ATI RN
Fluid and Electrolytes ATI
1. The nurse is admitting a patient with a suspected fluid imbalance. The most sensitive indicator of body fluid balance is:
- A. Daily weight
- B. Serum sodium levels
- C. Measured intake and output
- D. Blood pressure
Correct answer: A
Rationale: Daily weight is the most sensitive indicator of body fluid balance because it can show trends over time, helping in assessing the effectiveness of interventions and medications. While serum sodium levels provide objective data on electrolyte balance, they may not accurately reflect fluid balance, especially if a patient is dehydrated. Measured intake and output are crucial for assessing fluid balance, but it can be challenging to match the two due to various ways fluid is lost from the body. Blood pressure and other vital signs may not always be reliable indicators of fluid balance as they can be influenced by other factors beyond fluid status.
2. You are working on a burns unit, and one of your acutely ill patients is exhibiting signs and symptoms of third spacing. Based on this change in status, you should expect the patient to exhibit signs and symptoms of what imbalance?
- A. Metabolic alkalosis
- B. Hypermagnesemia
- C. Hypercalcemia
- D. Hypovolemia
Correct answer: D
Rationale: When a patient exhibits signs and symptoms of third-spacing, where fluid moves out of the intravascular space but not into the intracellular space, hypovolemia is expected. This leads to a decreased circulating blood volume. Increased calcium and magnesium levels are not typically associated with third-spacing fluid shift. Burns usually result in acidosis rather than alkalosis, making metabolic alkalosis an incorrect choice. Therefore, hypovolemia is the correct answer in this scenario.
3. Which of the following might the nurse assess in a patient diagnosed with hypermagnesemia?
- A. Diminished deep tendon reflexes
- B. Tachycardia
- C. Cool clammy skin
- D. Increased serum magnesium
Correct answer: A
Rationale: The correct answer is A: Diminished deep tendon reflexes. In a patient with hypermagnesemia, the nurse would assess for diminished deep tendon reflexes. Hypermagnesemia can lead to neuromuscular depression, causing a decrease in deep tendon reflexes. Tachycardia (choice B) is more commonly associated with hypomagnesemia. Cool clammy skin (choice C) is not typically a direct symptom of hypermagnesemia. While hypermagnesemia does involve increased serum magnesium levels (choice D), assessing serum levels is a laboratory test and not a clinical assessment like checking deep tendon reflexes.
4. A home care nurse prepares to administer intravenous medication to a client. The nurse assesses the site and reviews the clients chart prior to administering the medication: Client: Thomas Jackson DOB: 5/3/1936 Gender: Male January 23 (Today): Right uppe
- A. Notify the health care provider
- B. . Administer the prescribed medication.
- C. Discontinue the PICC
- D. Switch the medication to the oral route
Correct answer: B
Rationale:
5. The nurse is providing care for a patient with chronic obstructive pulmonary disease. When describing the process of respiration the nurse explains how oxygen and carbon dioxide are exchanged between the pulmonary capillaries and the alveoli. The nurse is describing what process?
- A. Diffusion
- B. Osmosis
- C. Active transport
- D. Filtration
Correct answer: A
Rationale:
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