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| Transcutaneous electric acupoint stimulation alleviates remifentanil-induced hyperalgesia in patients undergoing thyroidectomy: a randomized controlled trial |
| Chen Y, Yao Y, Wu Y, Dai D, Zhao Q, Qiu L |
| International Journal of Clinical and Experimental Medicine 2015;8(4):5781-5787 |
| clinical trial |
| 6/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; 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* |
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BACKGROUND: In this prospective, randomized, double-blind study, we verified the hypothesis that TEAS can alleviate remifentanil-induced hyperalgesia in patients undergoing thyroidectomy. METHODS: 60 American Society of Anesthesiologists physical status (ASA) I to II patients, aged 18 to 60 year, scheduled for thyroidectomy were randomly allocated to TEAS or sham groups. TEAS consisted of 30 min of stimulation (6 to 9 mA, 2/10 Hz) on the Hegu (LI4) and Neiguan (PC6) before anesthesia. Anesthesia was maintained with sevoflurane adjusted to bispectral index (40 to 60) and target remifentanil 5.0 ng/ml. Mechanical pain thresholds were assessed using electronic von Frey. The primary outcome was mechanical pain thresholds. Secondary outcomes included postoperative pain scores, the time to first rescue analgesic, cumulative number of rescue analgesia, and side effects, including postoperative nausea and vomiting (PONV), dizziness and shivering in 24 h postoperatively. RESULTS: Baseline mechanical pain thresholds were similar between the groups. The analysis revealed the decrease in mechanical threshold was greater in the sham group than the TEAS group (p < 0.001). Postoperative pain scores and cumulative number of rescue analgesia were lower in the TEAS group (p < 0.05). In addition, TEAS group patients reduced the incidence of PONV and shivering. CONCLUSION: Preoperative TEAS can attenuate remifentanil-induced hyperalgesia in patients undergoing thyroidectomy.
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