JACC. Cardiovascular interventions · 2026
Leaflet Modification Technique With UNICORN in Failed Aortic Bioprosthesis: Procedural Step-by-Step, Best Practice, and Troubleshooting.
СтатьяОбзорНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
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Ошибки и ограничения
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Chan Kwong-Yue Eric, Un Ka-Chun, Chiu Ho-On Alston Conrad, Tai-Leung Chan Daniel, Sze Shu-Yue, Yin Wei-Hsian, Lee Yung-Tsai, Lee Yee-Tat, Lin Pei, Abdel-Wahab Mohamed, Pop Andrei M, Tchetche Didier, Freeman Phillip, De Backer Ole, Poon Karl, Chandavimol Mann, Tang Gilbert H L, Wong Chun-Ka, Lam Simon Cheung-Chi
Аннотация
The UNICORN (undermining iatrogenic coronary obstruction with radiofrequency needle) technique was developed in 2022 to reduce the risk for coronary obstruction during valve-in-valve transcatheter aortic valve replacement. The procedure involves traversing the target leaflet with an electrified wire, followed by serial dilation with coronary and peripheral balloons. A balloon-expandable valve is then delivered into the de novo fenestration for intraleaflet deployment. As the balloon-expandable valve expands, the target leaflet is opened and displaced away from the at-risk coronary ostium, resulting in a minimal neoskirt on the target side. Since its introduction, the technique has been adopted at numerous centers worldwide, with various modifications and adaptations. In this paper, a step-by-step description of the UNICORN procedure is provided, and troubleshooting strategies for potential challenges are discussed.