The client is receiving phenytoin, a drug with a narrow therapeutic index, and asks the nurse why he has to have blood drawn so often. What is the best response by the nurse?
1. Regular blood tests help ensure that the medication is at the right level to control your seizures.
2. Monitoring your blood levels helps prevent toxicity or side effects from the medication.
3. We need to check your blood levels frequently to adjust your dosage for optimal seizure control.
4. The frequency of blood tests helps ensure the medication is effectively managing your condition without causing harm.
