Mortensen J, Frøkiaer J, Tofft H P, Djurhuus J C
Scand J Urol Nephrol. 1984;18(4):329-33. doi: 10.3109/00365598409180204.
The relationship between pressure and flow of the multicalyceal renal pelvis of the pig was investigated in 10 units. The relationship was studied in the intact system and after three consecutive transsections of the ureter 3 cm proximal to the ureterovesical junction, at the lower pole of the kidney and as proximal on the renal pelvis as possible. The mean resting renal pelvic pressure changed from 7.3 to 8.8 cm H2O when a distal transsection was performed. The resting pressure after proximal transsection and pelvic transsection was 8.0 and 6.5 cm H2O respectively. During perfusion the intact system as well as the distal transsection showed a three-phased relationship. In the latter the phases showed a shift to the right and the renal pelvic pressure was significantly decreased at flow rates from 4-10 ml/ureter/min. Perfusion after proximal transsection and pelvic transsection caused only minor increases in the renal pelvic pressure approximating a linear relationship. The study confirms a three-phased relationship between pressure and flow in renal pelvis and a resistance to high flow rates depending on the length of the ureter.
在10个单位中研究了猪多肾盂肾盂的压力与流量之间的关系。在完整系统以及在输尿管膀胱连接处近端3厘米处、肾下极以及尽可能靠近肾盂近端连续三次横断输尿管后研究了这种关系。进行远端横断时，平均静息肾盂压力从7.3厘米水柱变为8.8厘米水柱。近端横断和肾盂横断后的静息压力分别为8.0厘米水柱和6.5厘米水柱。在灌注过程中，完整系统以及远端横断均显示出三相关系。在后者中，各相向右移动，并且在4-10毫升/输尿管/分钟的流速下肾盂压力显著降低。近端横断和肾盂横断后的灌注仅导致肾盂压力轻微升高，近似线性关系。该研究证实了肾盂压力与流量之间的三相关系以及取决于输尿管长度的对高流速的阻力。
