Kubota Hiroshi, Endo Hidehito, Ishii Hikaru, Tsuchiya Hiroshi, Inaba Yusuke, Takahashi Yu, Terakawa Katsunari
Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan.
J Cardiothorac Surg. 2018 Nov 16;13(1):116. doi: 10.1186/s13019-018-0801-y.
It is still difficult to create a secure linear conduction block on a beating heart from the epicardial side. To overcome this drawback we developed an infrared coagulator equipped with a cuboid light-guiding quartz rod. This study was designed to electrophysiologically confirm the efficacy of a new ablation probe using infrared energy in a clinical case.
The infrared light from a lamp is focused into the newly developed cuboid quartz rod, which has a rectangular distal exit-plane that allows 30 mm × 10 mm linear photocoagulation. Two pairs of electrodes were attached to the right atrium of a patient who was undergoing surgery. Each pair of electrodes was placed 10 mm from an ablation line. The change in conduction time between the two pairs of electrodes was measured during ablation. The predicted conduction time delay ratio was 1.54.
The actual conduction time after ablation was 1.38-1.43 times longer than the pre-ablation conduction time.
The infrared ablation using a newly developed cuboid probe made it possible to create a linear conduction block on the beating right atrial free wall clinically.
从心外膜侧在跳动的心脏上创建安全的线性传导阻滞仍然很困难。为克服这一缺点，我们开发了一种配备长方体导光石英棒的红外凝固器。本研究旨在通过电生理方法在临床病例中证实一种使用红外能量的新型消融探头的有效性。
来自灯的红外光聚焦到新开发的长方体石英棒中，该石英棒具有矩形远端出射面，可实现30毫米×10毫米的线性光凝。将两对电极连接到一名正在接受手术的患者的右心房。每对电极放置在距消融线10毫米处。在消融过程中测量两对电极之间传导时间的变化。预测的传导时间延迟率为1.54。
消融后的实际传导时间比消融前的传导时间长1.38 - 1.43倍。
使用新开发的长方体探头进行红外消融在临床上能够在跳动的右心房游离壁上创建线性传导阻滞。
