's fluoride intake from water. Introducing solid foods like rice cereal, fruits, or vegetables is usually done around 5-6 months, following healthcare provider recommendations.

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