ABSTRACT
Arrhythmias are rhythms of the heart arising outside the normal
conductive pathways or within them, but at an abnormal rate and
with an abnormal ECG pattern. They are conventionally divided into
two categories:
1) supraventricular arrhythmias, which originate from the atria or the
AV node complex (junctional);
2) ventricular arrhythmias, which arise below the AV junction.