Abstract: Objective Observation of labor analgesia acupuncture and action mechanism of the clinical effect, looking for a safe and effective, simple and convenient method of labor analgesia. Methods The stochastic sampling method choice acupuncture group 16 examples, the acupuncture + electricity stimulation group 29 examples and the control group 46 examples, (VRS ache staging) evaluate the analgesic effect by the visual simulation grading law, the record course of childbirth progress and the postpartum hemorrhage situation, the newborn Apgar grading and the newborn body mass, the observation acupuncture to the maternal infant the influence. (HPLC) examines around the acupuncture with the highly effective liquid phase chromatography in the peripheral blood noradrenalin (NA) and β-endorphin (β-EP) the content change, discusses this method the analgesia mechanism. Results After acupuncture analgesia, the VAS grading drops, the ache alleviation rate 82.76%, are higher than the control group obviously 17.94%, and enhances in obviously the peripheral blood β-EP the density, after the acupuncture, the blood β-EP and NA respectively be 5.20±0.93 mg/L and 1230±18ng/L, obviously is higher than the control group 4.38±0.67mg/L and 783±31ng/L(P<0.05). Conclusions The acupuncture can reduce the first course of childbirth childbirth ache effectively, its analgesic effect possibly is enables in the brain through the acupuncture to have the analgesia function to hand over the nature β-EP content to increase obviously concerns.

Key words: Acupuncture analgesia, Childbirth, labor