Dundee J W
Ulster Med J. 1990 Apr;59(1):63-70.
In a strictly controlled clinical situation, (postoperative sickness) where variables were reduced to a minimum, it was possible to demonstrate an effective prophylactic antiemetic action of P6 (Neiguan) acupuncture. Manual and electrical invasive (needling) stimulation of this point were equally effective. Non-invasive stimulation (transcutaneous electrical or pressure) was effective in the early postoperative period, but the effect did not last as long as for invasive acupuncture--although it was as good as standard antiemetics. Stimulation of a "dummy" acupuncture point was ineffective as was administration of the acupuncture after the emetic stimulus (opioid). This effect can be blocked by local anaesthesia at the P6 point. Acupressure (P6) is moderately effective in reducing morning sickness, but here there is more of a psychological element as pressure on a "dummy" point gives some alleviation of symptoms. Given in conjunction with standard antiemetics, P6 acupuncture is a useful adjuvant in reducing sickness after cancer chemotherapy. This effect can be prolonged for 24 hours by acupressure.
在严格控制的临床情况下（术后恶心呕吐），即变量降至最低时，有可能证明P6（内关）穴位针刺具有有效的预防性止吐作用。对此穴位进行手动和电侵入性（针刺）刺激同样有效。非侵入性刺激（经皮电刺激或按压）在术后早期有效，但效果持续时间不如侵入性针刺长——尽管其效果与标准止吐药相当。刺激“假”穴位无效，在催吐刺激（阿片类药物）后进行针刺也无效。P6穴位局部麻醉可阻断这种作用。穴位按压（P6）在减轻晨吐方面有一定效果，但这里存在更多心理因素，因为按压“假”穴位也能在一定程度上缓解症状。与标准止吐药联合使用时，P6穴位针刺是减轻癌症化疗后恶心呕吐的有用辅助手段。通过穴位按压，这种效果可延长24小时。
