Effects of Ultrasound-Guided Stellate Ganglion Block and Transcutaneous Auricular Vagus Nerve Stimulation on Sleep Quality After Radical Mastectomy for Breast Cancer

This study aims to design a prospective, randomized, controlled, dual-center, non-inferiority trial to compare the effects of ultrasound-guided sympathetic ganglion block (SGB) and transcutaneous auricular vagus nerve stimulation (taVNS) on sleep quality following radical mastectomy for breast cancer. The objective is to explore whether non-invasive neuromodulation for sleep is non-inferior to invasive neuromodulation. Participants will be randomly assigned to receive either SGB or taVNS treatment. Sleep quality will be assessed using an actigraphy device and sleep scales within four days post-surgery, and the incidence of sleep disturbances will be followed up within 30 days post-surgery.