Definition
It is defined as the disorder of rate, rhythm and conduction of cardiac impulse.
Types
1. Impulse arising from SA node (Sinus arrhythmia)—
–– Sinus arrhythmia.
–– Sinus tachycardia.
–– Sinus bradycardia.
–– Sick sinus syndrome.
2. Impulse arising from atria (atrial tachyarryhythmia)—
–– Atrial fibrillation.
–– Atrial flutter.
–– Atrial tachycardia.
–– Atrial ectopics.
3. Impulse aring from AV junction or nodal—
–– Nodal or junctional rhythm.
–– Nodal tachycardia.
–– Nodal ectopics.
4. Impulse arising from ventricles (ventricular tachyarrhythmia)—
–– Ventricular tachycardia.
–– Ventricular fibrillation.
–– Ventricular ectopics.
5. Heart block—
–– SA block.
–– AV block.
–– Bundle brunch block (LBBB, RBBB).