The nurse receives a phone call from an adolescent client who has been taking lithium for two weeks. The client states, "I feel faint and my heart seems to be going faster. Which action by the nurse is best?
a. Ask the client to describe the daily intake of energy drinks.
b. Ask if the client is experiencing hand tremors.
c. Instruct the client to drink 8 to 12 glasses of water daily.
d. Instruct the client to restrict daily sodium intake.