上部尿路の活動電位の研究 : 第4報成犬における切断上部尿管と尿管口とをカテーテルにて接合せる時の切断下部尿管の動態

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A recent report from this laboratory has shown that when the upper and lower segments of the sectioned ureter are communicated through a vinyl catheter (reconstructed ureter), the excitation is caused by urine flow at the connected part of the lower segment, independently of the upper segment, and the normal urine transporting ability is retained, judging from the myogram of ureter (S. Takahashi, Jap. J. Urol., 65(5), 303, 1974). The primary purpose of the present experiment was to compare the action potentials and the pressure waves of the ureter which was sectioned transversely at the central part and reconstructed between the upper segment and the ureteral orifice (reversely connected ureter) with those of the intact ureter and the reconstructed ureter. In this experiment, 16 ureters from 8 mongrel dogs were used: first of all, 16 intact ureters were used as control, and then surgery was performed to make a reversely connected ureter in which urine was allowed to pass reversely from the ureteral orifice to the kidney. The results obtained are as follows : I) in all control ureters, the peristalsis was observed with a concomitant appearance of pressure waves, except 1 which showed antiperistalsis; 2) in the reversely connected ureters (16), 13 showed anti-peristalsis with a concomitant appearance of pressure waves, and of the other 3, 1 retained anti-peristalsis and the other 2 retained normal peristalsis after surgery; 3) between the reconstructed ureter and the reversely connected ureter, no significant differences were seen in the amplitude, duration, propagation rate, frequency of action potentials and the intraluminal pressure of the ureter.
社団法人日本泌尿器科学会の論文

上部尿路の活動電位の研究 : 第4報成犬における切断上部尿管と尿管口とをカテーテルにて接合せる時の切断下部尿管の動態

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