An interventional study of SGB and taVNS in Sleep Disorder (Disorder), sponsored by Affiliated Hospital of Jiaxing University. Not yet recruiting. Open to female participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-09-29.
Sponsored by Affiliated Hospital of Jiaxing University · Not applicable, Interventional, and Prevention
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.
747 studies on the registry are indexed under Sleep Wake Disorders; 182 are open to participants now.
This study's planned enrollment of 136 is above the median of 66 across 531 interventional studies indexed under Sleep Wake Disorders.
Browse Sleep Wake Disorders studies →Affiliated Hospital of Jiaxing University is the lead sponsor of 17 studies on the registry; 10 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before the induction of anesthesia in the operating room, a skilled anesthesiologist performed a SGB under sterile conditions using real-time ultrasound in a blind grouping manner.
Procedure: SGB
Three stimulations of transcutaneous auricular vagus nerve stimulation (taVNS) were administered to the patients
Device: taVNS
Before the induction of anesthesia in the operating room, a skilled anesthesiologist performed a SGB under sterile conditions using real-time ultrasound in a blind grouping manner. The patient was positioned supine with the neck slightly rotated to the left. A linear probe (6-13 MHz) was placed on the neck to clearly visualize the carotid artery, internal jugular vein, vertebral artery, vagus nerve, thyroid gland, esophagus, scalene muscles, and the anterior scalene muscle at the C6 level. Subsequently, a 48mm, 20-gauge needle was inserted in a "plane" direction into the prevertebral fascia of the anterior scalene muscle. After the needle tip penetrated the prevertebral fascia and negative pressure aspiration was confirmed, 3ml of 0.5% ropivacaine was injected, and the diffusion of the local anesthetic was observed under ultrasound guidance.
Three stimulations of transcutaneous auricular vagus nerve stimulation (taVNS) were administered to the patients: ① According to the manufacturer's recommendations and previous studies \[32\], the initial adjustment required electrical stimulation to penetrate the skin barrier. The first intervention was conducted one day prior to the surgery, with an initial electrical stimulation frequency set at 30 Hz and a pulse width of 300 μs. The frequency and pulse width were adjusted based on the individual patient's sensations until the maximum tolerable current stimulation was reached without discomfort, lasting for 30 minutes; ② The second intervention occurred immediately after the patient was connected to the monitoring equipment in the operating room, once their vital signs were confirmed to be within normal ranges. The same stimulation frequency as the first intervention was applied for 30 minutes; ③ The third intervention was administered in the recovery room after the patient's surgery
Total Sleep Time on the First Night Post-Surgery
Total Sleep Time Monitored by Actigraphy on the First Night Post-Surgery
Time frame: the First Night Post-Surgery
Total sleep time from the second to the fourth night post-surgery
Total sleep time each night from the second to the fourth night post-surgery by Actigraphy
Time frame: the second to the fourth night post-surgery
Assessment of sleep quality during the first four nights postoperatively
Assessment of sleep quality using the Richards-Campbell Sleep Questionnaire(RCSQ) sleep questionnaire during the first four nights postoperatively. The total score is 150 points, with the minimum score being 0 points. A higher score indicates better postoperative sleep quality.
Time frame: during the first four nights postoperatively
sleep quality and the incidence of sleep disturbances on the 30th postoperative day
On the 30th postoperative day, the Pittsburgh Sleep Quality Index (PSQI) will be used to assess subjective sleep quality and the incidence of sleep disturbances.The score ranges from 0 to 21 points, with higher scores indicating worse postoperative sleep quality.A score greater than 7 indicates the presence of sleep disturbance.
Time frame: On the 30th postoperative day
The incidence of all complications and mortality within 72 hours postoperatively
The incidence of all complications and mortality within 72 hours postoperatively
Time frame: within 72 hours postoperatively
Quality of Recovery score at 24 hours postoperatively (QoR-15).
Quality of Recovery score at 24 hours postoperatively (QoR-15). The score ranges from 0 to 150 points, with higher scores indicating better postoperative recovery quality.
Time frame: at 24 hours postoperatively
No study locations are listed for this record.
Plan to share: Yes
Supporting information: Study protocol
No publications or documents are linked to this record.
Start is estimated for Dec 2026; primary completion for Dec 2029, 36 months later.
Of 208 non-industry interventional studies with no phase under Sleep Wake Disorders, half reached primary completion within 21 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 40. This study's planned 36 months is above that.
Counting every sponsor, half of 243 studies reached it within 19 months; a quarter within 6 and three quarters within 37.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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Affiliated Hospital of Jiaxing University