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Transcutaneous electrical nerve stimulation at acupuncture points in the induction of uterine contractions
Dunn PA, Rogers D, Halford K
Obstetrics and Gynecology 1989 Feb;73(2):286-290
clinical trial
3/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The effectiveness of transcutaneous electrical stimulation at acupuncture points for increasing uterine contractions in 20 post-dates pregnant women was assessed in a controlled study. Subjects were randomly assigned to either a treatment condition, consisting of the application via surface electrodes of a 30-Hz current to the points "spleen 6" (lower leg) and "liver 3" (foot), or a placebo condition, in which the equipment was attached but not activated. The frequency and strength of uterine contractions were monitored for 1 hour prior to stimulation and then for the final 2 hours of a 4-hour test period. A significant increase in frequency and strength of uterine contractions was found in the electrically stimulated women compared with the placebo-group women. The possible physiologic mechanisms underlying this effect, and its implication for labor induction, are discussed.
With permission from Excerpta Medica Inc.

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