“…In addition, pain stimulates the sympathetic nervous system and causes increases in the heart rate, blood pressure, sweat production, and endocrine hyperfunction, and delays the patient′s prognosis (Edwards, et al, 2007;Kumar&Wilson, 2007). To date, only a few studies have investigated the effects of acupuncture on postoperative pain and have shown conflicting results (Christensen, et al, 1989;Christensen, et al, 1993;Galloway, et al, 1984;Martelete&Fiori, 1985). A critical difference among these studies was the stimulation modality and the lack of a sham control.…”