触发活动指异位激动的产生是由一个动作电位的触发所形成,而不能由心肌自发的独立产生,且异位激动点也总是在一次正常的除极后发生,也就是以后除极为基础的心电活动,因此也称之为后除极。根据它在动作电位时相中出现的早晚,可分为早期后除极和延迟后除极两种。异位性心律失常机制大致上可分为自律性增强、折返及触发活动三大类,触发活动可能是引起异位心律失常的重要机制之一。
自律性异常、触发活动和折返形成是房速的主要发生机制。
Ectopic automaticity, triggered activity and reentry may be the mechanisms of the arrhythmia.
结论触发活动可能在肺静脉肌袖致心律失常机制中起重要作用。
Conclusion The trigger activity might play an important role in the arrhythmogenis in pulmonary vein muscle sleeves.
那应足以触发活动存储滤波器,即使你从来没有实际调用的代码在运行时。
That should be enough to trigger Play Store filters, even if you never actually invoke the code at runtime.
Here, I've just picked a couple of the pictures that I showed you last time when we were talking about cell communication in the immune system, What happens after the vaccine is introduced into your body is that it initiates cellular events.
我挑选了,我上次给你们展示的几幅图片,当我们讨论到,免疫系统中的细胞沟通时,讲到过当人体接种疫苗之后,能够触发,细胞活动
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