Quick Arrhythmia Guide
Atrial Fibrillation

Atrial Fibrillation EKG tracing
RateVery fast (> 350 bpm) for Atrial, but ventricular rate may be slow, normal or fast
P WaveAbsent - erratic waves are present
PR IntervalAbsent
QRSNormal but may be widened if there are conduction delays

Atrial Fibrillation EKG Reference Arrhythmia Guide Arrhythmia Guide