[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"aorto-ostial-coronary-lesions\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:aorto-ostial-coronary-lesions":27},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":15,"eligibilityCriteria":16,"healthyVolunteers":11,"sex":17,"minAge":18,"maxAge":4,"enrollmentInfo":19,"targetDuration":4,"studyType":22,"phases":23,"briefSummary":25,"conditions":26,"keywords":4,"overallStatus":30,"whyStopped":4,"lastUpdateSubmitDate":31,"lastUpdatePostDateStruct":32,"startDateStruct":35,"completionDateStruct":37,"leadSponsor":39,"locationsCount":42},"100657057","the-ostial-study-optimization-of-stent-placement-in-aorto-ostial-lesions-100657057",false,"NCT07835048","The OSTIAL Study (Optimization of Stent Placement in Aorto-ostial Lesions)","Optimisation du Positionnement Des Stents Dans Les lésions Aorto-ostiales : étude Multicentrique Historico-prospective Avec Phase randomisée Comparant l'Angioplastie Coronaire Avec ou Sans Technique du Floating Ballon Étude OSTIAL (Optimizing Stent In Aorto-Ostial Lesion)","OSTIAL","Inclusion Criteria:\n\n* Male or female aged over 18 years\n* Prospective part: Patient who has signed an informed consent form\n* Retrospective part: No objection to the use of personal data for this research\n* Indication for coronary angioplasty for an aorto-ostial lesion (right coronary artery or left main coronary artery) for patients included in the prospective part \u002F Patients in the historical part who underwent coronary angioplasty for an aorto-ostial lesion (right coronary artery or left main coronary artery) using the \"floating balloon\" (FB) technique, followed by a CCTA assessment of positioning\n* Affiliation with or beneficiary of a social security scheme.\n\nExclusion Criteria:\n\n* Contraindication to coronary CT angiography (severe renal impairment not requiring dialysis (GFR ≤ 30 ml\u002Fmin)), applicable only to patients included in the prospective part\n* Refusal of consent (patients included in the prospective part)\n* Objection to the use of personal data (patients in the retrospective part)\n* Patient unable to read, write, or understand French\n* Vulnerable patient as defined by Article L1121-6 of the Public Health Code (CSP)\n* Adult patient placed under guardianship, curatorship, or judicial protection\n* Patient unable to personally provide consent pursuant to Article L.1121-8 of the CSP, or an adult under legal protection\n* Pregnant or breastfeeding woman as defined by Article L1121-5 of the CSP","ALL","18 Years",{"count":20,"type":21},75,"ESTIMATED","INTERVENTIONAL",[24],"NA","Aorto-ostial coronary lesions present a significant challenge during coronary angioplasty. This is due to the difficulty of precisely identifying the aorto-ostial plane and the frequent instability of the guiding catheter during stent deployment.\n\nDespite the angiographic appearance being deemed optimal, several studies have shown a high rate of suboptimal stent positioning at the ostium when subsequent coronary CT angiography (CCTA) assessment is performed.\n\nThis suboptimal positioning may be linked to incomplete ostial coverage, which could increase the risk of in-stent restenosis. It may also be linked to excessive stent protrusion into the aorta, which could compromise future procedures, particularly in the context of transcatheter aortic valve replacement.\n\nThe \"Floating Balloon\" (FB) technique has been developed to improve system stability and to reliably mark the aorto-ostial landing zone (AOLZ). A previous study demonstrated the feasibility and accuracy of this technique.\n\nThe aim of the current study is to assess the clinical effectiveness of the Floating Balloon. Although this technique is already in use, no study has yet conducted a systematic assessment of stent positioning using CCTA.\n\nThe study utilised a combined retrospective-prospective approach to comprehensively evaluate the incidence of suboptimal stent positioning associated with the Floating Balloon technique. This evaluation was conducted by systematically comparing patient outcomes between those treated with the FB and those treated without the FB. The study employed CCTA as a key tool to assess stent position, ensuring a precise analysis of the data.\n\nTo achieve this, it is recommended that follow-up data from patients who have already undergone the FB procedure and had their stent position assessed via CCTA (retrospective component) be analysed, while also enrolling new patients and randomizing them into FB and non-FB groups (prospective component).",[27,28,29],"Aorto-ostial Coronary Lesions","Coronary Angioplasty","Floating Balloon\" (FB) Technique","NOT_YET_RECRUITING","2026-09-22",{"date":33,"type":34},"2026-09-24","ACTUAL",{"date":36,"type":21},"2026-10-30",{"date":38,"type":21},"2028-10-30",{"name":40,"class":41},"Centre Cardiologique du Nord","OTHER",6]