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Lithium level questions test whether the nurse knows the memory range, checks trough timing, and notices toxicity risk from dehydration, sodium shifts, renal impairment, or interacting drugs.
Study aid - not medical advice. Not a clinical decision tool. For NCLEX pharmacology review only.
1. Verify whether the lithium level was drawn as a trough, commonly about 12 hours after the last dose.
2. Compare the level with the ordered target and symptoms.
3. Assess hydration, sodium intake, renal function, and medication changes.
Notify the provider and follow protocol if the lithium level is high, the patient has toxicity symptoms, or there is dehydration, severe vomiting/diarrhea, worsening renal function, or neurologic change.
Do not independently change lithium dosing or start electrolyte therapy.
Classic NCLEX memory rule: lithium 0.6-1.2 mEq/L for maintenance; toxicity concern around >=1.5 mEq/L.
Current clinical targets vary by phase of therapy, age, tolerability, and prescriber goal. Monitor renal function, sodium, thyroid function, and pregnancy status when applicable.
Think through the answer before you reveal the rationale.