A nurse is caring for a client who has bipolar disorder and has been taking lithium for 1 year. Before administering the medication, the nurse should check to see that which of the following tests have been completed?

A. "I'll be glad when I can stop taking this medicine.": This statement indicates a misunderstanding about phenytoin therapy. Phenytoin is typically a long-term medication used to prevent seizures, and it is not typically discontinued unless under the guidance of a healthcare provider. The nurse should clarify that stopping the medication abruptly can lead to rebound seizures and should emphasize the importance of continuing the medication as prescribed.

B. "I have made an appointment to see my dentist next week.": This statement indicates appropriate understanding, as regular dental check-ups are important for individuals taking phenytoin due to the medication's potential side effect of gingival hyperplasia.

C. "I know that I cannot switch brands of this medication.": This statement demonstrates understanding, as different brands of phenytoin can have variations in bioavailability, which can affect seizure control. It is important for clients to remain consistent with the same brand or formulation unless directed otherwise by their healthcare provider.

D. "I will notify my doctor before taking any other medications.": This statement indicates understanding of the potential for drug interactions with phenytoin, as it is a hepatic enzyme inducer and can affect the metabolism of other medications. Clients should always consult their healthcare provider before taking any new medications or supplements to ensure compatibility with phenytoin therapy.

A. Documents medication administration prior to administering it: Documenting medication administration before actually administering it is incorrect and can lead to errors in documentation. The nurse should document medication administration after ensuring the medication is given to the client.

B. Verifies the medication against the prescription and medication label: This is a correct action. The nurse should verify the medication against the prescription and medication label to ensure accuracy before administering it.

C. Checks the provider's orders and confirmed dosage in a medication reference guide: This is a correct action. The nurse should check the provider's orders and confirm the dosage in a reliable medication reference guide to ensure accuracy before administering the medication.

D. Scans the barcode on the medication administration record and the client's armband: This is a correct action. Scanning the barcode on the medication administration record and the client's armband helps ensure the "Five Rights" of medication administration: right patient, right medication, right dose, right route, and right time.