RN Exam Practice
Physiological AdaptationQuestion 577 of 2368

Which finding is an early sign of lithium toxicity?

  1. Fine hand tremor and mild thirst
  2. Diarrhea, drowsiness, and lack of coordination
  3. Sustained increase in blood pressure
  4. Dark red color of the urine
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Correct answer: Diarrhea, drowsiness, and lack of coordination

Early toxicity includes diarrhea, vomiting, drowsiness, muscular weakness, and lack of coordination. Tremor and thirst may persist during normal treatment.

Source: Nursing Pharmacology, 2nd edition (Open RN, Chippewa Valley Technical College, 2023), Central Nervous System: Lithium. Licensed under CC BY 4.0.

Practice the topic "Physiological Adaptation"

Questions last reviewed: 18 October 2026