Narrow QRS
complex
A. Sinus tachycardia
B. Paroxysmal supraventricular tachycardias
(PSVTs)
1.
Atrial tachycardias, including single-focus or multifocal (MAT)
variants
2.
AV nodal reentrant tachycardia (AVNRT)
3.
AV reentrant tachycardia (AVRT) involving a bypass tract
C. Atrial flutter
D. Atrial fibrillation
Wide QRS complex
A. Ventricular tachycardia
B. SVT/AF or flutter, with aberrant ventricular conduction usually caused by
either of the following:
1.
Bundle branch block patterns
2. Atrioventricular bypass tract (Wolff-Parkinson-White
preexcitation patterns)
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