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

This study is a randomized controlled trial conducted in parallel groups, with blinding implemented. It aims to assess the effectiveness of combining electroacupuncture with standard quadruple antiemetic drugs for patients with breast cancer undergoing HEC. Both study arms will be administered Olanzapine, Neurokinin-1 receptor antagonists, serotonin receptor antagonists, and dexamethasone at the commencement of HEC on Day 1. Subsequently, participants will be randomly assigned to receive either electroacupuncture or sham acupuncture. Participants will be responsible for recording all instances of nausea and vomiting, as well as documenting the use of rescue antiemetic medications. The study will evaluate primary and secondary outcomes, as well as monitor adverse events.