碘化二甲基木防已碱(Dimethyltrilobine iodide简称DTI),在整体动物实验有降低血压和交感神经节阻断作用。本文以蔗糖间隙法,在离体兔颈上交感神经节标本上进行了实验研究。 将离体兔颈上交感神经节及其节前、节后纤维置于蔗糖间隙装置中,神经节室容积为1ml,Krebs液流速2—3ml/min,以方波刺激节前纤维,波宽0.2ms,频率30c/min, Dimethyltrilobine iodide (DTI) is used to reduce blood pressure and block sympathetic ganglia in whole animal experiments. In this paper, an experimental study was performed on isolated cervical upper sympathetic ganglion specimens using the sucrose gap method. The upper sympathetic ganglia of the rabbit’s neck and its preganglionic and postganglionic fibers were placed in a sucrose gap device. The ganglion chamber volume was 1 ml and the Krebs flow rate was 2-3 ml/min. The square wave stimulated the presegmental fibers and the wave width. 0.2ms, frequency 30c/min,