Nursing Elites

1. 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.

2. What is the function of aldosterone?

• A. Regulates body temperature.
• B. Decreases blood pressure.
• C. Increases sodium reabsorption.
• D. Promotes water excretion.

Correct answer: C

Rationale: Aldosterone increases the reabsorption of sodium in the kidneys, which leads to an increase in blood volume and blood pressure. Choice A is incorrect as aldosterone does not regulate body temperature. Choice B is incorrect as aldosterone increases blood pressure by increasing sodium reabsorption. Choice D is incorrect as aldosterone promotes water retention by increasing sodium reabsorption.

3. A patient has questioned the nurses administration of IV normal saline, asking whether sterile water would be a more appropriate choice than saltwater. Under what circumstances would the nurse administer electrolyte-free water intravenously?

• A. Never, because it rapidly enters red blood cells, causing them to rupture.
• B. When the patient is severely dehydrated resulting in neurologic signs and symptoms
• C. When the patient is in excess of calcium and/or magnesium ions
• D. When a patients fluid volume deficit is due to acute or chronic renal failure

Correct answer: A

Rationale:

4. Third spacing occurs when fluid moves out of the intravascular space but not into the intracellular space. Based on this fluid shift, the nurse will expect the patient to demonstrate:

• A. Hypertension
• B. Bradycardia
• C. Hypervolemia
• D. Hypovolemia

Correct answer: D

Rationale: In the scenario of third-spacing fluid shift, where fluid moves out of the intravascular space but not into the intracellular space, the patient is expected to demonstrate hypovolemia. Hypertension (Choice A) is unlikely as hypovolemia typically leads to decreased blood pressure. Bradycardia (Choice B) is not a common manifestation of hypovolemia, as the body often tries to compensate by increasing heart rate. Hypervolemia (Choice C) indicates an excess of fluid, which is the opposite of what occurs in third spacing.

5. Which hormone is made in the pituitary gland and increases water absorption in the kidney?

• A. Intracellular fluid
• B. Interstitial fluid
• C. Plasma
• D. ADH

Correct answer: D

Rationale: The correct answer is D, ADH (Antidiuretic hormone). ADH is produced by the pituitary gland and functions to increase water reabsorption in the kidneys. Choices A, B, and C are incorrect as they do not refer to a hormone responsible for increasing water absorption in the kidney.

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