CEN Practice Exam (Certified Emergency Nurse)

Answer: D - The nurse should expect the patient’s lithium level to be 1.8 mEq/L. The normal lithium level is 0.6 to 1.2 mEq/L. A lithium level of 1.8 mEq/L indicates a mild toxicity. Levels between 1.5 and 2.5 mEq/L would indicate symptoms of vomiting, diarrhea, ataxia, incoordination, muscle twitching and slurred speech.