ATI RN
Fluid and Electrolytes ATI
1. Which of the following might the nurse assess in a patient diagnosed with hypermagnesemia?
Correct Answer: A
Rationale: To gauge a patient's magnesium status, the nurse should check deep tendon reflexes. If the reflex is absent, this may indicate high serum magnesium.
2. A patient is receiving furosemide (Lasix) 40 mg/d IV. What electrolyte value should be monitored when a patient is receiving a loop diuretic?
Correct Answer: C
Rationale: The diuretics act on the ascending loop of Henle to prevent re-absorption of water, potassium, and sodium. Because of this, potassium and sodium levels should be monitored when a patient is receiving diuretics.
3. The nurse is evaluating a patient's laboratory results. Based upon the laboratory findings, what results will cause the release of an antidiuretic hormone (ADH)?
Correct Answer: A
Rationale: Increased serum sodium causes increased thirst and the release of ADH by the posterior pituitary gland.
4. Third spacing occurs when fluid moves out of the intravascular space but not into the intracellular space. Based upon this fluid shift, the nurse will expect the patient to demonstrate:
Correct Answer: D
Rationale: Third-spacing fluid shift, which occurs when fluid moves out of the intravascular space but not into the intracellular space, can cause hypovolemia.
5. The nurse working in the PACU is aware that which of the following procedures may contribute to extracellular losses?
Correct Answer: C
Rationale: Fluid loss from the extracellular compartment can be caused by abdominal surgery.
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