The effect of 2 Hz electro-acupuncture for postoperative pain after total knee arthroplasty

• Main Authors: Chung-Yuh Tzeng, 曾崇育
• Other Authors: 謝慶良
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/35447839060566810450

碩士 === 中國醫藥大學 === 中西醫結合研究所碩士班 === 95 === In order to investigate the analgesic effect of 2 Hz electroacupuncture (EA) for postoperative pain after total knee arthroplasty. We selected 34 patients , who have degenerative knee joint arthritis and need treatment with total knee arthroplasty, they were divided into three groups as follows: control group (CP), patient-controlled analgesia only; EA in acupoint group (EAAG), 2 Hz EA applied to Zusanli (St 36) and Yanlinchand (G34) acupoints that were contralateral to operation site for 30 min except PCA; EA in non-acupoint group (EANAG), the method was identical to EAAG, but 2 Hz EA applied to 1 cm lateral to Zusanli and 1 cm lateral to Yanlinchand acupoints. Visual analgesia scale score (VAS), the time of first demanding PCA, the frequency of PCA, total dose of analgesics and incidence of vomiting within 48 hrs after operation were used as indexes for evaluating EA analgesia. The results indicated that the time of first PCA was more prolonger in the EAAG and EANAG than in CG, whereas the total dose of analgesics and incidence of vomiting were no difference among total dose of analgesic and incidence of vomiting were no difference among the CG, EAAG and EANAG. In conclusion, 2 Hz EA applied to Zusanli and Yanlinchand acupoints, and applied to 1 cm lateral to Zusanli and 1 cm lateral to Yanlinchand acupoints contralateral to total knee arthroplasty, both of them can prolong the time of first demanding PCA, suggesting 2 Hz can potentate the analgesic effect of PCA for postoperative pain after total knee arthroplasty. The analgesic effect of 2Hz EA applied to Zusanli and Yanlinchand acupoints was similar to 2 Hz EA applied to 1cm lateral to Zusanli and 1cm lateral to Yanlinchand acupoints, suggesting EA stimulation applied to the acupoint area that belong to the same nerve or nerve segment may obtain similar effect. Because Zusanli acupoint and 1 cm lateral to Zusanli acupoint, Yanlinchand and 1 cm lateral to Yanlinchand acupoint all belong to the distribution area of deep peroneal nerve and 4th lumbar nerve segment.