ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse is caring for a client who is experiencing moderate metabolic alkalosis. Which action should the nurse take?
- A. Monitor daily hemoglobin and hematocrit values.
- B. Administer furosemide (Lasix) intravenously.
- C. Encourage the client to take deep breaths.
- D. Teach the client fall prevention measures.
Correct answer: D
Rationale:
2. The healthcare provider is evaluating a patient's laboratory results. Based on the laboratory findings, what results will cause the release of an antidiuretic hormone (ADH)?
- A. Increased serum sodium
- B. Decreased serum sodium
- C. Decrease in serum osmolality
- D. Decrease in thirst
Correct answer: A
Rationale: The correct answer is A: Increased serum sodium. When serum sodium levels increase, it triggers the release of ADH by the posterior pituitary gland. ADH helps in retaining water, reducing urine output, and maintaining fluid balance. Choices B, C, and D are incorrect because decreased serum sodium, decrease in serum osmolality, and decrease in thirst do not stimulate the release of ADH.
3. During a visit to an 84-year-old woman recovering from hip surgery, the nurse notices signs of confusion and poor skin turgor. The woman mentions she limits water intake to avoid nighttime bathroom trips. The nurse should explain to the woman that:
- A. She will need her medications adjusted and be readmitted for a complete workup.
- B. Limiting fluids can lead to body imbalances causing confusion; perhaps adjusting fluid intake timing is necessary.
- C. Post-surgical confusion is common, and it's safe not to urinate at night.
- D. Confusion after surgery is typical in the elderly due to sleep loss.
Correct answer: B
Rationale: The correct answer is B. In elderly patients, fluid and electrolyte imbalances can manifest with subtle signs like confusion. Limiting fluids can lead to such imbalances, affecting cognitive function. Adjusting the timing of fluid intake can help maintain hydration without causing nighttime disruptions. Choices A, C, and D are incorrect. Choice A suggests unnecessary hospital readmission and medication adjustments without addressing the root cause. Choice C wrongly normalizes the confusion and fails to address the potential issue of fluid restriction. Choice D incorrectly attributes confusion solely to sleep loss without considering the impact of fluid balance.
4. A nurse assesses a client who is experiencing an acid-base imbalance. The clients arterial blood gas values are pH 7.34, PaO2 88 mm Hg, PaCO2 38 mm Hg, and HCO3 19 mEq/L. Which assessment should the nurse perform first?
- A. . Cardiac rate and rhythm
- B. Skin and mucous membranes
- C. Musculoskeletal strength
- D. Level of orientation
Correct answer: A
Rationale:
5. While assessing a patient's peripheral IV site, you note edema around the insertion site. How should you document this complication related to IV therapy?
- A. Air emboli
- B. Phlebitis
- C. Infiltration
- D. Fluid overload
Correct answer: C
Rationale: Infiltration is the administration of a nonvesicant solution or medication into the surrounding tissue, typically due to the dislodgement or perforation of the vein wall by the IV cannula. It is characterized by edema around the insertion site, leakage of IV fluid, discomfort, coolness, and a decrease in flow rate. In this scenario, the presence of edema indicates infiltration, not air emboli, phlebitis, or fluid overload. Air emboli refer to air bubbles in the bloodstream, phlebitis is inflammation of the vein, and fluid overload is an excessive volume of fluid in the circulatory system.
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