A client who uses a hormonal contraceptive is prescribed a three-day aprepitant regimen with chemotherapy. Which teaching should the nurse provide?
1Use an effective nonhormonal backup during treatment and for 28 days after the last dose.✓ Correct answer
2Continue the hormonal method alone because aprepitant increases contraceptive effectiveness.
3Use backup on the first treatment day, then resume the prior method alone.
4Double the hormonal contraceptive dose throughout chemotherapy without prescriber review.
Explanation
Aprepitant can reduce hormonal contraceptive efficacy during treatment and for 28 days after the last dose. The client should use an effective alternative or backup nonhormonal method throughout that interval. Stopping contraception, limiting backup to one day, or independently doubling the hormonal dose does not address the interaction and can cause harm.
Clinical reasoning Aprepitant alters drug-metabolizing pathways and can reduce hormonal exposure beyond the final treatment day. The interaction creates a risk of contraceptive failure.
Decision rule Use effective nonhormonal backup during aprepitant administration and for 28 days after the last dose.
Scenario 34-year-old female on aprepitant for cisplatin-induced nausea prophylaxis. Uses combined OC. Discussing interactions.
Aprepitant — A neurokinin-1 receptor antagonist used with other drugs to prevent chemotherapy-related nausea and vomiting.
Contraceptive interaction — Reduced hormonal contraceptive effectiveness requiring an alternative or backup nonhormonal method during and after aprepitant therapy.