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Abstract

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Purpose : The ureteral stent is very effective for the drainage of urine and
maintenance of renal function in patients with ureteral strictures. Retrograde ureteral
stunting is a common procedure. However, there is a need for antegrade ureteral
stunting with percutaneous nephrostomy in cases of severe ureteral strictures. In these
cases, retrograde exchange of ureteral stent is very difficult. Hence, we tried an easier
and more efficient exchanging method available in these cases and also assessed its
clinical results.
Materials and Methods : We performed retrograde ureteral scent exchange In the
patients using the following procedure.
First, the distal tip of the previously Inserted ureteral stunt was pulled out 2cm
beyond the external meatus.
Second, a guide-wire was inserted into the scent through the hole upto the kidney
and then the stunt was completely removed.
Third, a cystoscopic sheath without obturator was introduced into the bladder passing
over the guide-wire.
Fourth, a new ureteral stent was introduced into the ureter over the guide-wire with
pusher.
Results : We experienced successful exchange of ureteral steno 95 times on 9 ureters
in 8 patients with severe ureteral strictures who had antegrade ureteral stenting
performed.
Conclusions : From these results, we conclude that this exchanging method is very
safe and erective.

Å°¿öµå

Severe ureteral stricture; Exchange; Ureteral stunt;

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