Active clinical trials for "Urinary Calculi"

An Emergency Department Targeted Ultrasound (EDTU) is an ultrasound examination performed by an emergency department physician, instead of a radiologist or ultrasound technician. EDTU is intended to be a readily assessable test performed at the bedside, to quickly and safely determine the presence of a disease state; it answers a binary question, as compared to formal ultrasound imaging which seeks to determine the cause of a patient's symptoms. The objective of this study is to determine the accuracy of EDTU in patients suspected of renal colic. By demonstrating excellent test characteristics, these investigators hope that this research will be used to incorporate EDTU for hydronephrosis into standard emergency care in Canada.

The purpose of this study is to evaluate the feasibility of the Cook Ureteral Stent to reduce post-stent placement pain and urinary symptoms in patients following ureteroscopy for urolithiasis.

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: 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?" 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 study was to explore the effects of uric acid control on stone recurrence and renal function in patients with calculi of hyperuricemia through a prospective controlled study.

The evaluation of 24 hour urinary oxalate excretion is the gold standard for diagnosing Hyperoxaluria in patients with recurrent urolithiasis. The relationship of oxalate measurement between spot and 24 hour urine sample has not been studied in Pakistani population before. Thus, it is necessary to see if spot urine samples show good correlation with 24 hour urine samples in our population where the frequency of hyperoxaluria in patients with urolithiasis is reported to be 64.5%. Also, the various pre analytical issues associated with 24 hour urinary collection which may lead to the incorrect or misdiagnosis, need for duplicate testing consuming extra resources and man power. We therefore, in this study, want to see the correlation between 24 hour urinary oxalate and oxalate to creatinine ratio. The aim of our study is to determine the relationship between 24 hour urinary oxalate and spot urine oxalate to creatinine ratio and to identify if oxalate to creatinine ratio can be used as an alternative to 24 hour urinary oxalate

The aim of this study is to evaluate if music listening relieves pain and discomfort during Extracorporeal Shock-Waves Lithotripsy (ESWL).

The aim of this study is to estimate the role of Parents' Health-Education Handbook in preventing pediatric urolithiasis. This study is designed as an unmatched clusters randomized intervention trial. A total of 171 villages and communities in Shufu Count in Kashgar Region of China are assigned to intervention group or control group by a simple random sampling technique with a rate of 1:1. Newborns and their parents are assigned to intervention group or control group as their villages or communities. And at least 2314 newborns are needed in this study. Participants include newborns and their parents. The baseline of newborns includes demographic data, blood cell analysis, urinary tract ultrasonographic examination. Newborns' parents will be asked to answer a questionnaire which regarding the knowledge, attitudes, and practices (KAP questionnaire, estimated by scores) related to pediatric stone. Parents in intervention group will undergo and active health education by the investigator with " Parents' Health-Education Handbook", while parents in control group are without the program. Newborns are invited to undergo blood cell analysis, urine analysis and urinary tract ultrasonographic examination separately when they are one, two and three years old. Their parents will be asked to answer the same KAP questionnaire at the same time. The incidence of urolithiasis is evaluated and compared between the two groups. Improvement of knowledge, attitudes, and practices (KAP questionnaire) related to pediatric stone of parents are evaluated. Association between urolithiasis incidence and improvement of scores in KAP questionnaire are evaluated.

Despite the advent of treating stones with Extracorporeal Shock Wave Lithotripsy (ESWL) and Percutaneous nephrolithotomy (PCNL), the recurrence rate for renal stones remains high and this may be due to poor compliance of patients with dietary and fluid advice, age, metabolic abnormalities, medicines and the formation of "new stones" from clinically insignificant residual fragments (CIRF). Though some patients become stone-free after ESWL/PCNL or open surgeries, the majority develop "new stones" and it is difficult to predict when these stones will recur until either they have imaging perform or they developed symptoms. However, the use of regular imaging for monitoring will be costly and involve radiation exposure. Therefore, a diagnostic tool is needed to enable the clinician and/or patient to monitor for stone recurrence. In the previous studies, some urine markers were identified that are related to stone formation. The relationship of these urine markers with the recurrence of renal stone will be further explore in this study. Also, potential markers that could predict stone recurrence will be identified, and hence earlier intervention could be offered to patients.

The purpose of this study is to study the outcome of patients after ureteroscopy in which all fragments remaining after holmium laser lithotripsy were retrieved compared to those where small, insignificant fragments were left for spontaneous passage.

Patients suffering from acute renal colic are evaluated by non contrast computerized tomography with excellent identification rates of urinary stones. The scan also covers the bones of the ribs, spine and pelvis, allowing measurements of the bone density and identifying early osteopenic changes. Bone demineralization is associated with metabolic changes such as hypercalcemia or hypercalcuria. In this study the investigators will look for correlation between kidney stones, osteopenic bone changes and metabolic abnormalities.