View clinical trials related to Urolithiasis.
Filter by:Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease, ranging from pure steatosis to non-alcoholic steatohepatitis and ultimately to liver cirrhosis. In order to study the association between NAFLD and nephrolithiasis while minimizing the confounding effect of metabolic syndrome, we investigated the impact of different degrees of NAFLD severity on potential risk factors for stone formation.
Many things, like not drinking enough fluids, contribute to making kidney stones and there is also a genetic tendency. We looked into this in 1998-2000 in 14 families with several stone-formers. In four of these the risk for stones was passed down through one line of the family. We have now had a close look at the DNA of 47 members of these four families using a very sensitive technique called exome sequencing. We wanted to see if these individuals had inherited any rare changes (variations) in their DNA which would add to their risk of making stones. We found 11 variations which might be important. Surprisingly, these were not in genes which have been regarded as the main causes of stones. Most of them are unfamiliar to clinicians and scientists world-wide. Experts on the genes gave us helpful advice about the likely significance of the variations. Researchers in Paris, Lille and the UK (Oxford, Cambridge and Sheffield) did analyses to help to decide this. An exciting finding was that one of the variants, not previously identified in stone formers, had just been found in a large Italian family with stones. This small study has shown that: variations in a wide range of genes may contribute to stone formation; these occur in genes that we have not come across before; further laboratory studies are essential to investigate potentially important variants; sharing findings between laboratories doing similar studies world-wide is crucial.
To evaluate the efficacy and safety of electroconductive (EC) and electrohydraulic (EH) extracorporeal shock wave lithotripsy (ESWL) for the treatment of ureter and kidney stones, this study conducted a randomized controlled trial.
Selective alpha-blockers have been used for the treatment of ureteric stones as medical expulsive therapy (MET). Recently they have been successfully used in passive ureteric dilatation before semirigid ureteroscopy. This study enables us to know the role of silodosin in ureteric dilatation to facilitate ureteral access sheath placement in Retrograde Intrarenal Surgery with flexible ureteroscopy.
The goal of this observational study is to analyse the occurence of urinary calculi after bladder augmentation in children: - location of the calculi (kidney or bladder) - type of bladder augmentation with higher rate of urinary calculi and why - Find risk factors of urinary calculi in bladder augmentation (age, sex, other bladder procedures..)
This study was designed to investigate the effect of position and predictive factors on hypotension in patients performing percutaneous nephrolithotomy. Patients aged >18 years and ASA I-III who underwent general or regional anaesthesia were included in the study. Percutaneous access was performed in all patients with fluoroscopy in the prone position.
Retrograde intrarenal surgery (RIRC) is used as standard treatment for stones less than 2 cm. In some cases, the ureteral access sheath cannot be placed due to ureteral stricture. In this case, a double j stent (DJ) is placed to passively dilate the ureter, and the RIRC is postponed for post-dilatation. The aim of the study is to determine the optimal time for RIRC operation in cases where a double j stent was placed for passive dilatation.
To determine the optimal time between the first and second operations in patients with bilateral kidney stones and scheduled percutaneous nephrolithotomy for the contralateral kidney. Patients who underwent percutaneous nephrolithotomy to the contralateral kidney 2-4 weeks and 4-6 weeks after the first operation will be compared.
Guidelines for endourological procedures during COVID-19 have suggested deferring all elective procedures, while obstructed/ infected stones should undergo urgent decompression. At our centre, screening protocols were implemented with prioritization strategies so that elective care could safely continue at deescalated rates. COVID or septic patients underwent emergency decompression, while non-COVID and non-septic patients underwent primary ureteroscopy (URS) or retrograde intrarenal surgery (RIRS). We aim to report our experience with endourological surgery for stone disease during COVID-19.
To evaluate the efficacy and stone free rate of placebo versus tamsulosin as medical expulsive therapy post-SWL in patients with renal stone less than 20 mm