( Multifocal Atrial Tachycardia ( MAT
Rate : Fast > 100 bpm
Rhythm : Irregular
P- waves : At least three different forms
determined by the focus in the atria
PR Interval : Variable , depends on the focus
QRS : Normal ... 0.06 - 0.10 sec
MAT may be confused with Atrial Fibrillation
however.. MAT has a visible P-wave
MAT is commonly seen in patients with Chronic
Obstructive Pulmonary Diseases COPD
and it may occur in acute myocardial infarction
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