The incidence of multifocal atrial tachycardia (MAT) is very low and accounts for less than 1% of supraventricular tachycardia in infants and children. In this report, the clinical characteristics, medical treatment and outcome of MAT in 2 children are described.

Focal atrial tachycardia (FAT) is an uncommon cause of supraventricular tachycardia in children, which occurs because of an abnormal, nonsinus, atrial focus with enhanced automaticity. 1 – 3 FAT often occurs as an incessant arrhythmia.

Multifocal atrial tachycardia (MAT), in general, has a favorable outcome. However, there are insufficient data regarding MAT in a pediatric population. This study sought to determine the clinical course of MAT and identify potential prognostic ...

This study outlines the clinical course, treatment and the late outcome of infants and children with multifocal atrial tachycardia (MAT). BACKGROUND. Multifocal atrial tachycardia is defined by three distinct P-waveforms, irregular P-P intervals, isoelectric baseline between P-waves and rapid rate on an electrocardiogram.

Multifocal atrial tachycardia (MAT), also known as chaotic atrial arrhythmia, is rare and arises from multiple foci of increased automaticity located within the atria. MAT is defined by the presence of 3 or more P wave morphologies, irregular P-P, R-R, and P-R intervals, an isoelectric baseline between the P waves, and ventricular rate over 100 ...