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. The physician has ordered sodium warfarin (Coumadin) for the client with thrombophlebitis. The order should be entered to administer the medication at:

• A. 900
• B. 1200
• C. 1700
• D. 2100

Correct answer: C

Rationale: Sodium warfarin is typically administered in the late afternoon, around 1700 hours. This timing allows for accurate bleeding times to be drawn in the morning. Administering it at 0900 (choice A) would not align with this schedule and may affect the monitoring of bleeding times. Choice B (1200) is midday, which is not the recommended time for sodium warfarin administration. Choice D (2100) is in the evening, which is also not ideal. Therefore, the correct time for administering sodium warfarin is 1700 (choice C).

3. When discussing the patterns of use of alcohol and other drugs, which piece of information should the nurse include?

• A. Lifetime prevalence and intensity of alcohol use are greater in men than in women.
• B. Caucasians report higher levels of alcohol use than African Americans or Hispanics.
• C. Overuse of alcohol and other drugs increases into the mid-20s, then levels off and decreases with age.
• D. Heavy use is more common in lower socioeconomic groups due to affordability.

Correct answer: C

Rationale: The correct answer is that overuse of alcohol and other drugs increases into the mid-20s, then levels off and decreases with age. Recent research indicates that alcohol and illicit drug use tends to rise into the mid-20s and then decline with age. Choices A and B are incorrect because lifetime prevalence and intensity of alcohol use are greater in men than in women, and Caucasians do not report higher levels of alcohol use compared to African Americans or Hispanics. Choice D is incorrect because heavy use is more common in lower socioeconomic groups due to factors like stress, coping mechanisms, and availability, not just affordability.

4. A complication of total parenteral nutrition (TPN) is the development of cholestasis. What is this condition?

• A. an inflammatory process of the extrahepatic bile ducts
• B. an arrest of the normal flow of bile
• C. an inflammation of the gallbladder
• D. the formation of gallstones

Correct answer: B

Rationale: Cholestasis due to TPN administration is an intrahepatic process that interrupts the normal flow of bile. It is characterized by a reduction or stoppage of bile flow. Choice A, an inflammatory process of the extrahepatic bile ducts, refers to cholangitis, not cholestasis. Choice C, an inflammation of the gallbladder, describes cholecystitis, a different condition. Choice D, the formation of gallstones, is not correct as cholestasis is about the flow of bile, not the formation of gallstones.

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?

• A. A 10-year-old with lacerations on the face
• B. A 15-year-old with sternal bruises
• C. A 34-year-old with a fractured femur
• D. A 50-year-old with a dislocated elbow

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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