View clinical trials related to Kidney Calculi.
Filter by:This is a randomized, placebo-controlled, double-blinded study examining the use of perioperative pregabalin in ureteroscopy with stent placement. Ureteroscopy is typically performed for kidney or ureteral stones, but may be performed for other reasons such as for the diagnosis and possible treatment of certain kinds of cancers. As part of the same surgery, a ureteral stent is often placed. The surgery and the stent can cause discomfort, and patients may receive narcotic pain medicine. In other surgeries, a single dose of pregabalin, around one hour before surgery has been shown to decrease the need for pain medication after the surgery. This work will test whether this is true in ureteroscopy by giving eligible patients who agree to participate either pregabalin or a placebo shortly before surgery then examining how much pain medication they use after surgery. A placebo is an inactive medication. Neither the study participant nor the study staff will know who received pregabalin and who received placebo until after the study is over. For completing surveys, patients will receive compensation for their time in the form of gift certificates.
Randomized treatment trial of baking soda or LithoLyte to determine if baking soda and Litholyte are effective in raising 24 hour urine citrate and pH.
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.
The purpose of this study is to assess whether certain beverages can increase urinary citrate levels in healthy individuals with no history of kidney disease.
- The primary aim is to study the natural history of single-calyx asymptomatic nonobstructing stone disease. - The Secondary aim is to determine the predictors of the need for intervention and of cure in such population.
A comparison on the outcomes of patients undergoing shockwave lithotripsy using the Storz machine versus the Dornier machine.
Randomized comparison of patient outcomes following standard PCNL versus mini-PCNL.
This study will test whether oxalate stimulates urinary crystals and impacts the immune system in healthy subjects using two controlled diets (low and high oxalate).
Patients undergoing retrograde intrarenal surgery for kidney stones from November 2017 to May 2018 were prospectively recruited to participate in the study. In each case after the beginning of general anesthesia with mechanical ventilation surgeons were asked to assess the mobility of the operative field and conditions for laser lithotripsy according to the developed questionnaire scale. The questionnaire consisted of 5 degrees of assessment of kidney mobility and each question was scored from 1 to 5, 1 being very mobile (extremely poor conditions for dusting) and 5 completely immobile (Ideal conditions for dusting). After this assessment modified technique of general anesthesia was applied called combined respiratory support which consisted of reduction of tidal volume to 250-300 ml and respiratory rate to 4-5 per minute with transcatheter high frequency jet ventilation through endotracheal tube with a respiratory cycle frequency of 300 per minute and maintained during retrograde intrarenal surgery. At the beginning of combined respiratory approach, surgeons were once again asked to assess the mobility of the operative field and the conditions for laser lithotripsy. Main ventilation parameters were recorded and compared in both regimens.
To determine if the effects of MOSES laser modulation technology can improve the safety and efficiency to laser fragmentation resulting in decreased total laser time, reduced potential for injury to the patient, and total OR time and utilization.