Skip to main content


Table 5 Descriptions of the four common methods of sham-acupuncture

From: Electroacupuncture for the prevention of postoperative gastrointestinal dysfunction in participants undergoing vascular laparotomy under general anesthesia: a randomized controlled trial

Advantages Limitations Indications
 Fine masking Not suitable Insistent estimation
 Low stimulation For all acupoints Without EA history
   Acupoints on back
 Fine masking Can’t avoid Different ganglion segment
 Better feasibility Physiological effect Without EA history
Study on acupoints’ specificity
Shallow acupuncture
 Better masking Narrow indication Study on depths of needling
 Low stimulation
Non-disease-related acupuncture
 Better masking Low feasibility Without EA history
 Lowest bias Study on acupoints’ specificity