Final answer:
The nurse should include instructions on proper dosage, sodium and fluid intake, and signs of lithium toxicity in medication teaching for Mrs. Cole and her husband regarding lithium therapy.
Step-by-step explanation:
When teaching Mrs. Cole and her husband about lithium therapy, the nurse should include the following instruction:
- Take the medication as prescribed by the doctor and do not adjust the dosage without consulting the healthcare provider.
- Maintain a consistent level of sodium and fluid intake to prevent dehydration and maintain kidney function.
- Be aware of the signs and symptoms of lithium toxicity, such as nausea, vomiting, diarrhea, tremors, and confusion, and report them immediately to the healthcare provider.