View clinical trials related to Calculi.
Filter by:We are studying the possibility of using dental calculus as a reservoir for the genes of an infectious agent that has infected the patient in previous months; as it is done to highlight climate change in ice samples.
The rationale for this study is to determine if there is a difference in complications among patients undergoing ureteroscopy for renal stones who receive a stent compared to not receiving a stent postoperatively.
This is a prospective, open-label, multi-center, single-arm (non-randomized) study to assess the safety and effectiveness of breaking stones in the upper urinary tract using the SonoMotion Break Wave technology. Up to 30 subjects will be included. The procedure will be performed in a hospital surgical environment as an outpatient (without being admitted) or in a non-surgical environment such as a clinic or office procedure room. The procedure will be performed under varying levels of anesthesia ranging from no anesthesia to general anesthesia (fully asleep). Stones will be limited to ≤ 10 mm for lower pole stones and ≤ 20 mm everywhere else. Safety will be measured by the self-reported occurrences of adverse events, unplanned emergency department or clinic visits, and the need for further intervention. Fragmentation will be measured by self-reported stone passage and a comparison of computed tomography (CT) images before and after the procedure.
Ultraslow full-power SWL versus slow power-ramping SWL in ureteric stones with high attenuation value
Ultraslow full-power SWL versus slow power-ramping SWL in Renal stones with high attenuation value
The purpose of this study is to determine whether the magnetic compressive anastomosis has a better outcomes than traditional manual anastomosis on bilioenteric anastomosis.
Background: Standard-PCNL was considered as the first choice for ≥2 cm renal stones. Miniaturized technique Mini-PCNL has also been implicated in the past two decades. Recently, Super-mini PCNL (SMP) was introduced to treated ≤2.5cm renal stone. The miniaturized techniques seemed to take a longer operating time and have risk of getting infectious complications. However, there is no high quality of evidence showing that which kind of PCNL is best or what kind of patients is suitable for standard-PCNL, mini-PCNL or SMP. Objective: To compare the efficacy and safety of Standard-PCNL (≥24Fr), Mini-PCNL (12-20Fr) and SMP(10-14Fr) for the treatment of ≥2 cm renal stones Study design: This study is a prospective, observational, international, multicenter registry cohort study Study population: All patients ≥14 years with ≥2 cm renal stone who are planned for Standard-PCNL, Mini-PCNL or SMP are eligible for this study.
Ultraslow full-power SWL versus slow power-ramping SWL in stones with high attenuation value
The investigator aims to perform a prospective and randomized controlled trial evaluating the safety and efficacy of External Physical Vibration Lithecbole(EPVL) in treating 4-10 mm ureteral stone.
The purpose of this study is to compare ureteroscopy with and without use of safety guide-wire in treatment of ureteral stone