Multifocal atrial tachycardia mat is an arrhythmia that can be seen in a variety of clinical disorders. Multifocal atrial tachycardia mat is a supraventricular tachycardia with a rapid, irregular atrial rhythm arising from multiple ectopic foci within the atria. A rapid, irregular atrial rhythm arising from multiple ectopic foci within the atria. How to differentiate wandering atrial pacemaker and. Multifocal atrial tachycardia mat litfl ecg library. The patient will present with a heartbeat faster than 100. P wave morphology is abnormal when compared with sinus p wave due to ectopic origin. Multifocal atrial tachycardiamultifocal atrial tachycardia ecg p weva 3 pr intervalspr intervals. Multifocal atrial tachycardia is just a faster version of wandering atrial pacemaker. This arrhythmia is characterized by a heart rate of greater than 100 beats per minute with organized atrial activity yielding three or more different nonsinus pwave morphologies in the same lead. These changes in the locus of stimulation within the atria affect the morphology of the p waves. Figure 1 below displays two ecgs with junctional escape rhythm. Regular ventricular rhythm with rate 4060 beats per minute.
It is typically a transitional rhythm between frequent premature atrial complexes pacs and atrial flutter fibrillation. The 12lead ecg criteria to diagnose multifocal atrial tachycardia mat is discussed along with causes, treatment and 12lead ecg examples. Fast 100 bpm often changing shape and size from beat to beat at least three differing forms normal 0. The criteria is the same as wandering atrial pacemaker with the only difference being the heart rate exceeds 100 bpm.
Multifocal atrial tachycardia is a tachycardic version of wandering atrial pacemaker in which the atrial rate is greater than 100 beats per minute. As seen in figure 4, it is characterized by an irregular rhythm with clearly visible pwaves on the contrary to atrial fibrillation but the pwave morphology varies from one beat to another. Multifocal atrial tachycardia is an unusual variant of ectopic atrial tachycardia. This is an electrocardiogram that monitors and records heartbeat activity. This article explains clinical characteristics and ecg changes in left and right atrial enlargement hypertrophy. Most commonly seen in patients with severe copd or congestive heart failure. The qrs complex is generally normal, unless there is concomitant intraventricular conduction disturbance. Retrograde pwave before or after the qrs, or no visible pwave. Amal mattus ecg case of the week april, 2020 amal mattus ecg case of the week april 6, 2020 amal mattus ecg case of the week march 30, 2020. How to differentiate wandering atrial pacemaker and multifocal atrial rhythm. Multifocal atrial tachycardia mat is a heart condition characterized by an irregularly fast heartbeat, otherwise known as arrhythmia.