Time to Stone Clearance for Ureteral Stones Treated with Extracorporeal Shock Wave Lithotripsy

摘要: OBJECTIVE To evaluate the time to stone-free status after shock wave lithotripsy (SWL) for ureteral stones. METHODS Medical records of 387 patients with stones who have been treated were retrospectively reviewed. Exclusion criteria this analysis included nonopaque stones, prior ureteric surgery, multiple anomalous kidneys or ureters, hydroureteronephrosis, infravesical obstruction, nonfunctioning kidney, inadequate follow-up, and treatment calcium-channel blockers alpha blockers. Ninety 120 shocks per minute at suggested maximum energy safety applied. Patients revisited periodically was accepted as success. The data analyzed according stone localizations; size (5-10 mm [group 1], 11-15 2], ≥16 3]); number SWL sessions. RESULTS initial locations were: upper ureter in 23%, middle 17.9%, distal 59% patients. average diameter 10.1 (range, 5-23). sessions varied between 1 4 (mean, 1.3). Of 117 109 (93.1%) free 20 days first session SWL. mean achieve 4.6 days. Group had quickest clearance expected 2.2 [range, 1-3]). Groups 2 3 longer times 7.7 3-18) 12.2 11-37), respectively. CONCLUSIONS appears a quick effective modality However, high-burden (>16 mm) considerably long periods therefore appear be unsuitable treatment.