View clinical trials related to Kidney Stones.
Filter by:Percutaneous nephrolithotomy (PCNL) is a surgical procedure that is standard of care for the removal of large kidney stones. PCNL involves removal of the stone(s) from the kidney through a temporary tract that is percutaneously placed through the patient's back during surgery. There is a significant risk of urinary tract infection after PCNL but wide clinical variation in use of prophylactic antibiotics in the days leading up to surgery. For patients who had already agreed to undergo PCNL, we plan to randomize them either to 1 week of preoperative antibiotic prophylaxis plus < 24 hours of perioperative IV antibiotics or to < 24 hours of perioperative IV antibiotics only. We will then compare the rates of infectious complications following PCNL for the two groups.
The aim of this research is to determine an effective antibiotic regimen following definitive surgical therapy of kidney stones caused by bacterial infection (struvite stones).
The purpose of this study is to compare the postoperative systemic inflammatory response syndrome (SIRS) rates undergoing retrograde intrarenal surgery (RIRS) after multiple-, single-, zero-dose of ceftriaxone prophylaxis in a prospective randomized trail. The investigators will enroll 450 patients who are candidates for RIRS in the investigators study. By simple random sampling technique, patients will be assigned to three groups (multiple-, single-, zero-dose of ceftriaxone prophylaxis,respectively). In addition to the difference of usage of ciprofloxacin prophylaxis, the rest of the procedure is the same in all three groups.The end point of the study is the comparison of outcome of procedure including SIRS rate, stone free rate (SFR), operation time, length of stay,and hematuresis.
This is a prospective randomized trial to study the effect of assigning the control of the fluoroscopic x-ray activation to the surgeon as compared to the radiation technologist. Radiation exposure will be assessed from the collected data, fluoroscopy time, and dose parameters (cumulative absorbed dose and dose area product). From exposure data, entrance skin dose (ESD) and midline absorbed dose (MLD) will be calculated. The primary outcome in this study will be total fluoroscopy time for the procedure. A secondary outcome will be the ESD. The investigators will further analyze the contribution of clinical predictors (e.g. stone size/location) and procedural predictors on fluoroscopy times and ESD. It is hypothesized that a 30% reduction in fluoroscopy time will occur when the operating surgeon is controlling the activation of the x-ray beam.
The purpose of this study is to determine whether new software processing of ultrasound images can improve detection and size determination of kidney stones.
The overall purpose of this study is to evaluate criterion-related validity of a newly-developed disease-specific instrument to assess the health-related quality of life (HRQOL) of patients who have had kidney stones. Specific aims of this study are: 1. Aim 1. Evaluate the population/external validity (generalizability) of the Wisconsin Stone-QOL by answering the question, "Is the Wisconsin Stone-QOL useful for assessing the HRQOL of patients who form kidney stones from a broad region of North America?" 2. Aim 2. Assess the ability of the Wisconsin Stone-QOL to detect changes within patients related to stone interventions and other disease-specific outcomes by answering the question, "Is the Wisconsin Stone-QOL sensitive to changes in stone-related outcomes within individuals?"
The purpose of this clinical study is to evaluate BackStop, a polymer-based device that is intended to be used during ureteroscopic lithotripsy to prevent retrograde stone migration.
This study tests moving kidney stones using focused ultrasound (referred to as ultrasonic propulsion). The study includes multiple population groups to investigate the ability of our technology to: a) move stone fragments to a location within the kidney to improve their chances of passage, and thus reduce the occurrence of additional symptomatic events and retreatment or b) move a symptomatic stone to relieve symptoms and pain.
This study will be conducted to compare the results of Laser and ultrasonic lithotripsy in disintegration of staghorn stones during percutaneous nephrolithotomy.
This is the third phase (feasibility and impact) of a three-phase project designed to derive, validate and test the feasibility and impact of implementing clinical decision support to safely limit the use of Computerized Tomography (CT) and its accompanying radiation and cost in emergency department patients with suspected renal colic. Hypothesis: Using a before and after model, integration of a clinical prediction rule into decisions about imaging in patients with suspected renal colic will result in a reduction of between 25-50% of radiation received from CT scanning in this population, without adverse affects on patient-centered outcomes.