ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse is caring for a client who is experiencing excessive diarrhea. The clients arterial blood gas values are pH 7.28, PaO2 98 mm Hg, PaCO2 45 mm Hg, and HCO3 16 mEq/L. Which provider order should the nurse expect to receive?
- A. Furosemide (Lasix) 40 mg intravenous push
- B. Sodium bicarbonate 100 mEq diluted in 1 L of D5W
- C. Mechanical ventilation
- D. Indwelling urinary catheter
Correct answer: B
Rationale:
2. A nurse is caring for clients with electrolyte imbalances on a medical-surgical unit. Which clinical manifestations are correctly paired with the contributing electrolyte imbalance? (Select all that do not apply.)
- A. Hypokalemia Flaccid paralysis with respiratory depression
- B. Hyperphosphatemia Paresthesia with sensations of tingling and numbness
- C. . Hyponatremia Decreased level of consciousness
- D.
Correct answer: B
Rationale:
3. What percentage of body water can be as high as in a newborn?
- A. 80%.
- B. 70%.
- C. 60%.
- D. 90%.
Correct answer: A
Rationale: The correct answer is A: 80%. Newborns can have a body water content as high as 80% due to their higher total body water compared to adults. Choice B (70%) is incorrect because newborns typically have a higher body water percentage. Choice C (60%) is also incorrect as it underestimates the body water content in newborns. Choice D (90%) is incorrect as it overestimates the body water percentage in newborns.
4. A medical-surgical nurse is concerned about the incidence of complications related to IV therapy, including bloodstream infection. Which intervention should the nurse suggest to the management team to make the biggest impact on decreasing complications
- A. Initiate a dedicated team to insert access devices
- B. . Require additional education for all nurses.
- C. Limit the use of peripheral venous access devices.
- D. Perform quality control testing on skin preparation products.
Correct answer: A
Rationale:
5. Electrolytes:
- A. do not form when glucose is added to water.
- B. dissociate in water solutions, but do not form ions.
- C. form ions in water solutions, but do not necessarily dissociate.
- D. dissociate in water solutions and form ions in water solutions.
Correct answer: D
Rationale: The correct answer is D. Electrolytes are substances that dissociate into ions when dissolved in water, allowing the solution to conduct electricity. Choice A is incorrect because glucose does not form electrolytes when added to water. Choice B is incorrect as it states that electrolytes dissociate but do not form ions, which is inaccurate as electrolytes do form ions in water solutions. Choice C is also incorrect as it states that electrolytes form ions but may not necessarily dissociate, which goes against the definition of electrolytes that must dissociate into ions for conductivity. Therefore, choice D is the most accurate as it correctly describes that electrolytes dissociate in water solutions and form ions, highlighting the essential characteristics of electrolytes.
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