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 female patient is discharged from the hospital after having an episode of heart failure. She's prescribed daily oral doses of digoxin (Lanoxin) and furosemide (Lasix). Two days later, she tells her community health nurse that she feels weak and her heart 'flutters' frequently. What action should the nurse take?
- A. Tell the patient to rest more often.
- B. Tell the patient to stop taking the digoxin and call the physician.
- C. Call the physician, report the symptoms, and request to draw a blood sample to determine the patient's potassium level.
- D. Tell the patient to avoid foods that contain caffeine.
Correct answer: C
Rationale: The correct action for the nurse to take is to call the physician, report the symptoms, and request to draw a blood sample to determine the patient's potassium level. Furosemide is a potassium-wasting diuretic, and low potassium levels can lead to weakness and palpitations. Resting more often won't address the underlying issue of hypokalemia caused by furosemide. While digoxin can have side effects, it is not causing the symptoms described by the patient. Avoiding caffeine may be beneficial, but addressing the potassium level is more critical in this situation.
3. What is the fluid inside the cell called?
- A. Plasma
- B. Intracellular fluid
- C. Interstitial fluid
- D. Plasma and intracellular fluid
Correct answer: B
Rationale: The correct answer is 'Intracellular fluid.' Intracellular fluid refers to the fluid contained within the cells, constituting a significant portion of the body's total water content. Choices A, C, and D are incorrect. Plasma is the liquid component of blood outside the cells, interstitial fluid is the fluid surrounding cells in tissues, and the combination of plasma and intracellular fluid is not the specific term for the fluid inside the cell.
4. Place a washcloth between the skin and tourniquet
- A. Provide a bed bath instead of letting the client take a shower
- B. Use sterile technique when changing the dressing.
- C. Disconnect the intravenous fluid tubing prior to the clients bath.
- D. Use a plastic bag to cover the extremity with the device
Correct answer: D
Rationale:
5. What fluid is found in spaces between the cells?
- A. Intracellular fluid
- B. Interstitial fluid
- C. Plasma
- D. Electrolyte
Correct answer: B
Rationale: The correct answer is B, Interstitial fluid. Interstitial fluid is the fluid that surrounds and occupies the spaces between cells, providing them with nutrients and removing waste. Choices A, C, and D are incorrect because intracellular fluid refers to fluid inside cells, plasma refers to the liquid component of blood, and electrolyte refers to substances that dissociate into ions in solution, affecting fluid balance but not specifically found in spaces between cells.
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