Abstract
To prospectively analyze and compare the outcomes of using externalized ureteral catheter (EUC) vs Double-J ureteral stent (DJ) in tubeless minimally invasive percutaneous nephrolithotomy (MPCNL). A total of 109 patients underwent tubeless MPCNL in our institute and have been enrolled into this study. Fifty-six and 53 patients had EUC and DJ positioning at the conclusion of the procedure, respectively. The two approaches have been compared for operative time, intraoperative blood loss, postoperative visual analogue pain scale (VAS) score, analgesic requirement, stent-related symptoms, hospital stay, degree of vesicoureteral reflux (VUR) on the operative side, and complications according to the modified Clavien system. There were no statistically significant differences between the two groups regarding the mean operative times, mean VAS scores, analgesic requirements, mean hemoglobin drop, mean hospital stay, and overall complication rate. However, compared with DJ group, EUC group presented fewer postoperative stent-related symptoms and less occurrence of severe VUR (p < 0.05). Positioning EUC in tubeless MPCNL is a safe alternative to DJ in patients with renal or upper ureteral calculi. EUC provides several benefits: obviated the need of a second endoscopic procedure, reduced stent-related discomfort, and lowered the occurrence of severe VUR.
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