Electroacupuncture Plus Antiemetic Therapy for Chemotherapy-Induced Nausea and Vomiting in Patients With Breast Cancer

Participants in this arm will undergo electroacupuncture sessions once daily from day 1 to day 4. Electrical stimulation will be administered for 30 minutes at alternating frequencies of 2/10Hz

Participants will receive oral olanzapine at a dose of 5 mg per day on days 1 through 4, along with NK1 receptor antagonist, 5HT3 receptor antagonist, and intravenous dexamethasone at a dose of 10 mg 30 minutes prior to chemotherapy on Day 1, followed by intravenous dexamethasone at a dose of 8 mg on days 2, 3, and 4 post-chemotherapy.

Participants assigned to this arm will receive sham electroacupuncture sessions daily from day 1 to day 4, mirroring the schedule of the experimental group

They will also receive the same antiemetic medications as the experimental group.