ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse is caring for a client who has just had a central venous access line inserted. Which action should the nurse take next?
- A. Begin the prescribed infusion via the new access
- B. Ensure an x-ray is completed to confirm placement.
- C. Check medication calculations with a second RN.
- D. Make sure the solution is appropriate for a central line
Correct answer: B
Rationale:
2. You are performing an admission assessment on an older adult patient newly admitted for end-stage liver disease. What principle should guide your assessment of the patient's skin turgor?
- A. Overhydration is common among healthy older adults.
- B. Dehydration causes the skin to appear spongy.
- C. Inelastic skin turgor is a normal part of aging.
- D. Skin turgor cannot be assessed in patients over 70.
Correct answer: C
Rationale: Inelastic skin is a normal change of aging. However, this does not mean that skin turgor cannot be assessed in older patients. Dehydration, not overhydration, causes inelastic skin with tenting. Overhydration, not dehydration, causes the skin to appear edematous and spongy. Choice A is incorrect because overhydration is not common among healthy older adults. Choice B is incorrect because dehydration leads to inelastic skin, not sponginess. Choice D is incorrect as skin turgor assessment can be done in patients of any age, including those over 70.
3. A patient has questioned the nurses administration of IV normal saline, asking whether sterile water would be a more appropriate choice than saltwater. Under what circumstances would the nurse administer electrolyte-free water intravenously?
- A. Never, because it rapidly enters red blood cells, causing them to rupture.
- B. When the patient is severely dehydrated resulting in neurologic signs and symptoms
- C. When the patient is in excess of calcium and/or magnesium ions
- D. When a patients fluid volume deficit is due to acute or chronic renal failure
Correct answer: A
Rationale:
4. The renin and angiotensin systems help to maintain the balance of sodium and water in the body. What other functions do these systems serve?
- A. Regulating hemoglobin levels
- B. Maintaining a healthy blood volume
- C. Releasing platelets when tissues are injured
- D. Lowering blood volumes
Correct answer: B
Rationale: The correct answer is B: Maintaining a healthy blood volume. The renin and angiotensin systems not only help to regulate sodium and water balance in the body but also play a crucial role in maintaining an adequate blood volume. This is essential for normal blood pressure regulation and overall cardiovascular health. Choices A, C, and D are incorrect because hemoglobin levels are primarily regulated by the bone marrow and erythropoietin, platelets are released in response to blood vessel injury by a different mechanism, and the systems do not focus on lowering blood volumes but rather on maintaining them.
5. . A medical nurse educator is reviewing a patients recent episode of metabolic acidosis with members of the nursing staff. What should the educator describe about the role of the kidneys in metabolic acidosis?
- A. The kidneys retain hydrogen ions and excrete bicarbonate ions to help restore balance.
- B. The kidneys excrete hydrogen ions and conserve bicarbonate ions to help restore balance
- C. The kidneys react rapidly to compensate for imbalances in the body
- D. The kidneys regulate the bicarbonate level in the intracellular fluid.
Correct answer: B
Rationale:
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