<unk><unk>  was previously classified as either type I or type II. That terminology is no longer used. Most individuals with<unk><unk>  will manifest only one of these.  Rarely someone may manifest both types; however, they can only manifest one type at a time. New classification is of two types, typical and atypical<unk><unk> .
Atrial flutter classification
AVNRT classification
Pulseless ventricular tachycardia classification
Paroxysmal supraventricular tachycardia classification
First degree AV block classification
Long QT Syndrome classification
QRS axis and voltage
Third degree AV block classification