Marshall V, Whitaker R H
J Urol. 1975 Aug;114(2):204-7. doi: 10.1016/s0022-5347(17)66986-6.
Before a ureteral operation is undertaken for dilated, non-refluxing ureters it is essential to determine whether obstruction is present, since an operation is unnecessary and can be hazardous if there is no obstruction or infection. Obstruction is most accurately diagnosed by perfusing the upper tract at a known flow rate and measuring the resulting pressure. This test was performed on 5 patients in whom there was doubt as to the presence of obstruction from the radiographic evidence. In 4 of the 5 patients low pressure was found, the obstruction was excluded and an operation was avoided. In the fifth patient the obstruction was confirmed and relieved. The pressure flow test is useful in the diagnosis or exclusion of obstruction in the upper urinary tract.
在对扩张的、无反流的输尿管进行手术之前，必须确定是否存在梗阻，因为如果没有梗阻或感染，手术是不必要的且可能有风险。通过以已知流速对上尿路进行灌注并测量由此产生的压力，能够最准确地诊断梗阻。对5例根据影像学证据怀疑存在梗阻的患者进行了此项检查。5例患者中有4例发现压力较低，排除了梗阻，避免了手术。在第5例患者中，梗阻得到证实并解除。压力-流量试验对上尿路梗阻的诊断或排除很有用。
