Nephrolithiasis, calcium oxalate

This study is tracking 238 adults who are already scheduled to have a procedure for kidney stones or an enlarged prostate (BPH) using Boston Scientific devices. The main goal is to see how often serious side effects happen with these tools in real-world use. Researchers will also…

This study tests whether giving people a live gut bacterium called Oxalobacter formigenes can lower the amount of oxalate in their urine. High urinary oxalate is a major risk factor for calcium oxalate kidney stones. Forty adults with a history of such stones who lack this bacter…

This study is testing whether a simple, standard prevention plan works as well as a personalized one for people who get calcium oxalate kidney stones. 80 participants will either receive a diuretic and diet advice based on their stone type alone, or have their treatment guided by…

This study tests whether empagliflozin, a drug used for diabetes and heart conditions, can help prevent calcium-based kidney stones. Researchers will give the drug daily for 4 weeks to 32 adults who have had calcium oxalate or calcium phosphate stones. They will measure changes i…

This study compares two types of ultrasound-guided nerve blocks for pain control after open kidney removal surgery. Ninety adults will receive either a rhomboid intercostal sub-serratus plane block or an external oblique intercostal block. Researchers will measure how long it tak…

This study tests whether letting a bladder catheter fall out on its own (passive removal) is better than having a nurse pull it out (active removal) after urological surgery. 160 men will be randomly assigned to one method. Researchers will measure satisfaction, pain, and anxiety…

This study aims to find out if people who get calcium oxalate kidney stones produce more oxalate in their bodies than healthy people. Researchers will compare 80 adults—some with a history of stones and some without—after they eat a special low-oxalate diet and take small amounts…

This study aims to find out if people who get calcium oxalate kidney stones absorb more oxalate from food than healthy people. Researchers will compare stone formers and healthy volunteers by having them eat special diets and measuring oxalate in urine, blood, and stool. The goal…

This study aims to understand how oxalate, a substance found in many foods, contributes to kidney stone formation and affects the body's immune system. Researchers will enroll 88 healthy volunteers and people with calcium oxalate kidney stones. Participants will follow a controll…

This study is for older adults, including those in the hospital or with low priority care needs. Researchers want to see if newer methods, like body scans and blood tests, can better detect malnutrition and kidney problems than current standard tests. The goal is to make diagnosi…

This study tests a new method to help patients understand complex spine or prostate surgeries before they agree to them. Instead of just reading a form, patients watch multimedia content and answer questions to check their understanding. The goal is to see if this approach makes …

This study looks at how well three AI models—ChatGPT, Gemini, and Deepseek—can diagnose and suggest treatments for urology diseases. Researchers will use 800 past patient records from four hospitals to check the AI's accuracy and usefulness. The goal is to understand if AI can he…

This study looks at how two natural compounds in food, oxalate and citrate, interact in the body and affect kidney stone formation. Researchers will measure changes in urine levels of these compounds after participants consume potassium citrate. The study includes 24 adults, some…