ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse assesses a client who was started on intraperitoneal therapy 5 days ago. The client reports abdominal pain and feeling warm. For which complication of this therapy should the nurse assess this client?
- A. Allergic reaction
- B. Bowel obstruction
- C. Catheter lumen occlusion
- D. Infection
Correct answer: D
Rationale:
2. 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:
3. . A nurse is planning care for a nephrology patient with a new nursing graduate. The nurse states, A patient in renal failure partially loses the ability to regulate changes in pH. What is the cause of this partial inability?
- A. The kidneys regulate and reabsorb carbonic acid to change and maintain pH.
- B. The kidneys buffer acids through electrolyte changes
- C. The kidneys regenerate and reabsorb bicarbonate to maintain a stable pH.
- D. The kidneys combine carbonic acid and bicarbonate to maintain a stable pH.
Correct answer: C
Rationale:
4. You are working on a burns unit, and one of your acutely ill patients is exhibiting signs and symptoms of third spacing. Based on this change in status, you should expect the patient to exhibit signs and symptoms of what imbalance?
- A. Metabolic alkalosis
- B. Hypermagnesemia
- C. Hypercalcemia
- D. Hypovolemia
Correct answer: D
Rationale: When a patient exhibits signs and symptoms of third-spacing, where fluid moves out of the intravascular space but not into the intracellular space, hypovolemia is expected. This leads to a decreased circulating blood volume. Increased calcium and magnesium levels are not typically associated with third-spacing fluid shift. Burns usually result in acidosis rather than alkalosis, making metabolic alkalosis an incorrect choice. Therefore, hypovolemia is the correct answer in this scenario.
5. Under normal circumstances, the kidneys provide the greatest means of water loss. Which organ provides the second greatest means of water loss?
- A. Skin
- B. Lungs
- C. Intestines
- D. Muscles
Correct answer: A
Rationale: The correct answer is A: Skin. After the kidneys, the skin is the second largest route of water loss through perspiration. Choice B, Lungs, is incorrect as the lungs primarily exchange gases and do not play a significant role in water loss. Choice C, Intestines, is also incorrect as water loss through the intestines is minimal since most water is reabsorbed during digestion. Choice D, Muscles, is incorrect as muscles are not a major source of water loss in the body.
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