Final answer:
Before administering the first dose of risperidone to a client with schizophrenia, the nurse should obtain a fasting blood glucose test to monitor for the development of hyperglycemia, an adverse effect of risperidone.
Step-by-step explanation:
Before administering the first dose of risperidone to a client with schizophrenia, the nurse should plan to obtain a fasting blood glucose test.
This is because the development of hyperglycemia can be an adverse effect of risperidone. By checking the client's blood glucose level before starting the medication, the nurse can establish a baseline and monitor for any changes throughout the treatment.