Acupuncture for Birth Preparation and Delivery: How Investigating Mechanisms of Action Can Generate Research

Acupuncture has become an accepted and validated part of Western mainstream medicine and is increasingly used by clinicians, midwives, and acupuncturists for reproductive care, induction of labor, and analgesia. Most studies of the effects of obstetrical acupuncture are descriptive, many in foreign languages. Only a few have evaluated efficacy. Results suggest that acupuncture ripens the cervix, initiates labor, reduces labor pain, and shortens the first stage of labor. There is some evidence suggesting that certain acupuncture points have very specific effects on the fetus and uterus, which may be mediated through the hypopituitary-thalamic axis or by local neurovascular stimulation. The substantial maternal hormonal changes occurring just before and during labor offer a unique opportunity to clarify the mechanisms of action of acupuncture. Using a conceptual model based on possible mechanisms of action of the use of acupuncture in obstetrics, the authors propose specific research questions into the physiology of acupuncture administered before and at parturition.