ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse is caring for a client who has a serum calcium level of 14 mg/dL. Which provider order should the nurse implement first?
- A. Encourage oral fluid intake.
- B. Connect the client to a cardiac monitor.
- C. Assess urinary output.
- D. Administer oral calcitonin (Calcimar).
Correct answer: A
Rationale: The correct answer is to encourage oral fluid intake. With a serum calcium level of 14 mg/dL, the client is at risk of hypercalcemia. Encouraging oral fluid intake helps to promote hydration and can help prevent further elevation of calcium levels. Connecting the client to a cardiac monitor (Choice B) is important but not the first priority in this situation. Assessing urinary output (Choice C) is relevant but does not address the immediate concern of high serum calcium levels. Administering oral calcitonin (Calcimar) (Choice D) may be a treatment option later, but the first step should be to address hydration.
2. Which of the following is not considered an extracellular fluid?
- A. Cerebrospinal fluid
- B. The humors of the eye
- C. Lymph
- D. Cerebrospinal fluid and the humors of the eye
Correct answer: D
Rationale: The correct answer is D. Cerebrospinal fluid and the humors of the eye are not considered extracellular fluids. Extracellular fluids are fluids found outside the cells, such as interstitial fluid and lymph. Cerebrospinal fluid is found within the central nervous system, while the humors of the eye (aqueous humor and vitreous humor) are located within the eyeball, making them distinct from extracellular fluids.
3. A nurse is visiting an 84-year-old woman living at home and recovering from hip surgery. The woman seems confused and has poor skin turgor, and she states that 'she stops drinking water early in the day because it is too difficult to get up during the night to go to the bathroom.' The nurse explains to the woman that:
- A. She will need to have her medications adjusted and be readmitted to the hospital for a complete workup.
- B. Limiting fluids can create imbalances in the body that can result in confusion; maybe we need to adjust the timing of your fluids.
- C. It is normal to be a little confused following surgery and it is safe not to urinate at night.
- D. Confusion following surgery is common in the elderly due to loss of sleep.
Correct answer: B
Rationale: The correct answer is B. In elderly patients, fluid deficits can lead to confusion and cognitive impairment. Limiting fluids can disrupt the body's balance, leading to such symptoms. Adjusting the timing of fluids can help maintain hydration without causing nighttime interruptions. Choices A, C, and D are incorrect because they do not address the underlying issue of fluid imbalance causing confusion. Choice A suggests unnecessary hospital readmission and medication adjustments. Choice C incorrectly normalizes confusion post-surgery and suggests it is safe not to urinate at night, which can exacerbate the issue. Choice D inaccurately attributes confusion to sleep loss rather than fluid imbalance.
4. You are caring for a patient admitted with a diagnosis of acute kidney injury. When you review your patients most recent laboratory reports, you note that the patients magnesium levels are high. You should prioritize assessment for which of the followin
- A. Diminished deep tendon reflexes
- B. Tachycardia
- C. Cool, clammy skin
- D. Acute flank pain
Correct answer: A
Rationale:
5. You are caring for a 65-year-old male patient admitted to your medical unit 72 hours ago with pyloric stenosis. A nasogastric tube placed upon admission has been on low intermittent suction ever since. Upon review of the mornings blood work, you notice that the patients potassium is below reference range. You should recognize that the patient may be at risk for what imbalance?
- A. Hypercalcemia
- B. Metabolic acidosis
- C. Metabolic alkalosis
- D. Respiratory acidosis
Correct answer: C
Rationale:
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