Slaton J W, Kropp K A
Department of Urology, Medical College of Ohio, Toledo, USA.
J Urol. 1996 Jan;155(1):58-61.
The parameters responsible for proximal ureteral stent migration were quantitated.
We compared 16 patients seen between 1990 and 1993 with stent migration to 32 patients whose stents did not migrate.
The stent indwelling time and number of stents with a proximal curl of less than 180 degrees were similar between the groups. More patients with migration had stents that were shorter than the ideal length, with a distal curl of less than 180 degrees and a proximal curl in the upper calix versus the renal pelvis.
A shorter than ideal stent, inadequate distal curl and a proximal curl in the upper calix appear to be significant factors in the process of stent migration.
对导致输尿管近端支架移位的参数进行量化。
我们将1990年至1993年间出现支架移位的16例患者与32例支架未移位的患者进行了比较。
两组之间的支架留置时间以及近端卷曲小于180度的支架数量相似。更多发生移位的患者所使用的支架短于理想长度，远端卷曲小于180度，且相对于肾盂，上肾盏内的近端卷曲更多。
短于理想长度的支架、远端卷曲不足以及上肾盏内的近端卷曲似乎是支架移位过程中的重要因素。
