ATI RN
Fluid and Electrolytes ATI
1. A patient with hypokalemia and heart failure is admitted to the telemetry unit. The nurse is aware that hypokalemia could cause which of the following abnormalities on an electrocardiogram (ECG)?
- A. Shortened P-R interval
 - B. Inverted T wave
 - C. Depressed U wave
 - D. Elevated U wave
 
Correct answer: D
Rationale: The correct answer is D: Elevated U wave. Hypokalemia is associated with ECG changes such as an elevated U wave and flattened T waves. Choice A, a shortened P-R interval, is not typically seen in hypokalemia. Choice B, an inverted T wave, is more commonly associated with ischemia or CNS injury rather than hypokalemia. Choice C, a depressed U wave, is not a typical ECG abnormality seen in hypokalemia. Therefore, the correct ECG abnormality associated with hypokalemia is an elevated U wave.
2. A nurse assesses a client who has a radial artery catheter. Which assessment should the nurse complete first?
- A. . Amount of pressure in fluid container
 - B. Date of catheter tubing change
 - C. Percent of heparin in infusion container
 - D. . Presence of an ulnar pulse
 
Correct answer: D
Rationale:
3. The community health nurse is performing a home visit to an 84-year-old woman recovering from hip surgery. The nurse notes that the woman seems uncharacteristically confused and has dry mucous membranes. When asked about her fluid intake, the patient states, I stop drinking water early in the day because it is just too difficult to get up during the night to go to the bathroom. What would be the nurses best response?
- A. I will need to have your medications adjusted so you will need to be readmitted to the hospital for a complete workup
 - B. Limiting your fluids can create imbalances in your 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. If you build up too much urine in your bladder, it can cause you to get confused, especially when your body is under stress.
 
Correct answer: B
Rationale:
4. A nurse develops a plan of care for a client who has a history of hypocalcemia. What interventions should the nurse include in this clients care plan? (Select all that apply.)
- A. Use a draw sheet to reposition the client in bed.
 - B. . Strain all urine output and assess for urinary stones.
 - C. Provide nonslip footwear for the client to use when out of bed.
 - D.
 
Correct answer: B
Rationale:
5. You are caring for a patient who is being treated on the oncology unit with a diagnosis of lung cancer with bone metastases. During your assessment, you note the patient complains of a new onset of weakness with abdominal pain. Further assessment suggests that the patient likely has a fluid volume deficit. You should recognize that this patient may be experiencing what electrolyte imbalance?
- A. Hypernatremia
 - B. Hypomagnesemia
 - C. Hypophosphatemia
 - D. Hypercalcemia
 
Correct answer: D
Rationale:
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