[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100659453":3},{"organization":4,"outcomesModule":7,"designInfo":34,"detailedDescription":37,"studyPopulation":38,"armGroups":39,"interventions":50,"overallOfficials":60,"centralContacts":65,"locations":71,"responsibleParty":87,"collaborators":33,"id":89,"slug":90,"hasResults":91,"nctId":92,"briefTitle":93,"officialTitle":94,"acronym":33,"eligibilityCriteria":95,"healthyVolunteers":91,"sex":96,"minAge":97,"maxAge":33,"enrollmentInfo":98,"targetDuration":33,"studyType":101,"phases":33,"briefSummary":102,"conditions":103,"keywords":106,"overallStatus":73,"whyStopped":33,"lastUpdateSubmitDate":110,"lastUpdatePostDateStruct":111,"startDateStruct":114,"completionDateStruct":116,"leadSponsor":118,"locationsCount":119},{"fullName":5,"class":6},"Antalya Health Sciences University","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":13,"otherOutcomes":33},[9],{"measure":10,"description":11,"timeFrame":12},"Stone-Free Rate","Proportion of patients who are stone-free, defined as no residual stone fragments or residual fragments smaller than 4 mm. Stone-free status will be assessed by non-contrast computed tomography (NCCT) or, for radiopaque stones, by plain kidney-ureter-bladder (KUB) radiography.","1 month after surgery",[14,18,22,26,29],{"measure":15,"description":16,"timeFrame":17},"Postoperative Fever and Infectious Complications","Proportion of patients who develop postoperative fever (body temperature ≥38°C), urinary tract infection, or sepsis.","Within 7 days after surgery",{"measure":19,"description":20,"timeFrame":21},"Operative Time","Total duration of surgery, measured in minutes from insertion of the ureteroscope to placement of the ureteral stent or end of the procedure","During surgery",{"measure":23,"description":24,"timeFrame":25},"Postoperative Complications","Proportion of patients with postoperative complications, graded according to the Clavien-Dindo classification.","Within 30 days after surgery",{"measure":27,"description":28,"timeFrame":21},"Total Laser Energy","Total laser energy delivered during lithotripsy, measured in kilojoules (kJ) as recorded by the laser device.",{"measure":30,"description":31,"timeFrame":32},"Length of Hospital Stay","Duration of hospital stay after surgery, measured in days.","From surgery to discharge, an average of 1-3 days",null,{"allocation":33,"interventionModel":33,"interventionModelDescription":33,"primaryPurpose":33,"observationalModel":35,"timePerspective":36,"maskingInfo":33},"COHORT","PROSPECTIVE","Retrograde intrarenal surgery (RIRS) is a widely used minimally invasive treatment for kidney stones. Ureteral access sheaths are commonly used during RIRS to facilitate repeated access to the kidney and to help maintain low intrarenal pressure. Suction (aspiration) ureteral access sheaths are a newer type of sheath that allows continuous removal of irrigation fluid and stone fragments during surgery, which may improve stone clearance and reduce infectious complications. This study aims to compare surgical outcomes, stone-free rates, and complication rates between conventional and suction ureteral access sheaths in patients undergoing RIRS. Both sheath types are CE-marked medical devices used within their intended purpose.","Adult patients with kidney stones who are scheduled to undergo retrograde intrarenal surgery (RIRS) with either a conventional or a suction ureteral access sheath at the Department of Urology, University of Health Sciences Antalya Training and Research Hospital, Antalya, Turkey.",[40,45],{"label":41,"type":33,"description":42,"interventionNames":43},"Conventional Ureteral Access Sheath Group","Adult patients with kidney stones undergoing retrograde intrarenal surgery (RIRS) with a conventional (non-suction) ureteral access sheath as part of routine clinical care.",[44],"Device: Conventional Ureteral Access Sheath",{"label":46,"type":33,"description":47,"interventionNames":48},"Suction Ureteral Access Sheath Group","Adult patients with kidney stones undergoing retrograde intrarenal surgery (RIRS) with a suction (aspiration) ureteral access sheath as part of routine clinical care.",[49],"Device: Suction Ureteral Access Sheath",[51,56],{"type":52,"name":53,"description":54,"armGroupLabels":55,"otherNames":33},"DEVICE","Conventional Ureteral Access Sheath","A standard CE-marked ureteral access sheath without suction, placed during RIRS to provide repeated access to the kidney and facilitate irrigation outflow.",[41],{"type":52,"name":57,"description":58,"armGroupLabels":59,"otherNames":33},"Suction Ureteral Access Sheath","A CE-marked ureteral access sheath connected to a negative-pressure suction system, placed during RIRS to allow continuous aspiration of irrigation fluid and stone fragments.",[46],[61],{"name":62,"affiliation":63,"role":64},"Mahmut E İslamoglu, Prof. Dr","University of Health Sciences Antalya Training and Research Hospital","STUDY_DIRECTOR",[66],{"name":67,"role":68,"phone":69,"phoneExt":33,"email":70},"Baran Arslan","CONTACT","+90 5532487485","drbrnarsln@gmail.com",[72],{"facility":63,"status":73,"city":74,"state":75,"zip":76,"country":77,"countryCode":33,"cosmosGeoPoint":78,"geoPoint":83,"contacts":84},"RECRUITING","Antalya","Muratpasa","07100","Turkey (Türkiye)",{"type":79,"coordinates":80},"Point",[81,82],30.69556,36.90812,{"lat":82,"lon":81},[85],{"name":86,"role":68,"phone":69,"phoneExt":33,"email":70},"Baran Arslan, MD",{"type":88,"investigatorFullName":33,"investigatorTitle":33,"investigatorAffiliation":33,"oldNameTitle":33,"oldOrganization":33},"SPONSOR","100659453","comparison-of-suction-and-conventional-ureteral-access-sheaths-in-kidney-stone-surgery-100659453",false,"NCT07866209","Comparison of Suction and Conventional Ureteral Access Sheaths in Kidney Stone Surgery","Comparison of Conventional and Suction Ureteral Access Sheaths Used During Retrograde Intrarenal Surgery","Inclusion Criteria:\n\n* Age 18 years or older\n* Kidney stones scheduled for retrograde intrarenal surgery (RIRS)\n* Provision of written informed consent\n\nExclusion Criteria:\n\n* Active untreated urinary tract infection\n* Uncorrected bleeding disorder or anticoagulant therapy that cannot be discontinued\n* Pregnancy\n* Anatomical abnormalities of the urinary tract (e.g., ureteral stricture, horseshoe kidney)\n* Failure to place a ureteral access sheath\n* Incomplete follow-up data","ALL","18 Years",{"count":99,"type":100},160,"ESTIMATED","OBSERVATIONAL","The goal of this observational study is to compare conventional and suction (aspiration) ureteral access sheaths used during retrograde intrarenal surgery (RIRS) in adults with kidney stones.\n\nThe main questions it aims to answer are:\n\n* Does the use of a suction ureteral access sheath increase the stone-free rate compared with a conventional sheath?\n* Does the use of a suction sheath reduce operative time and complications such as postoperative fever and infection?\n\nResearchers will compare patients treated with a conventional ureteral access sheath with patients treated with a suction ureteral access sheath during routine RIRS.\n\nParticipants will:\n\n* Undergo RIRS for kidney stones as part of their routine clinical care\n* Have their surgical data recorded, including operative time and any complications\n* Attend routine follow-up visits, including imaging to assess whether stones remain",[104,105],"Kidney Calculi","Nephrolithiasis",[107,108,57,109,10],"Retrograde Intrarenal Surgery","Ureteral Access Sheath","Flexible Ureteroscopy","2026-10-04",{"date":112,"type":113},"2026-10-08","ACTUAL",{"date":115,"type":113},"2026-03-18",{"date":117,"type":100},"2027-05-01",{"name":5,"class":6},1]