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A relief band that applies transcutaneous electrical nerve stimulation (TENS) at Neiguan P-6 is more effective at relieving post-operative nausea and vomiting (PONV) than a wristband that applies acupressure, Korean researchers have found. Fifty-four patients scheduled for gynaecological surgery under general anaesthesia were randomised to three groups: a control group who received standard general nursing care plus a sham acupressure band (with no button on the inside); an acupressure wrist band group, who received acupressure at Neiguan P-6 via an acupressure ‘sea-band’; and a group who received TENS at Neiguan P-6 via a battery powered acupoint stimulation device worn on the medial side of the wrist. The results indicated that only the TENS relief band reduced the severity of PONV and the need for antiemetic administration within the first 24 hours post-surgery. The acupressure wristband group did not experience significantly reduced nausea and vomiting or decreased anti-emetic use compared with the control group. After transfer to the ward, more than 90 per cent of patients in the control group required antiemetics, whilst in the TENS relief band group only 50 per cent of patients received antiemetics. Approximately 89 per cent and 78 per cent of patients in the control and acupressure groups respectively were administered anti-emetics within two hours after discharge, whilst in the TENS relief band group only 11 per cent of patients required anti-emetics during this time.

Comparing Effects of Two Different Types of Nei-Guan AcupunctureStimulation Devices in Reducing Postoperative Nausea and Vomiting. J Perianesth Nurs. 2017 Jun;32(3):177-187. 

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