房室结双径路房室双径路.ppt

房蜜结双径路 Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  概念 心脏传导系统的某一部分,在相近的条 件下,出现了传导速度和不应期截然不同的 两种状态,这时就可以认为该部分出现了功 能性的纵向分离,即传导系统双径路 在房室结发生的双径路为房室结双径路。 Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  二、房蜜结的部位及解剖 1、部位 右心房,Koch 三角内 Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  二、房蜜结的部位及解剖 Fast Common pathway A pathway Compact Av node annul AV bundle ostium Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  二、房宣结的部位及解剖 SVC A A FO Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  二、房蜜结的部位及解剖 、解剖 (1)房室结位于房间隔前上部,近端呈分叉状 (2房室结前上组纤维分布于心房肌周围,其近端和远端 都插入房室结, 右纤维三角 即快通道纤维 房室结动脉 (后下组纤维即慢 膜部室闷隔 冠状窦 通道纤维,向下 行到冠状窦囗 纤维瓣环 左束支右束支 Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  房问隔 结间传导束 二尖瓣 房室结 中心纤维体 膜部室间隔 左束支 右束支 室间隔 房室结解剖 Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  房蜜结的部位及解剖 2、心肌与房室结联系 心肌与房室结联系有移行细胞区,分为4组与房室结相联, 其有别于心房肌细胞,属于传导系统的特殊心肌,错综地围 绕房室结,形成房结区,属于交界区一部分。 Valadon onry. ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L  二、房蜜结的部位及解剖 4组细胞走行方向 (1)卵圆窝前方下行,达房室结前上部; 前上输入 (2)来自左房,从 Todaro腱下行; 卵四 (冠状静脉窦口上缘下行,从房室结后 三尖瓣隔 深部输入 部联系心房; (4)冠状静脉窦囗下缘下行,从房室结后