1.09 Mechanisms of Arrhythmia

In this episode, we delve into the mechanisms of arrhythmias, exploring the roles of abnormal automaticity, early afterdepolarizations (EADs), and delayed afterdepolarizations (DADs). What is the difference between disorders of impulse formation and disorders of impulse conduction? How do the phases of the ventricular action potential (0, 1, 2, 3, 4) differ from the phases of the sinoatrial nodal action potential (4, 0, 3)? Which arrhythmias occur via abnormal automaticity vs normal automaticity? Which arrhythmias occur via early after depolarization (EAD) vs delayed afterdepolarization (DAD)? Which ventricular tachycardia subtypes do not occur via EADs or DADs? Tune in for answers to these questions.

Difficulty Level: Advanced

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