[Control of blood flow in nasal mucosa by electro-stimulation of sphenopalatine ganglion].
The effects of control of blood flow on cat nasal mucosa by stimulating sphenopalatine ganglion (SPG) were studied using laser Doppler flowmetry in order to investigate the role of SPG. The study showed that the stimulation on one side of SPG could induce vasodilation, with increased blood flow, as well as protective reflexes on both sides. The reactivity depended on the stimulation intensity, frequency and duration. The stimulation on one side of postganglionic parasympathetic nerves, in which the stellate ganglion was resected, caused vasodilation only ipsilaterally. The results indicated that the vasodilation induced by stimulating SPG might be mediated via central reflex arc. The "reverse blood regulation" phenomenon was observed during stimulation of SPG as well. The mechanisms of "reverse blood regulation" induced by stimulating SPG need further investigation.
Zheng
C
C
Eye Ear Nose and Throat Hospital, Shanghai.
Wang
Z
Z
D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D005260:Female; D005726:Ganglia, Parasympathetic / Q000502:physiology*; D017078:Laser-Doppler Flowmetry; D008297:Male; D009297:Nasal Mucosa / Q000098:blood supply*; D012039:Regional Blood Flow