Color Doppler
imaging (CDI) can be used to noninvasively create images of human blood vessels
and quantitatively evaluate blood flow in real-time. The purpose of this study
was to assess the effects of acupuncture on the blood flow of the peripheral,
mesenteric, and retrobulbar arteries by CDI. Statistical significance was
defined as P values less than 0.05. Blood
flow in the radial and brachial arteries was significantly lower during needle
stimulation on LR3 than before in healthy volunteers, but was significantly
higher after needle stimulation than before. LR3 stimulation also resulted in a
significant decrease in the vascular resistance of the short posterior ciliary
artery and no significant change of blood flow through the superior mesenteric
artery (SMA) during acupuncture. In contrast, ST36 stimulation resulted in a
significant increase in blood flow through the SMA and no significant change in
the vascular resistance of the retrobulbar arteries. Additionally, acupuncture
at previously determined acupoints in patients with open-angle glaucoma led to
a significant reduction in the vascular resistance of the central retinal
artery and short posterior ciliary artery. Our results suggest that acupuncture
can affect blood flow of the peripheral, mesenteric, and retrobulbar arteries,
and CDI can be useful to evaluate hemodynamic changes by acupuncture.
References
Shin
Takayama, et al Evid Based Complement Alternat Med. 2012; 2012:
513638.
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