Focused Ultrasound PC-6 Stimulation Effects on Blood Flow Volume, Skin Temperature, and Coldness of the Finger and Toe

Noriko Tsuruoka, Shingo Katayama, Takashi Seki, Tadao Matsunaga, Ryuta Iijima, Yoichi Haga

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Introduction: Focused ultrasound can stimulate a specific point of tissue and can be a noninvasive method for acupoint stimulation. The aim of this study was to clarify the effects of acupoint stimulation by focused ultrasound on blood flow volume and coldness of the fingers and toes. Materials and Methods: Forty healthy volunteers were included in this experiment. The blood flow volume and the skin temperature of a finger and toe were measured before and after stimulation of the pericardium 6 acupuncture point (PC-6) by focused ultrasound. Subjective coldness of the fingers and toes was also assessed using a visual analog scale (VAS) before and after stimulation. Results: The maximum blood flow volumes of the finger and toe were significantly larger (p < 0.01) than those before stimulation. The maximum skin surface temperatures of the fingers were significantly higher (p < 0.01) than those before stimulation. The VAS scores for subjective coldness of the toes after stimulation were significantly higher (p < 0.01). Conclusion: The blood flow volume and skin temperature tended to increase after PC-6 stimulation. The VAS scores also indicated a tendency toward a warmer sensation in the toes after stimulation.

Original languageEnglish
Pages (from-to)404-409
Number of pages6
JournalComplementary Medicine Research
Volume26
Issue number6
DOIs
Publication statusPublished - 2019 Dec 1

Keywords

  • Acupuncture
  • Blood flow volume
  • Coldness
  • Focused ultrasound
  • Skin temperature

ASJC Scopus subject areas

  • Complementary and alternative medicine

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