Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions · 2025
Optimizing Stent Placement in Ostial Coronary Lesions With the Floating Balloon Technique: The OSTIAL (Optimizing Stent In Aorto-Ostial Lesion) Pivotal Study.
СтатьяНаблюдательное исследованиеМногоцентровое исследованиеНазвание и аннотация: Перевод в очереди
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Digne Franck, Darmon Arthur, Belguidoum Salim, Nejjari Mohammed, Feignoux Jacques
Аннотация
BACKGROUND: Managing aorto-ostial coronary lesions during percutaneous coronary interventions (PCI) presents significant challenges due to complex anatomy, catheter instability, and risks of stent misplacement.
AIMS: The OSTIAL pivotal study aimed to assess the feasibility and precision of the floating balloon technique for optimizing stent placement in aorto-ostial lesions (AOL), with post-procedural coronary computed tomography angiography (CCTA) used to evaluate stent positioning.
METHODS: This prospective, dual-center observational study included 12 patients undergoing PCI for AOL using the floating balloon technique. The technique stabilizes the guiding catheter by positioning a balloon in the aorta, thereby defining the aorto-ostial landing zone (AOLZ) for precise stent placement. Post-procedural CCTA were systematically performed to assess the positioning of the stent. The primary outcome was technical success including optimal stent placement within the AOLZ and proximal anatomy-dependent geographic miss.
RESULTS: The primary outcome was achieved in 83% of cases, with 66% showing complete AOLZ coverage and 17% classified as a proximal anatomy-dependent geographic miss. Proximal procedure-dependent geographic miss occurred in only 17% of cases, with limited stent protrusion into the aorta (2.3 and 2.9 mm).
CONCLUSIONS: The floating balloon technique demonstrated feasibility and precision in optimizing stent placement in AOL, as assessed by CCTA. It offers a promising, cost-effective, and practical alternative to other techniques. Larger studies are required to confirm its efficacy and long-term benefits.
AIMS: The OSTIAL pivotal study aimed to assess the feasibility and precision of the floating balloon technique for optimizing stent placement in aorto-ostial lesions (AOL), with post-procedural coronary computed tomography angiography (CCTA) used to evaluate stent positioning.
METHODS: This prospective, dual-center observational study included 12 patients undergoing PCI for AOL using the floating balloon technique. The technique stabilizes the guiding catheter by positioning a balloon in the aorta, thereby defining the aorto-ostial landing zone (AOLZ) for precise stent placement. Post-procedural CCTA were systematically performed to assess the positioning of the stent. The primary outcome was technical success including optimal stent placement within the AOLZ and proximal anatomy-dependent geographic miss.
RESULTS: The primary outcome was achieved in 83% of cases, with 66% showing complete AOLZ coverage and 17% classified as a proximal anatomy-dependent geographic miss. Proximal procedure-dependent geographic miss occurred in only 17% of cases, with limited stent protrusion into the aorta (2.3 and 2.9 mm).
CONCLUSIONS: The floating balloon technique demonstrated feasibility and precision in optimizing stent placement in AOL, as assessed by CCTA. It offers a promising, cost-effective, and practical alternative to other techniques. Larger studies are required to confirm its efficacy and long-term benefits.