which laboratory test would be the least effective in making the diagnosis of a myocardial infarction
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NCLEX-PN

Nclex Practice Questions 2024

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

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. The client is receiving heparin for thrombophlebitis of the left lower extremity. Which of the following drugs reverses the effects of heparin?

Correct answer: B

Rationale: The correct answer is Protamine sulfate. Protamine sulfate is the antidote for heparin, as it reverses its effects. Cyanocobalamin is a form of Vitamin B12 and is not used to reverse heparin effects. Streptokinase is a thrombolytic agent that is used to dissolve blood clots, not to reverse heparin effects. Sodium warfarin is an anticoagulant, but it is not the antidote for heparin. Therefore, answers A, C, and D are incorrect as they do not reverse the effects of heparin.

3. An elderly client denies that abuse is occurring. Which of the following factors could be a barrier for the client to admit being a victim?

Correct answer: D

Rationale: Barriers to reporting elder abuse include victim shame, fear of reprisals, fear of loss of caregiver, and lack of knowledge of agencies that provide services. Many elders fear that reporting abuse results in their placement in long-term care because the current caregiver is the abuser. Choice A is incorrect because knowledge of the frequency of elder abuse is not a significant factor in a victim's reluctance to report. Choice B is also incorrect; while some victims may have feelings of undeservedness, it is not a common primary barrier to reporting abuse. Choice C is incorrect as the lack of appropriate screening tools may hinder identification but is not a significant barrier for the client to admit being a victim. Therefore, the correct answer is D, as the fear of reprisal or further violence if the incident is reported is a common and significant barrier for elderly clients to admit being a victim.

4. Which of the following statements by a client with spinal cord injury indicates a need for further teaching by the nurse regarding bowel management?

Correct answer: B

Rationale: The corrected statement indicates the need for further teaching because it suggests consuming fluids like fruit juices, which can include caffeinated options that may stimulate fluid loss through increased urination. It is more appropriate to emphasize the consumption of fluids like water and non-caffeinated fruit juices for proper hydration. Choices A, C, and D demonstrate a correct understanding of bowel management by focusing on dietary considerations, establishing a regular bowel movement schedule, and using proper positioning during bowel movements. Option B is incorrect as it may lead to increased fluid loss due to caffeine content in some fruit juices.

5. The nurse is developing a care plan for a client with severe anxiety. An appropriate outcome for the client is that within 4 days the client should:

Correct answer: B

Rationale: When developing outcome criteria for a client with severe anxiety, it is crucial for the goals to be specific, measurable, and realistic. In this scenario, the most appropriate outcome is for the client to talk to the nurse for 10 minutes within 4 days. This goal is specific (talking for a defined duration), measurable (10 minutes), and realistic given the client's condition. Expecting a severely anxious client to sit quietly for 30 minutes is not realistic and may even exacerbate their anxiety. While developing an adaptive coping mechanism is important, it is a broader long-term goal and may not be achievable within the specified timeframe. Having decreased anxiety is a desirable outcome, but it lacks specificity and measurability, making it less suitable as an immediate goal.

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