ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse is caring for clients with electrolyte imbalances on a medical-surgical unit. Which clinical manifestations are correctly paired with the contributing electrolyte imbalance? (Select all that do not apply.)
- A. Hypokalemia Flaccid paralysis with respiratory depression
- B. Hyperphosphatemia Paresthesia with sensations of tingling and numbness
- C. . Hyponatremia Decreased level of consciousness
- D.
Correct answer: B
Rationale:
2. When does dehydration begin to occur?
- A. the body reduces fluid output to zero.
- B. the body increases the release of ANH.
- C. the salivary secretions decrease.
- D. the salivary secretions increase.
Correct answer: C
Rationale: Dehydration leads to a decrease in the body's fluid levels, causing the salivary glands to produce less saliva, resulting in a dry mouth. Therefore, when dehydration begins to occur, salivary secretions decrease. Choice A is incorrect because the body does not reduce fluid output to zero during dehydration; it tries to conserve fluids. Choice B is incorrect as dehydration does not directly increase the release of ANH (Atrial Natriuretic Hormone). Choice D is incorrect because salivary secretions do not increase but decrease during dehydration.
3. What is the main force that pushes fluid in blood capillaries?
- A. Blood pressure.
- B. Sodium in the blood plasma.
- C. Sodium in the interstitial fluid.
- D. Protein in the blood plasma.
Correct answer: A
Rationale: The correct answer is A, blood pressure. Blood pressure is the primary force that pushes fluid out of the capillaries into the surrounding tissues. This pressure difference is essential for the exchange of nutrients, gases, and waste products between the blood and tissues. Choices B, C, and D are incorrect as they do not represent the primary force responsible for pushing fluid in blood capillaries.
4. 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.
5. A nurse is assessing clients on a medical-surgical unit. Which clients are at increased risk for hypophosphatemia? (Select all that do not apply.)
- A. A 36-year-old who is malnourished
- B. A 42-year-old with uncontrolled diabetes
- C. A 76-year-old who is prescribed antacids
- D. 50-year-old with hyperparathyroidism
Correct answer: C
Rationale:
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