[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"urinary-stone\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:urinary-stone":24},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,4,0,[8,44,69,93],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":4,"enrollmentInfo":18,"targetDuration":4,"studyType":21,"phases":4,"briefSummary":22,"conditions":23,"keywords":25,"overallStatus":31,"whyStopped":4,"lastUpdateSubmitDate":32,"lastUpdatePostDateStruct":33,"startDateStruct":36,"completionDateStruct":38,"leadSponsor":40,"locationsCount":43},"100649543","2d4d-digit-ratio-and-urinary-stone-disease-100649543",false,"NCT07736924","2D:4D Digit Ratio and Urinary Stone Disease","Association Between 2D:4D Digit Ratio and Urinary Stone Disease: A Prospective Observational Case-Control Study","Inclusion Criteria:\n\n* Age 18 years or older\n* Provision of written informed consent\n* Undergoing non-contrast computed tomography at Malatya Training and Research Hospital during the study period\n* For cases: presence of at least one kidney and\u002For ureteral stone on non-contrast computed tomography\n* For controls: absence of stones in the kidneys, ureters, and bladder on non-contrast computed tomography\n* For controls: no previous physician-diagnosed urinary stone disease or history of stone-related surgery\n* Feasibility of bilateral second- and fourth-digit length measurements\n\nExclusion Criteria:\n\n* Congenital deformity of the hands or fingers\n* History of hand or finger trauma, fracture, surgery, or amputation that may affect digit length measurement\n* Severe hand deformity, contracture, or advanced joint disease preventing reliable measurement\n* Incomplete, inadequate, or technically unreliable 2D:4D measurements\n* Missing essential clinical, demographic, or imaging data\n* Pregnancy\n* Presence of bladder stones\n* Urinary diversion, major urinary tract reconstruction, or a significant structural urinary tract anomaly","ALL","18 Years",{"count":19,"type":20},300,"ESTIMATED","OBSERVATIONAL","This prospective observational case-control study will investigate whether the 2D:4D digit ratio is associated with urinary stone disease. Adults undergoing non-contrast computed tomography at Malatya Training and Research Hospital will be classified as cases if kidney and\u002For ureteral stones are detected and as controls if no urinary stones are detected and there is no previous history of stone disease or stone surgery. The lengths of the second and fourth fingers of both hands will be measured using a digital caliper by two independent observers who are blinded to the participant group. The study will also examine whether the 2D:4D ratio is associated with recurrent stone disease, stone burden, and bilateral or multiple stones.",[24],"Urinary Stone",[26,27,28,29,30],"2D:4D Digit Ratio","Urolithiasis","Kidney Stones","Urinary Stones","Prenatal Androgen Exposure","NOT_YET_RECRUITING","2026-07-26",{"date":34,"type":35},"2026-07-30","ACTUAL",{"date":37,"type":20},"2026-08-01",{"date":39,"type":20},"2027-01-31",{"name":41,"class":42},"Emrah Kızılay","OTHER",1,{"id":45,"slug":46,"hasResults":11,"nctId":47,"briefTitle":48,"officialTitle":49,"acronym":4,"eligibilityCriteria":50,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":51,"enrollmentInfo":52,"targetDuration":4,"studyType":54,"phases":55,"briefSummary":57,"conditions":58,"keywords":4,"overallStatus":59,"whyStopped":4,"lastUpdateSubmitDate":60,"lastUpdatePostDateStruct":61,"startDateStruct":63,"completionDateStruct":65,"leadSponsor":67,"locationsCount":43},"100522471","differences-in-postoperative-symptoms-with-four-ureteral-stents-100522471","NCT06083051","Differences in Postoperative Symptoms With Four Ureteral Stents","Randomized Clinical Trial Evaluating Differences in Postoperative Symptoms With 6Fr Percuflex Ureteral Stents Versus 6Fr Tria Ureteral Stents Versus 4.8Fr Percuflex Ureteral Stents Versus 4.8Fr Tria Ureteral Stents After Laser Lithotripsy of Renal and Ureteral Stones","Inclusion Criteria:\n\n* Patients with renal or ureteral urinary stones who require endoscopic treatment and stent placement in the outpatient operating room.\n\nExclusion Criteria:\n\n* Pregnant patients\n* Patients with transplant kidneys\n* Patients with irreversible coagulopathy\n* Patients with known ureteral stricture disease\n* Non-English speaking, vulnerable patients such as lacking of decision-making capability, prisoner, adult unable to consent, will not be enrolled.\n* Patients with planned staged procedures.\n* Patients who have stent placed before surgery.","89 Years",{"count":53,"type":20},272,"INTERVENTIONAL",[56],"NA","This is a prospective randomized controlled trial designed to assess the differences in postoperative symptoms related to placement of a 6Fr Percuflex ureteral stents, 6Fr Tria ureteral stents, 4.8Fr Percuflex ureteral stents, and 4.8Fr Tria ureteral stents after ureteroscopy with laser lithotripsy for treatment of upper tract urinary stones. 272 participants will be enrolled and will be on study for up to approximately 10 weeks.",[24],"RECRUITING","2026-06-04",{"date":62,"type":35},"2026-06-08",{"date":64,"type":35},"2024-03-21",{"date":66,"type":20},"2026-12",{"name":68,"class":42},"University of Wisconsin, Madison",{"id":70,"slug":71,"hasResults":11,"nctId":72,"briefTitle":73,"officialTitle":74,"acronym":4,"eligibilityCriteria":75,"healthyVolunteers":76,"sex":16,"minAge":17,"maxAge":4,"enrollmentInfo":77,"targetDuration":4,"studyType":54,"phases":79,"briefSummary":80,"conditions":81,"keywords":4,"overallStatus":59,"whyStopped":4,"lastUpdateSubmitDate":83,"lastUpdatePostDateStruct":84,"startDateStruct":86,"completionDateStruct":88,"leadSponsor":90,"locationsCount":92},"100423662","ultrasound-to-facilitate-stone-passage-100423662","NCT04796792","Ultrasound to Facilitate Stone Passage","Ultrasound Technology to Fragment and Reposition Urinary Stones","Inclusion Criteria:\n\n* Individuals presenting with at least one kidney stone\n* Stone with maximum dimension \\> 2 mm and ≤ 7 mm as determined by clinical imaging\n* Individuals with SCI - (Phase 2b only)\n\nExclusion Criteria:\n\n* Individuals under 18 years of age\n* Individuals who are pregnant or who are trying to get pregnant\n* Prisoners\n* with cognitive impairment that would limit their ability to comprehend their role in consent or participation.\n* Individuals who are unable to read or understand English\n* Individuals who are unable or unwilling to participate in follow up activities\n* Individuals who cannot be positioned for ultrasound imaging\n* Individuals with uncorrected bleeding disorders or coagulopathies\n* Individuals receiving anticoagulants and who are unable or not willing to temporarily cease the medication for the investigational procedure\n* Individuals with a calcified abdominal aortic aneurysm or calcified renal artery aneurysm ipsilateral to the renal stone targeted by the investigational procedure\n* Individuals with a solitary kidney\n* Individuals with an uncorrected urinary tract obstruction\n* Individuals with an untreated infection\n* Individuals with a comorbidity risk which, at the discretion of the physician, would make the patient a poor candidate for the investigational procedure\n* Individuals who have received two previous investigational procedures for the same stone target\n* Individuals who have undergone the investigational procedure within the last 21 days or still have unresolved AEs from a previous investigational procedure.",true,{"count":78,"type":20},140,[56],"This is a prospective, open-label, multi-center study to test the clinical feasibility of facilitating stone passage by the combination of breaking and repositioning stones with ultrasound, without the need for anesthesia.",[24,82],"Urinary Calculi","2025-12-02",{"date":85,"type":35},"2025-12-09",{"date":87,"type":35},"2023-04-01",{"date":89,"type":20},"2028-10-31",{"name":91,"class":42},"University of Washington",3,{"id":94,"slug":95,"hasResults":11,"nctId":96,"briefTitle":97,"officialTitle":98,"acronym":4,"eligibilityCriteria":99,"healthyVolunteers":11,"sex":16,"minAge":100,"maxAge":101,"enrollmentInfo":102,"targetDuration":4,"studyType":54,"phases":104,"briefSummary":105,"conditions":106,"keywords":107,"overallStatus":59,"whyStopped":4,"lastUpdateSubmitDate":110,"lastUpdatePostDateStruct":111,"startDateStruct":113,"completionDateStruct":115,"leadSponsor":117,"locationsCount":43},"100564406","two-types-of-single-use-flexible-ureteroscopies-for-the-treatment-of-upper-urinary-tract-stones-in-children-100564406","NCT06628765","Two Types of Single-use Flexible Ureteroscopies for the Treatment of Upper Urinary Tract Stones in Children","Two Types of Single-use Flexible Ureteroscopies for the Treatment of Upper Urinary Tract Stones in Children: A Single-center Randomized Controlled Trial","Inclusion Criteria:\n\n* Patients scheduled for ureteroscopy and laser lithotripsy for individual renal stones ranging in size from 5 mm to 20 mm in all intrarenal locations (If there are multiple stones present, the total stone burden in cross section should not exceed 20 mm)\n* Patients \\\u003C 14 years\n* For children younger than 8 years old, the informed consent form is signed by the parents; for children older than 8 years old, the informed consent form is signed by both the parents and the child themselves.\n\nExclusion Criteria:\n\n* Children with uncontrolled urinary tract infections or coagulation disorders and other contraindications for surgery before the operation.\n* Children with severe renal insufficiency, anatomical or functional solitary kidney, known nephrocalcinosis, and other significant comorbidities that are not suitable for participating in the study.\n* Children who refuse to participate in this study.\n* Any other reason that in the opinion of the investigator would make the participant unsuitable for enrollment in the study.","0 Years","14 Years",{"count":103,"type":20},52,[56],"The single-use digital flexible Ureteroscopy (fURS) is commonly used for the treatment of upper urinary tract stones. The size of the outer diameter of the fURS can affect the safety, efficacy, and medical costs of the treatment. Particularly for children, their ureters are thinner and more tortuous compared to adults, which places higher demands on medical devices. The investigators are interested in determining if the performance of the two different sizes of fURS (6.3 Fr vs. 8.6 Fr) are equivalent. This study will have guiding significance for the selection of upper urinary tract stones surgery in children in the future.",[24],[24,108,109],"Flexible Ureteroscopy","Children","2024-11-11",{"date":112,"type":35},"2024-11-12",{"date":114,"type":35},"2024-10-08",{"date":116,"type":20},"2025-04-08",{"name":118,"class":42},"The Children's Hospital of Zhejiang University School of Medicine"]