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Anesth Analg. 2008 Aug;107(2):661-4. doi: 10.1213/ane.0b013e31817b8495.

The effect of acupressure at the extra 1 point on subjective and autonomic responses to needle insertion.

Author information

1
Multidisciplinary Pain Center, Aichi Medical University, 21 Karimata, Nagakutecho, Aichigun, Aichi 480-1195, Japan. arainon@aichi-med-u.ac.jp

Abstract

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.

PMID:
18633049
DOI:
10.1213/ane.0b013e31817b8495
[Indexed for MEDLINE]

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