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. A client receiving preoperative instructions asks questions repeatedly about when to stop eating the night before the procedure. The nurse tries to refocus the client. The nurse notes that the client is frequently startled by noises in the hall. Assessment reveals rapid speech, trembling hands, tachypnea, tachycardia, and elevated blood pressure. The client admits to feeling nervous and having trouble sleeping. Based on the assessment, the nurse documents that the client has:

• A. mild anxiety.
• B. moderate anxiety.
• C. severe anxiety.
• D. a panic attack.

Correct answer: C

Rationale: The correct answer is 'severe anxiety.' In severe anxiety, a person focuses on small or scattered details and is unable to solve problems. The client's symptoms of rapid speech, trembling hands, tachypnea, tachycardia, elevated blood pressure, feeling nervous, and having trouble sleeping indicate severe anxiety. Mild anxiety enhances the ability to learn and solve problems, while moderate anxiety narrows the perceptual field but allows the client to notice things brought to their attention. During a panic attack, a person is disorganized, hyperactive, or unable to speak or act, which is not the case in this scenario.

3. As a type of quality indicator, an example of a structure standard is:

• A. a written philosophy.
• B. a procedure for a straight catheterization.
• C. a protocol for treatment of a client with chest pain.
• D. the diagnostic work-up for a client with abdominal pain.

Correct answer: A

Rationale: The correct answer is 'a written philosophy.' Structure standards define the conditions needed to operate a system and do not directly involve client care. Examples include philosophy, objectives, goals, hours of operation, and management responsibility. Choices B, C, and D involve specific procedures and protocols related to client care, which are not structure standards.

4. The chemotherapeutic DNA alkylating agents such as nitrogen mustards are effective because they:

• A. cross-link DNA strands with covalent bonds between alkyl groups on the drug and guanine bases on DNA.
• B. have few, if any, side effects.
• C. are used to treat multiple types of cancer.
• D. are cell-cycle-specific agents.

Correct answer: A

Rationale: Alkylating agents, such as nitrogen mustards, are effective chemotherapeutic agents because they cross-link DNA strands with covalent bonds between alkyl groups on the drug and guanine bases on DNA. This cross-linking interferes with DNA replication and transcription, leading to cell death. Choice B is incorrect because alkylating agents have numerous side effects, including alopecia, nausea, vomiting, and myelosuppression. Choice C is incorrect because while nitrogen mustards are used to treat multiple types of cancer like chronic lymphocytic leukemia, non-Hodgkin's lymphoma, and breast and ovarian cancer, their effectiveness is primarily due to DNA cross-linkage. Choice D is incorrect because alkylating agents are non-cell-cycle-specific agents, meaning they can act on cells in any phase of the cell cycle, not just on cells that are actively dividing.

5. The physician prescribes captopril (Capoten) 25mg po tid for the client with hypertension. Which of the following adverse reactions can occur with administration of Capoten?

• A. Tinnitus
• B. Persistent cough
• C. Muscle weakness
• D. Diarrhea

Correct answer: B

Rationale: A persistent cough might be related to an adverse reaction to captopril (Capoten). Tinnitus (choice A) and diarrhea (choice D) are not commonly associated adverse reactions of captopril. Muscle weakness (choice C) might occur initially but is not considered a common adverse effect of captopril. Therefore, the correct answer is B, persistent cough, as it is a known adverse reaction to captopril.

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