View clinical trials related to Calculi.
Filter by:The aim of this study was to evaluate the role of flexible cystoscopy in preventing malpositioning of the ureteral stent after laparoscopic ureterolithotomy in male patients. From April 2009 to June 2015, 97 male patients with stones >1.8 cm in the upper ureter underwent intracorporeal double-J stenting of the ureter after laparoscopic ureterolithotomy performed by four different surgeons. In the last 50 patients who underwent laparoscopic ureterolithotomy flexible cystoscopy was performed through the urethral route to confirm the position of the double-J stent, while in the first 47 correct positioning of the stent was confirmed through postoperative KUB.
The main aim of the study is to investigate and compare the possible acute effect of standard PCNL, mini-PCNL and RIRS on renal function. Secondary aims are to investigate the efficacy (stone-free rate), safety (complication rate, long-term kidney function) and other parameters (operation, fluoroscopy and hospitalization time) concerning the 3 endourological operations (PCNL, mini- PCNL, RIRS) for the treatment of renal calculi.
Up-to-date, urology guidelines introduce safety guidewire (SGW) as an integral tool in ureteroscopy and recommended its routine use. However, the necessity of SGW placement in endourological procedures lack evidence and is being suggested as an expert opinion. Present study aimed to evaluate the use of SGW placement and its necessity in treatment of ureteral stones with semi-rigid ureteroscopy (s-URS). For this purpose patients with ureteral stones are being stratified according to ureteral stone location and prospectively randomized into two groups' according to SGW usage or not in s-URS. Ureteroscopy and litotripsy is being done with a semi-rigid ureteroscope of 6.4/7.8 Fr (Olympus) and laser. Chi-square and student t-test were used for comparing data.
This study centers on the treatment of low pole renal stones by flexible ureteroscope and intends to find the key anatomical parameters using a prospective, randomized multi-center trial design and to make a more appropriate standard for flexible ureteroscopy of low pole renal stones.
In patients undergoing RIRS for kidney stone, we aim to show the effect of single lung ventilation with a double lumen tube on operative (operation scope duration, perforation, hemorrhage, etc. complications) and postoperative parameters (stone-free rates, complications like postoperative hemorrhage and fever, hospital stay, etc.) and to show changes in renal stone position during simultaneous normal ventilation and single lung ventilation.
Percutaneous nephrostolithotomy (PCNL) is a common endoscopic procedure performed for upper urinary tract calculus disease. Despite being minimally invasive, it is associated with significant postoperative pain, often necessitating inpatient hospitalization and narcotic pain medications. Additionally, one of a number of catheters is often left protruding from the access tract for a period of time following the procedure, adding to patient discomfort. Attempts have been made to study peri-tubular or access tract analgesic installation, which have shown promise.1-2 However, no studies, to our knowledge, have examined the use of liposomal bupivacaine preparations in this regard. In this study we hope to prospectively analyze the use of liposomal bupivacaine injected to the access tract site at the time of PCNL and determine its effects on postoperative narcotic requirement and pain scores. Patients presenting for PCNL will be randomized to either the liposomal bupivacaine or usual care, which involves no injection of local anesthesia. Patients will then be followed during their inpatient stay. Total narcotic requirement (in milligrams) and pain scores (using Wong-Baker FACES rating scale) will be compared.3 Typical postoperative care and discharge criteria will not change during the course of this study.
Reusable flexible ureteroscopes are widely used to treat various upper urinary tract diseases including urinary stones. However, they require a long turnover time between procedures because of the sterilization process. Moreover, repeated use of a scope ultimately deteriorates its image quality which leads to a high maintenance cost in the long-term. A disposable digital flexible ureteroscope was released in the United States in January 2016, offering an improved image resolution, new scope performance characteristics with every case, and no need for sterilization and repair. Preliminary data from our center has demonstrated that disposable scopes shorten operative time by 25% compared to reusable fiberoptic scope and are associated with a 2/3 reduction in procedural complication rate. Therefore, treatment with disposable scopes may be more effective for patients and facilitate cost management within the hospital. Here, we propose a three-armed, prospective randomized study, comparing treatment outcomes between disposable digital, reusable fiberoptic, and reusable digital flexible ureteroscopes.
This prospective, randomized study is aimed to assess the efficacy and safety of paravertebral block compared to epidural anesthesia for percutaneous nephrolithotomy. The investigators suppose that paravertebral block is not inferior in controlling the perioperative pain for percutaneous nephrolithotomy compared to epidural block.
This is an observational study based on retrospectively collected data of ureter stone patients between 2011 and 2014. Aim of study is to determine radiologic findings of non-contrast abdominal computerized tomography as predicting clinical outcomes of suspect ureter stone patients in emergency department (ED).
This study aim to evaluated the effectiveness of Digital SpyGlass Cholangioscopy to facilitate common bile duct stone removal without fluoroscopy