SUPRAVENTRICULAR ARRHYTHMIAS

By definition, arise in atria, AV node, or AV junction

Causes of supraventricular irritability

1. Adrenergic stimulation or high sympathetic tone
2. Exogenous catecholaminergic substances: caffeine, amphetamines, cocaine, etc.
3. Digoxin
4. Occasionally, EtOH
5. Hyperthyroidism
6. Hypoxia

APC's and JPC's

Atrial Fibrillation

Atrial Flutter

Junctional Tachycardia

MAT

PAT with Block

PSVT