[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100598523":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":24,"centralContacts":28,"locations":34,"responsibleParty":57,"collaborators":60,"id":64,"slug":65,"hasResults":66,"nctId":67,"briefTitle":68,"officialTitle":69,"acronym":24,"eligibilityCriteria":70,"healthyVolunteers":66,"sex":71,"minAge":72,"maxAge":24,"enrollmentInfo":73,"targetDuration":24,"studyType":76,"phases":77,"briefSummary":79,"conditions":80,"keywords":84,"overallStatus":37,"whyStopped":24,"lastUpdateSubmitDate":89,"lastUpdatePostDateStruct":90,"startDateStruct":93,"completionDateStruct":95,"leadSponsor":97,"locationsCount":98},{"fullName":5,"class":6},"Northwestern University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Ureteroscopy","ACTIVE_COMPARATOR","Patients randomized to this arm will have their stones treated using the method of Ureteroscopy in a standardized fashion. A second 0.035in sensor guidewire will then be advanced up to the renal pelvis with placement confirmed by fluoroscopy. Placement of a 12\u002F14Fr ClearPETRA ureteral access sheath will be attempted. If this is unsuccessful, a 11\u002F13Fr ClearPETRA ureteral access sheath will be advanced over the wire. If this is unsuccessful, a 5Fr open ended ureteral catheter will be placed and procedure will be converted to a miniPCNL. Lithotripsy will be performed with the MOSES 2.0 high power Holmium laser with settings of 0.3J and 120Hz or 2J and 20Hz depending on stone location and appearance. Stones will be extracted with the suction access sheath. A ureteral stent will be placed at the conclusion of the procedure.",[13],"Device: ClearPETRA suction access sheath",{"label":15,"type":10,"description":16,"interventionNames":17},"Mini-PCNL","Will be performed by first starting with supine flexible cystoscopy to cannulate the ureteral orifice with a 5Fr open ended ureteral catheter. The patient will then be repositioned prone with 1-2 bumps placed transversely across the chest. Contrast will be instilled into the ureteral catheter and renal access will be obtained fluoroscopically with the triangulation technique. Once access is obtained, the tract will be dilated to 20Fr and a 18\u002F20Fr ClearPETRA renal access sheath will be inserted to assess the collecting system. If there is concern that the 20Fr access is not sufficient to clear the stone, the tract will be upsized to 24 or 30Fr. The stones will be evacuated with the Trilogy Lithotripter and\u002For laser, suction and\u002For basket extraction. A ureteral stent will be placed at the conclusion of the procedure.",[13],[19,25],{"type":20,"name":21,"description":22,"armGroupLabels":23,"otherNames":24},"DEVICE","ClearPETRA suction access sheath","Ureteroscopy utilizing the ClearPETRA suction access sheath.",[9],null,{"type":20,"name":21,"description":26,"armGroupLabels":27,"otherNames":24},"Mini-PCNL utilizing the ClearPETRA suction access sheath",[15],[29],{"name":30,"role":31,"phone":32,"phoneExt":24,"email":33},"Alyssa McDonald, MPH","CONTACT","312-695-8146","alyssa.mcdonald@northwestern.edu",[35],{"facility":36,"status":37,"city":38,"state":39,"zip":40,"country":41,"countryCode":42,"cosmosGeoPoint":43,"geoPoint":48,"contacts":49},"Northwestern Memorial Hospital","RECRUITING","Chicago","Illinois","60611","United States","US",{"type":44,"coordinates":45},"Point",[46,47],-87.65005,41.85003,{"lat":47,"lon":46},[50,51,54],{"name":30,"role":31,"phone":32,"phoneExt":24,"email":24},{"name":52,"role":31,"phone":32,"phoneExt":24,"email":53},"Allaa Fadl-Alla, BA","allaafadlalla@northwestern.edu",{"name":55,"role":56,"phone":24,"phoneExt":24,"email":24},"Amy E Krambeck, MD","PRINCIPAL_INVESTIGATOR",{"type":56,"investigatorFullName":58,"investigatorTitle":59,"investigatorAffiliation":5,"oldNameTitle":24,"oldOrganization":24},"Amy Krambeck","Director of the Endourology\u002FStone Division",[61],{"name":62,"class":63},"KARL STORZ Endoscopy-America, Inc.","INDUSTRY","100598523","comparing-efficiency-and-stone-free-rates-mini-pcnl-vs-flex-urs-100598523",false,"NCT07072598","Comparing Efficiency and Stone-Free Rates Mini PCNL vs Flex URS","Comparing Efficiency and Stone-Free Rates After Mini-Percutaneous Nephrolithotomy and Flexible Ureteroscopy With Suction Access Sheaths","Inclusion Criteria:\n\n* Patients 18 years or older\n* Have a CT scan showing renal stones 1-3cm in length\n* Patients who will be able to read, understand, and complete patient questionnaires\n\nExclusion Criteria:\n\n* Pregnant individuals\n* Those with anomalous renal anatomy\n* Patients with a urinary diversion (ex: Ileal conduit, reservoir, bladder substitute, etc.)\n* Any condition rendering patient medically unfit to undergo either procedure (Bleeding diasthesis)\n* Patients who lack decisional capacity\n* Patients who are non-english speakers\\*\n\n  * Non-recruitment of non-english speakers is due to the study being a small pilot study that is used to assess the stone free rate for patients treated with a ureteroscopy or mini-PCNL using ClearPETRA suction access sheaths in a small portion of our patient population seeking treatment for stones. The team also does not possess the bandwidth or personnel to consent patients who are non-English speaking.","ALL","18 Years",{"count":74,"type":75},80,"ESTIMATED","INTERVENTIONAL",[78],"NA","The objective of the study is to compare the stone free rates with ureteroscopy utilizing the ClearPETRA suction ureteral access sheath, and mini-PCNL; both procedures and ClearPETRA sheaths are standard of care and are used regularly for stone treatment. Our primary objective is to assess the complete stone free rate with both procedures.",[81,82,83],"Kidney Stones","Nephrolithiasis","Urolithiasis",[85,9,15,86,87,88],"kidney stone","ClearPETRA","kidney stone interventional treatment","kidney stone 1cm-3cm","2026-04-26",{"date":91,"type":92},"2026-04-30","ACTUAL",{"date":94,"type":75},"2026-04-25",{"date":96,"type":75},"2027-12",{"name":5,"class":6},1]