Final answer:
The patient should prepare an as-needed dose of ondansetron for the patient experiencing chemotherapy-induced nausea.
Step-by-step explanation:
The patient should prepare an as-needed dose of ondansetron for the patient experiencing nausea from chemotherapy. Ondansetron is a medication commonly used to prevent nausea and vomiting caused by cancer chemotherapy, radiation therapy, or surgery. It works by blocking the action of chemicals in the body that trigger nausea and vomiting.