Active clinical trials for "Urolithiasis"

The present study aims to assess the effectiveness of theobromine, -product present in high proportion in the cacao-, to prevent the development of uric acid kidney stones.

The purpose of this study is to determine if CBD oil has any effect on decreasing postoperative pain control following ureteroscopy for urinary stone disease, and to determine if CBD oil has any effect in decreasing the amount of postoperative opioids (commonly used drug) used by patients after undergoing ureteroscopy for urinary stone disease.

Examine the effects of cola on risks of kidney stones

The role of teleradiology has far reaching implications for the health of remote and underserved populations. The ability to coordinate radiographic evaluation and diagnosis from a distance has the potential to raise the standard of patient care throughout the world. Perhaps the safest and most cost effective mode of teleradiology today is telesonography. The current project attempts to determine the extent that telesonography improves the standard of care within a rural government-run primary clinic within the Dominican Republic. The work reported herein is intended to compare the use of telesonography to the current standard of sonographic examination (referral to government hospital 60km from target clinic). The study was conducted by randomly assigning 100 patients with clinical indications for sonographic examination into experimental and control groups. Following a 60-day implementation period, the following research questions will be addressed: 1) To what extent does the use of asynchronous telesonography increase the percentage of definitive diagnoses based on the total number of scans (definitive diagnoses / total number of scans)? 2) To what extent does the use of asynchronous telesonography increase the continuity of care for patients? 3) To what extent does the elapsed time between scanning and final radiological interpretation decrease with the use of asynchronous telesonography? This study will also look at the history of telemedicine / telesonography and its dissemination into the mainstream practice of medicine, explore training protocols that may be used to assist others to establish new telesonography programs in a developing nations, and discuss both advances and persistent barriers to the implementation of telesonography programs. Hypothesis: The use of a store-and-forward telesonography system in this setting will increase the speed and number of final diagnoses per scan received by the target clinic and will increase the continuity of care by increasing the number and speed of follow-up appointments to the target clinic.

The prevalence of urolithiasis is around 10 % in the French population. It is thus a major public health issue. When the stone is not spontaneously removed, interventions such as extracorporeal lithotripsy or flexible ureteroscopy (F-URS) are performed. F-URS is usually preferred in renal stones > 7 mm in comparison with lithotripsy, with better results. Efficacy of ureteroscopy is based on the "stone-free rate" (SFR) at 3 months. A SFR index is assessed according to the existence of residual fragments and their size. SFR score 1 (fragment ≤ 1mm) has been poorly studied, and is supposed to occur in 60% of cases. These residual fragments account for the high frequency of recurrence, probably favored by crystals aggregation and growth of these fragments under supersaturated urines. Indeed, calcium stones risk factors are urine supersaturation and crystal growth inhibitors deficiency. Citrate is the major crystal growth inhibitor in human urine. A hypocitraturia is reported in half of the lithiasic population. Consequently, citrate salts appear as an interesting therapeutic option, in order to slow crystal growth but also to chelate calcium, and consequently to solubilize stones in situ. However, to date, there is no available controlled study after surgical intervention such as flexible ureteroscopy. The aim of the investigator's study is to evaluate the efficacy of a 3-month potassium and magnesium citrate treatment following ureteroscopy on the elimination of residual fragments (SFR score 1).

The purpose of this study is to compare the stone clearance rate treated with different drugs after ESWL in urinary calculus,These drugs are often used in urinary calculus,such as progesterone,tamsulosin,propantheline Bromide and nifedipine.In these study the investigators want to investigate different effect of these drugs use to treat urinary calculus after ESWL.

Retrograde intrarenal surgery (RIRS) has been considered as the first-line choice for the management of <20mm kidney stones. Insertion of a ureteral access sheath (UAS) before RIRS surgery is currently accepted as an effective method to improve the effectiveness of surgery, but can be accompanied by serious complications. In long-term clinical practice, the investigators has found that different Bladder Filling Degree was accompanied by different Resistance During UAS Insertion Procedure in RIRS, which leads to the difference in success rate of UAS insertion.The investigator aims to perform a prospective and randomized controlled trial comparing the success rate of UAS insertion procedure under different bladder filling degree,and discuss the relationship between insertion resistance and ureter injury.

The investigator aims to perform a prospective and randomized controlled trial comparing the safety and efficacy of active basket extraction of fragments and stone dusting during the RIRS.

The aim of the study is to compare the safety and efficacy of ESWL and visual cystolitholapaxy in management of calcular acute urine retention.

The aim of the study is to compare the impact intravenous sedation versus general anesthesia on the efficacy of stone fragmentation in extracorporeal shock wave lithotripsy treatment.