It is typically a transitional rhythm between frequent premature atrial complexes pacs and atrial flutter fibrillation. 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. How to differentiate wandering atrial pacemaker and. Multifocal atrial tachycardia is an unusual variant of ectopic atrial tachycardia. Multifocal atrial tachycardia is a tachycardic version of wandering atrial pacemaker in which the atrial rate is greater than 100 beats per minute. These changes in the locus of stimulation within the atria affect the morphology of the p waves.
Multifocal atrial tachycardia is just a faster version of wandering atrial pacemaker. 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 mat is a heart condition characterized by an irregularly fast heartbeat, otherwise known as arrhythmia. Fast 100 bpm often changing shape and size from beat to beat at least three differing forms normal 0. This is an electrocardiogram that monitors and records heartbeat activity. The qrs complex is generally normal, unless there is concomitant intraventricular conduction disturbance.
Multifocal atrial tachycardiamultifocal atrial tachycardia ecg p weva 3 pr intervalspr intervals. Multifocal atrial tachycardia mat is a supraventricular tachycardia with a rapid, irregular atrial rhythm arising from multiple ectopic foci within the atria. The criteria is the same as wandering atrial pacemaker with the only difference being the heart rate exceeds 100 bpm. The patient will present with a heartbeat faster than 100.
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. Multifocal atrial tachycardia mat litfl ecg library. How to differentiate wandering atrial pacemaker and multifocal atrial rhythm. In addition to a heart rate greater than 100 beats per minute, the characteristic electrocardiographic feature is variability in p wave morphology, with each unique p wave morphology felt to indicate a different site of atrial origin. Figure 1 below displays two ecgs with junctional escape rhythm. Regular ventricular rhythm with rate 4060 beats per minute. Most commonly seen in patients with severe copd or congestive heart failure. Multifocal atrial tachycardia mat is an arrhythmia that can be seen in a variety of clinical disorders.
1365 320 287 1011 1450 188 1538 383 525 1305 126 233 415 1303 1329 1390 1554 147 1062 58 659 649 1497 1215 464 838 1471 233 547 596 97 642 830 1574 1 1267 721 635 104 179 103 372 1104 496 1020 1401