Yamaguchi O
Invest Urol. 1978 Sep;16(2):99-105.
The transport efficiency of ureteral peristalsis under the control of the pacemaker was examined during renal pelvic perfusion in dogs. Simultaneous recordings of the perfusion rate, renal pelvic pressure, ureteral electromyogram, and bolus volume were made during each period of perfusion at a constant rate. For a graphic representation of transport efficiency of each peristaltic contraction, changes in balance level between the perfusion rate and the bolus volume were registered by a presettable binary counter. A quantitative evaluation of transport efficiency was also made of each group of peristaltic contractions that was classified by its characteristic distribution of the interperistaltic internal. The pacemaker activity of the renal pelvis and its control of ureteral peristalsis were identified in this preparation. Most of the peristaltic contractions excreted the same volume of fluid that had entered the pelviureteral system during the preceding period of nonperistalsis within the range of studied perfusion rates. The transport efficiency defined as interperistaltic interval x perfusion rate/bolus volume showed a small variation around the value 1 for peristaltic contractions in each group.
在犬肾盂灌注过程中，研究了起搏器控制下输尿管蠕动的输送效率。在每个恒定灌注速率的灌注期内，同时记录灌注速率、肾盂压力、输尿管肌电图和推注体积。为了直观呈现每次蠕动收缩的输送效率，通过预设的二进制计数器记录灌注速率和推注体积之间平衡水平的变化。还对根据蠕动间期内部特征分布分类的每组蠕动收缩的输送效率进行了定量评估。在此实验准备中确定了肾盂的起搏器活动及其对输尿管蠕动的控制。在研究的灌注速率范围内，大多数蠕动收缩排出的液体量与前一非蠕动期进入肾盂输尿管系统的液体量相同。每组蠕动收缩的输送效率定义为蠕动间期×灌注速率/推注体积，其值在1左右有较小变化。
