Anderson C B, Abernathy R A, Hill G J
Surg Gynecol Obstet. 1977 Jun;144(6):873-5.
Acute ureteral obstruction was studied in dogs by intravenous pyelography at two, four, six, nine, 12, 24, 48 and 168 hours after total occlusion of the ureter. Ureteral obstruction was correctly diagnosed in all instances, if intravenous pyelography was performed within nine hours from the time of obstruction and if a two hour sequence roentgenogram was obtained. A variably diagnostic rate of 36 to 75 per cent occurred when intravenous pyelography was delayed until 12 hours or later. In ureters with a positive diagnosis, 65 per cent were correctly identified on the 15 minute film, 98 per cent on the one hour film and 100 per cent on the two hour film. Intravenous pyelography should be performed immediately after the onset of renal insufficiency to obtain maximal information, as deterioration in renal function from total ureteral obstruction rapidly causes inadequate excretion and concentration of contrast material and prevents visualization of an obstructed collecting system.
通过静脉肾盂造影术，在狗输尿管完全梗阻后的2小时、4小时、6小时、9小时、12小时、24小时、48小时和168小时对急性输尿管梗阻进行了研究。如果在梗阻发生后9小时内进行静脉肾盂造影术并获得两小时序列的X线片，则在所有情况下均能正确诊断输尿管梗阻。当静脉肾盂造影术延迟至12小时或更晚时，诊断率在36%至75%之间变化。在诊断为阳性的输尿管中，15分钟的片子上65%能正确识别，1小时的片子上98%能正确识别，2小时的片子上100%能正确识别。应在肾功能不全开始后立即进行静脉肾盂造影术，以获取最大信息量，因为完全输尿管梗阻导致的肾功能恶化会迅速导致造影剂排泄和浓缩不足，并妨碍对梗阻的集合系统进行显影。
