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. A nurse is caring for a client who is receiving an epidural infusion for pain management. Which assessment finding requires immediate intervention from the nurse?
- A. Redness at the catheter insertion site
- B. Report of headache and stiff neck
- C. Temperature of 100.1 F (37.8 C)
- D. Pain rating of 8 on a scale of 0 to 10
Correct answer: B
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. The patient asks the nurse if he will die if air bubbles get into the IV tubing. What is the nurse's best response?
- A. The system is closed, and that scenario is highly unlikely.
- B. Only relatively large volumes of air administered rapidly are dangerous.
- C. There is a risk of complications associated with IV administration.
- D. You have been influenced by movies too much.
Correct answer: B
Rationale: The correct answer is B because air emboli are more commonly associated with central vein access. Usually, only relatively large volumes of air administered rapidly are dangerous. It is a significant concern when air enters a central venous access line. Choice A is incorrect as it downplays the risk and is not entirely accurate. Choice C is too general and does not specifically address the patient's concern. Choice D is dismissive and does not provide any relevant information regarding the risk of air bubbles in IV tubing.
5. You are the nurse evaluating a newly admitted patients laboratory results, which include several values that are outside of reference ranges. Which of the following would cause the release of antidiuretic hormone (ADH)?
- A. Increased serum sodium
- B. Decreased serum potassium
- C. Decreased hemoglobin
- D. Increased platelets
Correct answer: A
Rationale:
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