A patient who started lithium therapy 2 weeks ago presents with tremors, nausea, and a serum lithium level of 2.2 mEq/L. The nurse's priority action is to:

A patient who started lithium therapy 2

Multiple choice — select the best answer

AContinue lithium at current dose and monitor
BAdminister an extra dose to achieve therapeutic range
CGive the next scheduled dose as the level will self-correct
DWithhold lithium, notify physician immediately — serum level indicates toxicity

✓ Correct answer: D. Withhold lithium, notify physician immediately — serum level indicates toxicity The therapeutic lithium range is 0.6–1.2 mEq/L. A level of 2.2 mEq/L is toxic (>1.5 mEq/L). Signs include tremor, nausea, confusion, and at higher levels: seizures and cardiac arrhythmias. Lithium must be withheld and the physician notified immediately. Hydration and monitoring are key.

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A patient who started lithium therapy 2 weeks ago presents with tremors, nausea, and a serum lithium level of 2.2 mEq/L. The nurse's priority action is to:

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