Abstract
The currently used techniques for nephrostomy sometimes fail to advance the drainage catheter through the nephrostomy track into the renal pelvis. to solve this problem a new technique has been developed. the improvement with this technique is the dilatation of the track with polypropylene dilators and a splitaway sheath. the split-away sheath is threaded on the largest dilator. When the dilator is removed the drainage catheter is coaxially passed through the split-away sheath into the renal pelvis. the sheath is then removed. the technique has been used successfully in 32 patients without complications
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