Nursing Elites

1. Which laboratory test would be the least effective in diagnosing a myocardial infarction?

• A. AST
• B. Troponin
• C. CK-MB
• D. Myoglobin

Correct answer: A

Rationale: AST, choice A, would be the least effective in diagnosing a myocardial infarction as it is not specific for this condition. Troponin, CK-MB, and myoglobin (choices B, C, and D) are more specific markers for myocardial infarction. Troponin is considered the gold standard due to its cardiac specificity. CK-MB is also specific to the heart, and its isoenzyme levels elevate post-heart damage. Myoglobin, although elevated in myocardial infarction, is not as specific as troponin and CK-MB and can also increase in conditions like burns and muscle trauma. Therefore, AST is the least effective choice for diagnosing a myocardial infarction.

2. 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.

3. Which client can best be assigned to the newly licensed practical nurse?

• A. The client receiving chemotherapy
• B. The client post-coronary bypass
• C. The client with a TURP
• D. The client with diverticulitis

Correct answer: D

Rationale: The best client to assign to the newly licensed nurse is the most stable client. In this case, the client with diverticulitis is the most stable among the options provided. Clients receiving chemotherapy and those post-coronary bypass require specialized care and attention, making them unsuitable for a newly licensed nurse. The client with a TURP may be at risk of bleeding, needing a nurse experienced in managing such complications. Therefore, the client with diverticulitis is the most appropriate choice for the newly licensed practical nurse.

4. The nurse is caring for a client with epilepsy who is being treated with carbamazepine (Tegretol). Which laboratory value might indicate a serious side effect of this drug?

• A. Uric acid of 5 mg/dL
• B. Hematocrit of 33%
• C. WBC 2,000 per cubic millimeter
• D. Platelets 150,000 per cubic millimeter

Correct answer: C

Rationale: Carbamazepine (Tegretol) can suppress the bone marrow, leading to a decrease in the white blood cell count. A laboratory value of WBC 2,000 per cubic millimeter indicates a serious side effect of the drug. Choices A and D are within normal limits, while choice B is at the lower limit of normal. Therefore, choices A, B, and D are incorrect.

5. When providing culturally competent care to a couple from the Philippines living in the United States who are expecting their first child, what should the nurse do first?

• A. review their own cultural beliefs and biases
• B. respectfully request that the couple only use medically approved health care providers
• C. understand the clients' need to learn the accepted medical practices of their new country
• D. study family dynamics to comprehend the male and female gender roles in the clients' culture

Correct answer: A

Rationale: When providing culturally competent care, the nurse's initial step is to reflect on and understand their own cultural beliefs and biases. By doing so, the nurse can approach the care of the couple from the Philippines with sensitivity and respect. This self-awareness helps the nurse recognize potential differences in beliefs and values, fostering effective communication and care. Option B is incorrect because it does not address the nurse's need for self-reflection. Option C is incorrect as it focuses on the clients adapting to the new country's practices rather than the nurse understanding the clients' existing beliefs. Option D is incorrect as it pertains to family dynamics and gender roles rather than the nurse's self-awareness.

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