Marriott’s Practical ecg

U.S. Food and Drug Administration (FDA)

The text delves into the mechanisms underlying cardiac arrhythmias, differentiating between those caused by accelerated automaticity and impulse conduction blocks. It explains how the origin and mechanism of tachyarrhythmias dictate treatment strategies, emphasizing addressing underlying systemic conditions for accelerated automaticity. The document also defines and categorizes impulse conduction blocks, such as AV block and bundle-branch block, and their impact on cardiac rhythm and rate. It includes detailed discussions on various ventricular tachyarrhythmias and related conditions like Wolff-Parkinson-White syndrome.