@article{Elbaset_Edwan_Abouelkheir_Ashour_Ramez_Abdelhamid_Osman_2021, title={Predictors for Retrograde Ureteral Stenting Failure as an Initial Drainage Method for Emergent Complicated Acute Calculus Obstructive Uropathy}, volume={2}, url={https://siuj.org/index.php/siuj/article/view/129}, DOI={10.48083/OZUL6913}, abstractNote={<p><strong>Objective</strong> To define predictors for initial retrograde ureteral stenting (RUS) failure with the need for the<br>percutaneous nephrostomy (PCN) insertion as a drainage method in patients with complicated acute calculus<br>obstructive uropathy.<br><strong>Methods</strong> We undertook a retrospective evaluation of patients who presented with complicated obstructive calculus<br>uropathy (acute renal failure or obstructive pyelonephritis) between January 2016 and January 2020. Patients in whom<br>there was failure to visualize ipsilateral ureteric orifice and those with extrinsic ureteral obstruction were excluded.<br>Patient demographics and radiological data including stone site, hydronephrosis grade, maximum transverse stone<br>diameter, periureteral density (PUD) and pericalcular ureteric thickness (P-CUT) at the maximum transverse stone<br>diameter were assessed using non-contrast computed tomography at the time of admission.<br><strong>Results</strong> The study included 256 patients who were managed initially by RUS trial. Of them, 48 (18.8 %) had RUS<br>failure. The presence of acute pyelonephritis, increased maximum transverse stone diameter ≥ 9.5 mm, P-CUT ≥<br>7.5 mm, and PUD at stone level ≥ 17.5 HU were risk factors associated with RUS failure (P = 0.007, 0.002, &lt; 0.001,<br>and &lt; 0.001, respectively).<br><strong>Conclusion</strong> Initial radiological stone and ureteric characteristics, in addition to the clinical diagnosis of obstructive<br>pyelonephritis, can be used to determine PCN insertion as the preferred option over RUS for urinary drainage.</p&gt;}, number={4}, journal={Société Internationale d’Urologie Journal}, author={Elbaset, M.A. and Edwan, Mohamed and Abouelkheir, Rasha T. and Ashour, Rawdy and Ramez, Mohamed and Abdelhamid, Abdalla and Osman, Yasser}, year={2021}, month={Jul.} }