Active clinical trials for "Calculi"

To predict the outcome of flexible ureteroscopy in the management of renal stones based on preoperative scoring module using five preoperative parameters that have effect on stone free status postoperatively.

to assess safety, efficacy of Flexible ureteroscopy (FURS) holmium:YAG laser lithotripsy (LL) compared to extracorporeal shockwave lithotripsy (ESWL) in management of lower calyceal stones (LC) stones.

Early laparoscopic cholecystectomy is the current standard therapy for acute cholecystitis, but temporary decompression of the gallbladder (GB) through percutaneous or endoscopic route can be required to alleviate inflammatory process and reach an appropriate time for elective surgery in patients with high operative risk or marked local inflammation or organ dysfunction. Also preoperative endoscopic retrograde cholangiopancreatography (ERCP) is often needed because common bile duct (CBD) stone is accompanied in patients with acute cholecystitis at reported rate from 7-20%. Two-steps approach of percutaneous transhepatic GB drainage (PTGBD) followed by ERCP or vice versa has been performed for the treatment of acute cholecystitis with concomitant CBD stone who are not suitable for urgent cholecystectomy. However single-step drainage of CBD and GB through ERCP and endoscopic transpapillary GB drainage (ETGD) using nasocystic tube or plastic stent has alternatively been attempted in patients who have contraindications for PTGBD. In clinical practice, many endoscopists have hesitated to perform ETGD because of its relatively low technical success rate and specific concern about post-ERCP adverse event but it minimizes catheter keeping duration, and provides effective clinical improvement via physiologic route. Currently there are scarce data on if ETGD using nasocystic tube or plastic stent are comparable in terms of clinical efficacy and safety.

Ultraslow full-power SWL versus slow power-ramping SWL in stones with high attenuation value

A double blind randomized controlled trial designed to compare pain control and safety with ketorolac and oxycodone in the post-operative setting for patients undergoing ureteroscopy for treatment of urinary stones. Patients are followed for five days after their surgery as they record their pain scores, medication utilization, and stent related symptoms.

Due to the anatomic characteristics of the lower calyx, lower pole stones are difficult to be eliminated through the ureter, even if the stones had been fragmented. Retrograde intrarenal surgery (RIRS) can be used to deal with lower pole stones of 1.0-2.0 cm, while percutaneous nephrolithotripsy (PCNL) is mainly used to deal with lower pole stones with larger diameter or when RIRS failed to resolve the stone. This study was conducted to compare mini PCNL and retrograde intrarenal surgery (RIRS) for the management of lower pole kidney stones in terms of efficacy.

Providing safe and efficient anesthesia and in a field hospital is a challenging situation. This study investigated the feasibility and safety of thoracic spinal anesthesia for small-incision open cholecystectomy in a deployed field hospital.

Extracorporeal shock wave lithotripsy (ESWL) of pancreatic stones has been described as an effective approach for stone drainage and pain relief, and general or epidural anesthesia has been reported for such procedure. Single infusion of remifentanil has been described in ESWL of urinary stones, but it has never been described in ESWL of pancreatic stones. Moreover, single infusion of remifentanil might induce several complications, such as postoperative nausea and vomiting. The investigators attended to investigated whether combination of flurbiprofen with remifentanil reduced remifentanil dose and attenuated the complications.

A prospective, single-center, single-arm, trial to demonstrate safety and device performance of the ADVA-Tec Uriprene™ Degradable Temporary Ureteral Stent. This is a first-in-man clinical study in a small human population.

The purpose of this study is to determine the efficacy of febuxostat, once daily (QD), compared to allopurinol or placebo in patients with excessive amounts of uric acid in their urine and who have recently had kidney stones.