Atrial Repolarization Occurs at the Same Time as the

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This rhythm abnormality affects 3 to. The ventricle whose bundle is blocked will have to wait for electrical impulses to spread from the other.


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Atrial fibrillation AF is the most prevalent cardiac arrhythmia affecting 1 to 2 of the general population.

. AF is associated with increased morbidity and mortality and is a risk factor for embolic stroke and. It is characterized by rapid and disorganized atrial activation leading to impaired atrial function which can be diagnosed on an EKG by lack of a P-wave and irregular QRS complexes. Bundle branch block occurs if a bundle branch is dysfunctional and unable to transmit the impulse.

Atrial tachycardia is a form of supraventricular tachycardia SVT usually seen in patients with structural heart abnormalities but can be seen in patients with structurally normal hearts. Unlike other SVTs atrial tachycardia does not depend upon the atrioventricular junction or accessory pathways for initiation or maintenance. The Purkinje network enables fast impulse conduction so that the action potential can be delivered to the whole myocardium at the same time approximately.

Atrial fibrillation is the most common cardiac arrhythmia family physicians are likely to encounter.


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