Cardiac Arrhythmias: Difference between revisions

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===Triggered Activity===
===Triggered Activity===
Triggered activity is activity of a cell triggered by a preceding activation. Due to early or delayed afterdepolarizations the resting membrane depolarizes and, when reaching threshold potentials, activates the cell. This mechanism can repeat itself en thus self-perpetuate.  
Triggered activity is activity of a cell triggered by a preceding activation. Due to early or delayed afterdepolarizations the resting membrane depolarizes and, when reaching threshold potentials, activates the cell. This mechanism can repeat itself en thus self-perpetuate.  
In early afterdepolarizations depolarization occurs during the action potential (phase 2 and 3).  
* In early afterdepolarizations depolarization occurs during the action potential (phase 2 and 3).  
Delayed afterdepolarizations occur after the cell has recovered after completion of repolarization.
* Delayed afterdepolarizations occur after the cell has recovered after completion of repolarization.


==Disorders of Impulse Conduction==
==Disorders of Impulse Conduction==
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