Mortensen J, Djurhuus J C, Laursen H, Bisballe S
Scand J Urol Nephrol. 1983;17(3):369-72. doi: 10.3109/00365598309182148.
The renal pelvis pressure flow relationship of 40 normal pig upper urinary tract was investigated. During standardized studies it was disclosed that the resting pressure has a normal distribution with wide 95% confidence limits (0.3-14.7 cmH2O). When perfusion was introduced, pelvic pressure increased, the normal distribution was lost, and the 95% confidence limits were broadened to more than 30 cmH2O. A normal distribution was regained at higher flow rates. The mean increment beyond 8 ml/minute was small, only 3.7 cmH2O from 8 ml/minute to 20 ml/minute. The wide variation found in pressure responses to high flow rates and the spread of pressures at higher flow rates imply major difficulties in distinguishing, between normal and abnormal pressure flow relationships in renal pelvis.
对40只正常猪的上尿路肾盂压力-流量关系进行了研究。在标准化研究过程中发现，静息压力呈正态分布，95%置信区间较宽（0.3 - 14.7 cmH₂O）。当进行灌注时，肾盂压力升高，正态分布消失，95%置信区间拓宽至超过30 cmH₂O。在较高流速时恢复正态分布。超过8 ml/分钟后的平均增加值较小，从8 ml/分钟到20 ml/分钟仅为3.7 cmH₂O。在高流速下压力反应的广泛变化以及较高流速下压力的分散表明，区分肾盂正常和异常压力-流量关系存在重大困难。
