Djurhuus J C, Saksø P, Mortensen J
J Urol. 1986 Mar;135(3):648-51. doi: 10.1016/s0022-5347(17)45769-7.
In five pigs weighing approximately 85 kg. the pelvic pressure-volume relationship was investigated. Through a catheter introduced into the renal pelvis from the ureter with ligation at the ureteropelvic junction, a continuous filling of one ml./minute was established. After drainage of the pelvis filling was begun showing an exponential relationship between pressure and volume. Fillings in all of the units confined the equation y = a + bx + cx2. Emptying showed unanimously clockwise hysteresis although 1/3 of the fillings revealed active contractile forces with an inverted S-shaped emptying curve. The normal multicalyceal renal pelvis in pigs of the same size showed a wide range of pressure-volume relationships both between individuals and between the two investigations. This wide range might be of importance in the development of dilatations due to obstruction.
在五只体重约85千克的猪身上，研究了肾盂压力-容积关系。通过一根从输尿管插入肾盂并在输尿管肾盂交界处结扎的导管，以每分钟1毫升的速度进行持续灌注。肾盂排空后开始灌注，压力与容积呈现指数关系。所有单位的灌注均符合方程y = a + bx + cx²。排空均呈现顺时针滞后现象，尽管三分之一的灌注显示有主动收缩力，排空曲线呈倒S形。相同大小猪的正常多肾盂肾盂在个体之间以及两次研究之间均显示出广泛的压力-容积关系范围。这种广泛的范围在梗阻性扩张的发展中可能具有重要意义。
