零射线!北京儿童医院首开儿科绿色射频消融

2017-08-18 李凯菲 北京儿童医院

零射线!北京儿童医院首开儿科绿色射频消融

这天,6 岁的小豆豆 ( 化名 ) 很开心,因为医生阿姨刚刚宣布困扰他两年多的频发性室性早搏的“帽子” 终于可以摆脱了,意味着他今后可以跟小伙伴们一起尽情打闹玩耍。两个月前,小豆豆在北京儿童医院接受了射频消融术,为他做手术的医生阿姨是北京儿童医院心脏中心袁越主任,而这个手术还有一个特殊的“帮手”——三维立体标测系统。这究竟是何方“神器”呢?

提起心脏射频消融,很多人都会联想到成人房颤治疗,殊不知,这一技术在儿科心脏领域也已开展多年,但由于儿童血管细、心脏小带来的高风险,以及担心 X 线辐射的伤害等,临床应用受限。自2010 年起,北京儿童医院在全国首家采用全三维立体标测系统 ( Ensite ) 开展儿科射频消融,这一系统就像给手术医生安了一双“慧眼”,无须在 X 光线下即可为患儿实施射频消融术精准“领航” ( 放置导管进行消融,解决患儿快速心率失常和异位心律等 ) ,而且更安全。经过七年摸索,近日终于成功实现真正的“绿色消融”,即零射线曝光,同时实现成功率 90% 以上和并发症零记录。北京儿童医院心脏中心袁越主任就是在这双“眼睛”的帮助下为小豆豆顺利完成了手术,全程没有“吃线儿”。


( 图中屏幕可看到三维立体标测系统显示出来的导管位置 )

心脏射频消融术是将电极导管经静脉或动脉血管送入心腔特定部位,释放射频电流导致局部心内膜及心内膜下心肌凝固性坏死,达到阻断快速心律失常异常传导束和起源点的介入性技术。因此,将电极导管精准地送达病变部位是这一手术的关键。以往的手术需要在 X 光线下进行,手术医生在插导管的同时需要持续暴露在 X 光线下,以便根据电脑上的心脏影像明确导管位置。手术中,即便给患儿颈部和生殖部位进行保护,手术医生身穿铅衣,依然会吃进不少的射线。

北京儿童医院心脏中心袁越主任解释,类似于 GPS 导航系统,全三维立体标测系统 ( Ensite ) 根据三维电场确定在心血管腔内电极导管位置,通过连续采集电极导管在心血管腔内的移动轨迹,构建血管、心脏三维几何结构,将导管位置及其运动实时清晰地显示在电脑屏幕上,引导手术操作。

这一系统的应用不仅为患儿和医生避免了 X 线的辐射,还扩大了手术范围,很多非典型部位的射频消融手术在逐步开展。更重要的是提高了手术安全性。比如某次放电消融无效后,电脑屏幕上就会将该点标注为“禁放区”,避免了重复放电消融。此外,还能很大程度上避免一些并发症,比如心包填塞、肺栓塞等。自 2010 年引用该系统后,北京儿童医院心脏射频消融手术实现并发症零记录。

目前,北京儿童医院心脏中心每年成功为 200 多个“小豆豆”们实施射频消融手术,几乎都是快速心率失常,包括室上速、室速、频发室早等,频发室早的患儿中一部分病因是特发性,另一部分是心肌炎或心肌损害的后遗症,严重影响孩子们的生活和学习。截至目前,在袁越主任团队成功救治的“小豆豆”们中,年龄最小的是 1 岁,体重只有 11KG。

自 2010 年引进三维立体标测系统 ( Ensite ) 后,北京儿童医院心脏中心射频消融团队一直努力摸索经验,从最初主要依赖 X 光线,到逐渐减少 X 光线应用,增加三维立体标测系统的使用,七年磨一剑,到如今终于实现儿科射频消融零射线曝光,真正做到了“儿童心率失常绿色射频消融” 。


北京儿童医院心脏中心射频消融团队

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    2018-04-04 owlhealth

    不错耶.学习了

    0

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    2017-08-18 胖红

    学习了很多的事情,

    0

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