ATI RN
Fluid and Electrolytes ATI
1. 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.
2. 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:
3. You are the nurse caring for a 77-year-old male patient who has been involved in a motor vehicle accident. You and your colleague note that the patients labs indicate minimally elevated serum creatinine levels, which your colleague dismisses. What can this increase in creatinine indicate in older adults?
- A. Substantially reduced renal function
- B. Acute kidney injury
- C. Decreased cardiac output
- D. ) Alterations in ratio of body fluids to muscle mass
Correct answer: A
Rationale:
4. 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.
5. A nurse teaches a client who is prescribed a central vascular access device. Which statement should the nurse include in this clients teaching?
- A. You will need to wear a sling on your arm while the device is in place
- B. There is no risk of infection because sterile technique will be used during insertion.
- C. . Ask all providers to vigorously clean the connections prior to accessing the device.
- D. You will not be able to take a bath with this vascular access device.
Correct answer: C
Rationale:
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