异步电针刺激持续时间对冷热痛阈的影响。
The impact of asynchronous electroacupuncture stimulation duration on cold thermal pain threshold.
作者信息
Wang Shu-Ming, Lin Eric C, Maranets Inna, Kain Zeev N
机构信息
Department of Anesthesiology, Yale School of Medicine, New Haven, CT 06520, USA.
出版信息
Anesth Analg. 2009 Sep;109(3):932-5. doi: 10.1213/ane.0b013e3181ad9292.
The durations of asynchronous electroacupuncture can affect the resultant hypoalgesia. Healthy volunteers were randomized to receive different durations (0 min, 20 min, 30 min, or 40 min) of asynchronous electroacupuncture stimulations (alternating low/high [2/100 Hz] frequency at 5 mA). Using a human experimental cold thermal pain threshold model, we found that 30 min of asynchronous 2/100 Hz stimulation resulted in the most significant hypoalgesic effect that was sustained for at least 60 min after stimulation compared with 0-, 20-, or 40-min stimulations (P < 0.05). We conclude that the most optimal duration for asynchronous electroacupuncture stimulation is 30 min.
非同步电针的持续时间会影响产生的痛觉减退效果。健康志愿者被随机分为接受不同持续时间（0分钟、20分钟、30分钟或40分钟）的非同步电针刺激（以5毫安交替施加低/高[2/100赫兹]频率）。使用人体实验性冷热痛阈值模型，我们发现与0分钟、20分钟或40分钟的刺激相比，30分钟的2/100赫兹非同步刺激产生了最显著的痛觉减退效果，且在刺激后至少持续60分钟（P<0.05）。我们得出结论，非同步电针刺激的最佳持续时间为30分钟。
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