Kim Gi Beom
Department of Pediatrics, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, Korea.
Korean Circ J. 2025 Aug;55(8):659-671. doi: 10.4070/kcj.2025.0083. Epub 2025 Apr 22.
Large sized valve of a self-expandable nature has been suggested as the next generation transcatheter pulmonary valve to implant for various type of native right ventricular outflow tract (RVOT) lesions. Tissue engineered Pulsta valve including decellularization, alpha-galactosidase treatment provide longer valve durability and knitted woven nitinol wire stent provide low risk of stent fracture at the dynamic RVOT. Compact tubular design of Pulsta valve also offer easy valve loading to delivery system and good trackability to valve landing area. From the worldwide experience over 750 cases by February 2025, adaptability of Pulsta valve for various RVOT has proven. Pulsta valve has been implanted for various type of main pulmonary artery (PA) including pyramidal, reverse pyramidal shape and for branch PA stenosis including stent in the branch PA. In case of extremely large native RVOT anatomy, Pulsta valve can be implanted in both branch PA respectively. For the stenotic RVOT or failed bioprosthetic valve, Pulsta valve can also be implanted with or without pre-stenting. Recapturability using delivery system itself if less than one third of valve were flared outside of sheath and capability of whole delivery system retrieval using hooking system are another merit for safe procedure. Though the experience of Pulsta valve for various RVOT diseases is newly accumulated in many centers every day, we still have to learn more about Pulsta valve applicability for various RVOT diseases and long-term outcomes after Pulsta valve implantation.
具有自膨胀特性的大型瓣膜已被提议作为下一代经导管肺动脉瓣膜,用于植入各种类型的天然右心室流出道(RVOT)病变。组织工程化的Pulsta瓣膜包括去细胞化、α-半乳糖苷酶处理,可提供更长的瓣膜耐久性,编织镍钛诺丝支架在动态RVOT中提供较低的支架断裂风险。Pulsta瓣膜的紧凑型管状设计还便于将瓣膜装载到输送系统中,并具有良好的向瓣膜着陆区域的可追踪性。截至2025年2月,全球超过750例的经验已证明Pulsta瓣膜对各种RVOT的适应性。Pulsta瓣膜已被植入各种类型的主肺动脉(PA),包括锥形、倒锥形,以及用于分支PA狭窄,包括分支PA中的支架。在天然RVOT解剖结构极大的情况下,Pulsta瓣膜可分别植入两个分支PA。对于狭窄的RVOT或生物人工瓣膜功能失效,Pulsta瓣膜也可在有或无预植入支架的情况下植入。如果瓣膜少于三分之一在鞘管外展开,使用输送系统本身的可回收性,以及使用钩住系统回收整个输送系统的能力是安全操作的另一个优点。尽管每天都有许多中心在积累Pulsta瓣膜用于各种RVOT疾病的新经验,但我们仍需更多了解Pulsta瓣膜对各种RVOT疾病的适用性以及Pulsta瓣膜植入后的长期结果。