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Multifocal Atrial Tachycardia | Reference Guide

ecg rhythm strip for reference guide


EKG Features

Rate: Fast (> 100 bpm)
Rhythm: Irregular
P Wave: Often changing shape and size from beat to beat (at least three differing forms)
PR Interval: Variable
QRS: Normal (0.06-0.10 sec)

Multifocal atrial tachycardia is caused by electrical signals being sent from multiple (ectopic) locations in the atria rather than from the sinoatrial (SA) node. These multiple signals cause a rapid, inefficient heartbeat. This arrhythmia is more commonly found in patients over 50 years of age, particular in patients with lung disorders. Also see Wandering Atrial Pacemaker, a related abnormality.
External Source: http://en.wikipedia.org/wiki/Multifocal_atrial_tachycardia
Wikipedia
Multifocal Atrial Tachycardia - Reference Guide | EKG.Academy

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