Nausea and vomiting are common adverse effects of radiation and chemotherapy. When should a nurse administer antiemetics?
A. When therapy is completed
B. Immediately after nausea begins
C. With the administration of therapy
D. 30 minutes before the initiation of therapy
Correct Answer: D. 30 minutes before the initiation of therapy
Option D: Antiemetics are most beneficial when given before the onset of nausea and vomiting. To calculate the optimum time for administration, the first dose is given 30 minutes to 1 hour before nausea is expected, and then every 2, 4, or 6 hours for approximately 24 hours after chemotherapy.
Options A, B, and C: If the antiemetic was given with the medication or after the medication, it could lose its maximum effectiveness when needed.