Nursing Elites

1. A patient who is being treated for pneumonia starts complaining of sudden shortness of breath. An arterial blood gas (ABG) is drawn. The ABG has the following values: pH 7.21, PaCO2 64 mm Hg, HCO3 = 24 mm Hg. What does the ABG reflect?

• A. Respiratory acidosis
• B. Metabolic alkalosis
• C. Respiratory alkalosis
• D. Metabolic acidosis

Correct answer: A

Rationale:

2. Which condition can result from prolonged vomiting or diarrhea?

• A. Intracellular fluid
• B. Interstitial fluid
• C. Dehydration
• D. Electrolyte

Correct answer: C

Rationale: The correct answer is C: Dehydration. Prolonged vomiting or diarrhea can lead to significant fluid loss, causing dehydration. Intracellular fluid (choice A) and interstitial fluid (choice B) refer to specific compartments of body fluid and are not conditions resulting from vomiting or diarrhea. Electrolytes (choice D) are minerals that help maintain fluid balance in the body but are not the condition directly resulting from prolonged vomiting or diarrhea.

3. . A medical nurse educator is reviewing a patients recent episode of metabolic acidosis with members of the nursing staff. What should the educator describe about the role of the kidneys in metabolic acidosis?

• A. The kidneys retain hydrogen ions and excrete bicarbonate ions to help restore balance.
• B. The kidneys excrete hydrogen ions and conserve bicarbonate ions to help restore balance
• C. The kidneys react rapidly to compensate for imbalances in the body
• D. The kidneys regulate the bicarbonate level in the intracellular fluid.

Correct answer: B

Rationale:

4. A gerontologic nurse is teaching students about the high incidence and prevalence of dehydration in older adults. What factors contribute to this phenomenon? Select all that do not apply.

• A. Decreased kidney mass
• B. Decreased renal blood flow
• C. Decreased excretion of potassium
• D. Increased conservation of sodium

Correct answer: D

Rationale:

5. Which hormones increase the amount of water in the body?

• A. ADH
• B. Aldosterone
• C. ANH
• D. ADH and aldosterone

Correct answer: D

Rationale: The correct answer is D, ADH and aldosterone. Both antidiuretic hormone (ADH) and aldosterone increase water retention by the kidneys, thereby increasing blood volume. ADH acts on the kidneys to increase water reabsorption, while aldosterone acts on the kidneys to promote sodium reabsorption, leading to water retention. Choice A, ADH, is partially correct as it alone increases water retention. Choice B, aldosterone, is also partially correct as it alone increases water retention. Choice C, ANH (atrial natriuretic hormone), actually decreases water retention by promoting sodium excretion and inhibiting aldosterone release.

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