尿管膀胱電図Electro-ureterocystogramの研究 I.尿管電図法による人体尿管収縮波の伝導の速さ並びに周期について

Abstract

A series of electro-ureterograms in situson human ureters w a s studied. Unipolar recordings were taken by placing two active electrod e s in the lumen of the ureter and the indifferent electrode on the skin of the lumber region. This two active electrodes were attached to a ureteral cathet e r at the distance of 10cm, in order to estimate the rate of the peristalsis of the ureter. The time constant of the amblifier was set at 0.25 s ec. Relations between the respiration and electro-uret e rogram were studied by placing a thermo-couple in front of the nostrils. The results are as follows: 1. No interference was noticed from respiration in the electro-ureterograms by this method, though bodily and/or heart activities were occasionally noticed. 2. Periods of the peristalsis were 9.5-44.5 sec. of the 12 u reters in 11 cases, which were considered to be normal, and the rate of the peristalsis was 4.5±1.8 cm/sec. The differences of the rate between each individual were remarkable, b ut almost constant, despite lapse of time at the same section in each individual ureter. The rate seems to have neither any difference due to the se c tion of the ureter, nor any definite relation to the period. 3. In the cases of neuro g enic bladder, the peristalsis of the ureters was quite irrgular and at the same time each travelling could not be traced, therefore the estimation of its rate was impossible. 4. Th e rate of the peristalsis was normal in cases of kidney tuberculosis in which the inter vanous pvelograms showed nonpatholoaical ureters.