Objective To analyse the eCect of ureteric stenting on dence of steinstrasse depended on the size of the calculus, regardless of whether a J stent was present, the incidence of steinstrasse and its eCects on the subsequent management of steinstrasse. being 2.6% and 56% for a burden of 1.5-2.0 cm and 3.1-3.5 cm, respectively (P<0.001). There was no Patients and methods Four hundred adult patients with a unilateral stone burden (mean diameter 1.5-3.5 cm) diCerence in the presenting symptoms in the two groups. The steinstrasse was in the lower third of the were randomly allocated into two groups; in group 1, patients had a J stent inserted before extracorporeal ureter in eight of 12 patients in group 1 and in 16 of 26 (62%) in group 2. The steinstrasse resolved sponshock wave lithotripsy (ESWL) and group 2 did not. Before randomization, the patients had normal renal taneously in seven patients in group 1 and in 12 (46%) in group 2 (P<0.11). Similarly, J stenting had function and no evidence of ureteric obstruction on intravenous urography. All patients underwent ESWL, no eCect on the subsequent treatment modalities to resolve steinstrasse. with the shock waves delivered first to the most dependent part of the calculi. Patients who developed Conclusion The use of J stenting before lithotripsy significantly lowers the incidence of steinstrasse in steinstrasse were identified and the eCect of the size of the calculi and the presence of a J stent on the patients with a stone burden of 1.5-3.5 cm. The incidence of steinstrasse increases with the size of the incidence and level of the steinstrasse, on the time of diagnosis, the size of the major stone fragment, associcalculi, whether or not a J stent is present; J stenting has no apparent eCect on the mode of presentation or ated presenting symptoms and eCect on subsequent management were compared between the groups. the subsequent management of steinstrasse.
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