Thursday, January 19, 2012

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Major tachycardias

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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