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 50-milliliter (ml) bolus of normal saline fluid is ordered by the physician. The physician wants it to infuse in 30 minutes. The nurse should set the pump rate at:

• A. 100 ml per hour for one hour.
• B. 60 ml per hour for one-half hour
• C. 120 ml per hour for one hour.
• D. 50 ml per hour for one hour.

Correct answer: A

Rationale: To infuse a 50 ml bolus in 30 minutes, the rate should be calculated as follows: 50 ml / 30 min = 100 ml per hour. Therefore, the correct answer is to set the pump rate at 100 ml per hour for one hour. Choice A is the correct rate based on the calculation. Choices B, C, and D all provide incorrect rates that do not match the physician's order. Choice B would only deliver 30 ml in 30 minutes, not the ordered 50 ml. Choice C would deliver 120 ml in one hour, which is 20 ml more than ordered. Choice D would only provide 25 ml over 30 minutes, not the full 50 ml prescribed.

3. A client is admitted to the acute care unit. Initial laboratory values reveal serum sodium of 170meq/L. What behavior changes would be most common for this client?

• A. Anger
• B. Mania
• C. Depression
• D. Psychosis

Correct answer: B

Rationale: The correct answer is 'Mania.' A client with a serum sodium level of 170 meq/L has hypernatremia, which can lead to manic behavior. Hypernatremia is associated with irritability, restlessness, confusion, and in severe cases, manic symptoms. Choices A, C, and D (Anger, Depression, Psychosis) are not typically associated with hypernatremia and are, therefore, incorrect in this context.

4. What are the three major sequential maturational crises for females?

• A. puberty, pregnancy, and menopause.
• B. death of a spouse, menopause, and childbirth.
• C. rape, divorce, and menarche.
• D. dating, engagement, and separation.

Correct answer: A

Rationale: The three major sequential maturational crises affecting females are puberty, pregnancy, and menopause. Puberty signifies the beginning of menarche, the first menstrual period. Pregnancy is a transformative experience with long-lasting effects on a woman's life. Menopause marks the end of menstrual cycles. These milestones are well-documented in research and are significant events in a woman's life. Nurses play a vital role in supporting females through these stages. Choices B, C, and D are incorrect as they do not accurately represent the recognized sequential maturational crises in a female's life.

5. Which of the following coping mechanisms protects an individual from anxiety?

• A. denial and fantasy
• B. rationalization and suppression
• C. regression and displacement
• D. reaction formation and projection

Correct answer: A

Rationale: The correct answer is 'denial and fantasy.' Denial involves blocking external events from awareness to avoid anxiety, while fantasy is escaping to a more comfortable, less threatening place. These mechanisms can protect individuals from anxiety by providing temporary relief or distraction. Choices B, C, and D are incorrect. Rationalization and suppression do not directly protect individuals from anxiety. Regression and displacement involve reverting to earlier developmental stages or redirecting emotions to a substitute target, which do not directly shield individuals from anxiety. Reaction formation and projection entail behaving in the opposite way to one's impulses or attributing one's feelings to others respectively, which do not directly protect individuals from anxiety.

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