The client's laboratory results indicate that the serum potassium level is 2.5 mEq/L (2.5 mmol/L). Which action should the nurse take?
Reference Range: Potassium (K+) [3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)]
Prepare to administer a glucose, then insulin, then potassium infusion.
Instruct the client to increase daily intake of potassium rich foods.
Inform the healthcare provider of the need for potassium replacement.
Change the plan of care to include hourly urinary output measurements.
Change the plan of care to include hourly urinary output measurements.
The Correct Answer is C
Rationale:
A. The combination of glucose and insulin is used to shift potassium into cells, which would lower serum potassium levels further; this is not appropriate for treating hypokalemia.
B. Increasing dietary intake of potassium is important but not sufficient to correct a serum potassium level as low as 2.5 mEq/L, which requires more immediate intervention.
C. A potassium level of 2.5 mEq/L is critically low and can lead to life-threatening cardiac arrhythmias. The healthcare provider should be informed immediately to initiate potassium replacement therapy, likely via intravenous infusion.
D. Hourly urinary output measurements may be useful but are not the immediate priority in treating severe hypokalemia.
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