The Effect of Acupressure at the Extra 1 Point on Subjective and Autonomic Responses to Needle Insertion.
Arai, Young-Chang P. MD *; Ushida, Takahiro MD *; Osuga, Tomoaki MD *; Matsubara, Takako PT *; Oshima, Kahori +; Kawaguchi, Kana +; Kuwabara, Chiaki +; Nakao, Sigeya +; Hara, Atsushi +; Furuta, Chihiro +; Aida, Erina +; Ra, Shugyoku +; Takagi, Yui +; Watakabe, Kyoko +
Anesthesia & Analgesia.
107(2):661-664, August 2008.
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BACKGROUND: Premedication with sedatives can decrease the discomfort associated with invasive anesthetic procedures. Some researchers have shown that acupressure on the acupuncture extra 1 point is effective for sedation. We investigated whether acupressure on the extra 1 point could alleviate the pain of needle insertion.
METHODS: We investigated the effect of acupressure at the extra 1 point or a sham point on needle insertion using verbal rating scale (VRS) pain scores and heart rate variability (HRV). Twenty-two healthy female volunteers were randomly allocated to two groups: the extra 1 group received acupressure at the extra 1 point, and the sham group received acupressure at a sham point. After starting the electrocardiogram record, a 27-gauge needle was inserted into the skin of a forearm. Thereafter, another needle was inserted into the skin of the other forearm during acupressure.
RESULTS: Acupressure at the extra 1 point significantly reduced the VRS, but acupressure at the sham increased the VRS. Acupressure at the extra 1 significantly reduced the low frequency/high frequency ratio of HRV responding to needle insertion.
CONCLUSIONS: Acupressure at the extra 1 point significantly reduced needle insertion pain compared with acupressure at the sham point. Also, acupressure at the extra 1 point significantly reduced the low frequency/high frequency ratio of HRV responding to needle insertion, which implies a reduction in sympathetic nervous system activity.
(C) 2008 International Anesthesia Research Society