Journal Publication

Preoperative acupoint stimulation cuts post-mastectomy pain in sleep-disturbed patients

A 59-patient trial links preoperative TEAS to lower pain scores and better sleep after breast cancer surgery, with reduced intraoperative blood pressure swings as a possible mechanism.

By AppliedXLJuly 15, 2026

Executive Summary

A trial in breast cancer surgery patients examined whether a preoperative acupoint stimulation technique could offset the pain and sleep consequences of preoperative insomnia.
Patients who received the stimulation reported less pain and better sleep after surgery than sleep-disturbed patients who did not, and showed steadier blood pressure during the operation.
The results point to preoperative sleep quality as a measurable predictor of postoperative recovery and to acupoint stimulation as a candidate low-cost intervention worth testing at larger scale.

The stake

Preoperative sleep disturbance is common before breast cancer surgery and has been linked to worse postoperative pain and slower recovery. The trial tested whether TEAS, a needle-free electrical stimulation applied at acupuncture points, could counter that effect when delivered before anesthesia. The question matters clinically because pain control after mastectomy and related procedures shapes early recovery, opioid use, and patient-reported outcomes, and a non-drug intervention that improves both pain and sleep would be a low-risk addition to perioperative protocols. Preoperative

How it was done

The trial enrolled 59 breast cancer patients aged 37 to 70 and stratified them by Pittsburgh Sleep Quality Index (PSQI) score, a validated sleep-quality measure. Patients scoring below 6 (better sleep) were assigned to a non-randomized control group of 26. Patients scoring 6 or above (disturbed sleep) were randomized 1:1 into a sleep-disturbance group of 16 and a TEAS group of 17, for a total randomized comparison of 33 patients. The TEAS group received stimulation at the LI4, HT7, and PC6 acupoints (2/100 Hz, 8 to 12 mA, 30 minutes) before anesthesia. Pain was measured with the Numerical Rating Scale at 4, 24, 48, and 72 hours after surgery, sleep with the Athens Insomnia Scale, and intraoperative blood pressure variability was recorded as a physiological correlate. Preoperative

The results

The untreated sleep-disturbed group (Group S) had higher pain scores than the good-sleep control group at 24, 48, and 72 hours after surgery (p < 0.05), confirming that preoperative sleep disturbance tracked with worse postoperative pain in this cohort. TEAS reduced pain scores at all four measured timepoints compared with the untreated sleep-disturbed group (p < 0.05) and improved insomnia scale scores on postoperative days one and two (p < 0.05). Preoperative

A secondary finding: blood pressure stability

Patients who received TEAS also showed lower intraoperative systolic blood pressure variability than the untreated sleep-disturbed group, with standard deviation of systolic pressure at 9.31 versus 18.85 and coefficient of variation at 0.08 versus 0.16 (p < 0.05 for both). The researchers noted the pain and sleep benefits were possibly associated with this reduced hemodynamic variability, offering a physiological correlate rather than a proven mechanism for the clinical effect. Among patients who did not receive TEAS, higher preoperative PSQI scores correlated with higher postoperative pain and insomnia scores, reinforcing preoperative sleep quality as a marker worth tracking before surgery. Preoperative

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