ATI RN
ATI Fluid and Electrolytes
1. Extracellular fluid includes:
- A. plasma and intracellular fluid.
- B. interstitial and intracellular fluids.
- C. plasma and interstitial fluid.
- D. plasma, interstitial fluid, and intracellular fluid.
Correct answer: C
Rationale: The correct answer is C: 'plasma and interstitial fluid.' Extracellular fluid consists of all body fluids outside the cells, primarily including plasma (the liquid component of blood) and interstitial fluid (the fluid between cells). Choices A, B, and D are incorrect because intracellular fluid is located within the cells, not in the extracellular fluid compartment.
2. A nurse is caring for a client who is experiencing moderate metabolic alkalosis. Which action should the nurse take?
- A. Monitor daily hemoglobin and hematocrit values.
- B. Administer furosemide (Lasix) intravenously.
- C. Encourage the client to take deep breaths.
- D. Teach the client fall prevention measures.
Correct answer: D
Rationale:
3. The nurse is assessing the patient for the presence of a Chvostek's sign. What electrolyte imbalance does a positive Chvostek's sign indicate?
- A. Hypermagnesemia
- B. Hypomagnesemia
- C. Hypocalcemia
- D. Hyperkalemia
Correct answer: C
Rationale: Chvostek's sign is characterized by a brief contraction of the upper lip, nose, or side of the face and is indicative of hypocalcemia, making choice C the correct answer. Hypomagnesemia (choice B) is associated with Trousseau's sign, not Chvostek's sign. Hypermagnesemia (choice A) is not related to Chvostek's sign. Hyperkalemia (choice D) is not typically associated with Chvostek's sign; instead, it may present with muscle weakness and cardiac arrhythmias.
4. 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:
5. Which organ has the greatest effect on fluid output?
- A. Kidneys
- B. Lungs
- C. Skin
- D. Intestines
Correct answer: A
Rationale: The correct answer is the kidneys. The kidneys are primarily responsible for regulating fluid balance by filtering blood and adjusting the volume and concentration of urine. The lungs primarily regulate gas exchange, not fluid balance. The skin plays a role in temperature regulation and protection but is not the primary organ for fluid output. The intestines are mainly involved in the absorption of nutrients and water, rather than fluid output.
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