A client with hyperthyroidism is taking lithium carbonate to inhibit thyroid hormone release. Which complaint by the client should alert the nurse to a problem with the client’s medication?
A. The client complains of difficulty in urination
B. The client is unable to control his or her leg
C. The client complains of hyperventilation
D. The client is unable to sleep
Correct Answer: B. The client is unable to control his or her leg
Option B: The client is experiencing signs of lithium toxicity. Symptoms include ataxia (uncoordinated muscle movement), fine tremors, lack of coordination, tinnitus, blurred vision, nausea, vomiting, and slurred speech.
Options A, C, and D: Dysuria, hyperventilation, and insomnia are not seen with lithium toxicity.