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.

Answer and Explanation

The Correct Answer is C

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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Free Nursing Study Resources

Correct Answer is A

Explanation

A. Changes in a mole's color, size, or shape could indicate melanoma, a serious type of skin cancer. Immediate evaluation by a healthcare provider is critical for early diagnosis and treatment.
B. While monitoring the mole is important, immediate professional evaluation is the priority to rule out malignancy.
C. Assessing sun exposure is relevant for skin cancer risk, but it is not the immediate priority in this scenario.
D. Teaching a family member to monitor the mole is not sufficient when there is a significant change that requires professional evaluation.

A. Place the vial with the remainder of the medication into a locked drawer. B. Ask another nurse to witness the medication being discarded. C. Withdraw the medication into a syringe and label it with the client's name. D. Throw the vial into the trash in the presence of another nurse.

Correct Answer is B

Explanation

A. Storing the remainder of the medication in a locked drawer is not appropriate for controlled substances that are not fully administered.
B. Lorazepam is a controlled substance, and any unused portion must be disposed of according to hospital policy, typically by discarding it with a witness. The presence of another nurse to witness the discarding process ensures proper documentation and compliance with legal regulations.
C. Withdrawing the medication into a syringe and labeling it is unsafe as it may lead to medication errors or misuse.
D. Simply throwing the vial into the trash, even with another nurse present, does not comply with the proper disposal procedure for controlled substances.

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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)]

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Explanation

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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)]