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Can transcutaneous electrical acupoint stimulation reduce the risk of postoperative nausea and vomiting?

moderate confidence  ·  Last reviewed May 18, 2026

Postoperative nausea and vomiting (PONV) is a common and distressing complication after surgery. Transcutaneous electrical acupoint stimulation (TEAS) is a non-invasive technique that uses mild electrical pulses on specific acupoints, often at the wrist (PC6). Research suggests TEAS may help prevent PONV, but results vary depending on the type of surgery and other factors.

What the research says

A large meta-analysis of 33 studies involving over 6,200 patients undergoing laparoscopic surgery found that TEAS significantly reduced the incidence of PONV within 24 hours after surgery compared to no treatment or sham stimulation 3. The need for rescue antiemetic medications was also lower in the TEAS group 3. Another meta-analysis of 59 trials (including various surgeries) found that PC6 acupoint stimulation (including TEAS) reduced the risk of nausea and vomiting compared to sham treatment 8.

However, not all studies show a benefit. A 2024 multicenter trial in patients undergoing hepatectomy (liver surgery) found that adding TEAS at PC6 to a standard antiemetic regimen did not significantly reduce PONV within 24 hours 4. The authors noted that TEAS might still reduce the need for pain medication 4. A 2023 trial in breast surgery patients found that TEAS was non-inferior to the antiemetic drug dexamethasone for preventing PONV, meaning TEAS worked about as well as the drug 7.

The exact mechanism is not fully understood, but TEAS may activate the brain-gut axis and regulate autonomic nerve function 6. Overall, the strongest evidence supports TEAS for laparoscopic surgery, while results for other surgeries are mixed.

What to ask your doctor

  • Would TEAS be appropriate for my type of surgery to help prevent PONV?
  • How does TEAS compare with standard antiemetic medications for my situation?
  • Are there any risks or side effects of TEAS I should know about?
  • Can TEAS be used together with other antiemetic treatments?
  • Where can I receive TEAS, and is it available at my surgical center?

This question is drawn from common patient questions about Emergency Medicine and answered using cited medical research. We do not provide individualized advice.