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一.左室传导延迟左室传导延迟是可在心电图上检测到的常见异常临床现象
尤其是左心功能不全患者。正常的心室去极化发生在脉冲穿过房室(AV)结和His束之后。冲动在心室内传导是通过希-浦系统的激活或去极化
其中包括很多分支
主要分为两个分支
即右束支和左束支
其通过浦肯野纤维快速传递去极化脉冲至右心室和左心室。所以左束支又被分成2个大分支和1个小分支
两个大分支分别是左前分支和左后分支
小分支就是间隔支(中间支)
支配室间隔(心室自左向右除极的起始部位)。去极化波穿过心
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