ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. When planning the care of a patient with a fluid imbalance, the nurse understands that in the human body, water and electrolytes move from the arterial capillary bed to the interstitial fluid. What causes this to occur?
- A. Active transport of hydrogen ions across the capillary walls
- B. Pressure of the blood in the renal capillaries
- C. Action of the dissolved particles contained in a unit of blood
- D. Hydrostatic pressure resulting from the pumping action of the heart
Correct answer: D
Rationale:
2. A nurse assesses a client who is admitted for treatment of fluid overload. Which manifestations should the nurse expect to find? (Select all that do not apply.)
- A. Increased pulse rate
- B. . Distended neck veins
- C. Warm and pink skin
- D. Skeletal muscle weakness
Correct answer: C
Rationale:
3. 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.
4. A nurse is caring for a client with a peripheral vascular access device who is experiencing pain, redness, and swelling at the site. After removing the device, which action should the nurse take to relieve pain?
- A. Administer topical lidocaine to the site.
- B. Place warm compresses on the site.
- C. . Administer prescribed oral pain medication.
- D. Massage the site with scented oils.
Correct answer: B
Rationale:
5. Which condition can result from prolonged vomiting or diarrhea?
- A. Intracellular fluid
- B. Interstitial fluid
- C. Dehydration
- D. Electrolyte
Correct answer: C
Rationale: The correct answer is C: Dehydration. Prolonged vomiting or diarrhea can lead to significant fluid loss, causing dehydration. Intracellular fluid (choice A) and interstitial fluid (choice B) refer to specific compartments of body fluid and are not conditions resulting from vomiting or diarrhea. Electrolytes (choice D) are minerals that help maintain fluid balance in the body but are not the condition directly resulting from prolonged vomiting or diarrhea.
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