which laboratory test would be the least effective in making the diagnosis of a myocardial infarction
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Nursing Elites

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. A client who recently lost 50 pounds just received news that she is pregnant. A possible nursing diagnosis is:

Correct answer: D

Rationale: In this scenario, the client's recent weight loss and subsequent pregnancy could lead to concerns about weight regain and body image. The most appropriate nursing diagnosis is 'Potential Situational Low Self-Esteem (related to fear of weight regain and pregnancy).' This diagnosis reflects the client's potential emotional response to the fear of losing the progress achieved through weight loss and dealing with changes in body image due to pregnancy. Options A and C imply that low self-esteem is already present, which is not supported by the information given. Option B is not as suitable as the client's self-esteem issues are more related to the fear of weight regain and pregnancy, making option D the best choice.

3. The nurse is caring for a client with laryngeal cancer. Which finding ascertained in the health history would not be common for this diagnosis?

Correct answer: C

Rationale: Diarrhea is not a common finding in clients with laryngeal cancer. Foul breath (A), dysphagia (B), and chronic hiccups (D) are expected findings associated with laryngeal cancer. Foul breath can result from tissue breakdown in the mouth and throat. Dysphagia, or difficulty swallowing, can occur due to the tumor's location affecting the swallowing mechanism. Chronic hiccups can be a symptom of irritation to the phrenic nerves from the cancer.

4. A woman asks, "How much alcohol can I safely drink while pregnant?"? The nurse's best response is:

Correct answer: A

Rationale: The correct answer is, "The amount of alcohol that is safe during pregnancy is unknown."? This response is appropriate because there is no known safe amount of alcohol consumption during pregnancy. Consuming any amount of alcohol during pregnancy can pose risks to the developing fetus, leading to conditions like fetal alcohol syndrome, which is a combination of mental and physical abnormalities in infants. Choices B, C, and D are incorrect. Choice B suggests that consuming one or two drinks a day is safe during pregnancy, which is not supported by current medical guidelines. Choice C incorrectly states that only drinking three or more drinks on any given occasion is harmful, when in reality, any amount of alcohol can be harmful to the fetus. Choice D is inappropriate as it suggests that having a drink to relax and sleep is acceptable during pregnancy, which is not the case.

5. In the emergency room, a nurse is responsible for triaging four clients injured in a motor vehicle accident. Which of the following clients should receive priority in care?

Correct answer: B

Rationale: The 15-year-old with sternal bruises should receive priority in care as this client might be experiencing airway and oxygenation problems. Airway issues take precedence in triage. The 10-year-old with lacerations on the face, although looking bad, is not in immediate distress. The 34-year-old with a fractured femur should be immobilized but can be seen after the client with sternal bruising. The 50-year-old with a dislocated elbow can also be seen later as dislocated elbows are not life-threatening compared to potential airway compromise.

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