Sun S Y, Ho S Y
Sheng Li Xue Bao. 1989 Feb;41(1):85-90.
In 46 anesthetized rabbits, the sympathetic efferent discharges in different vascular regions were recorded during the Bezold-Jarisch reflex induced by intracoronary injection of nicotine. The discharges of renal nerve, cardiac nerve, splenic nerve, ramus of stellate ganglion to cervical plexus and ramus of superior cervical ganglion to external carotid artery decreased significantly following injection of nicotine. The decrease in efferent discharge is more prominent in renal, cardiac and splenic nerves than in the other two nerves. These results demonstrated that the reduction in discharge of sympathetic efferent fibers of different regions and hence decrease in total peripheral resistance might play a significant role in initiating hypotension during the Bezold-Jarisch reflex.
在46只麻醉兔中，记录了冠状动脉内注射尼古丁诱发贝佐尔德-雅里什反射期间不同血管区域的交感传出放电。注射尼古丁后，肾神经、心神经、脾神经、星状神经节至颈丛的分支以及颈上神经节至颈外动脉的分支的放电显著减少。传出放电的减少在肾神经、心神经和脾神经中比在其他两条神经中更明显。这些结果表明，不同区域交感传出纤维放电的减少以及由此导致的总外周阻力降低，可能在贝佐尔德-雅里什反射期间引发低血压中起重要作用。
