RhythmDock

ECG RHYTHM LAB

Atrial Fibrillation

Disorganized atrial activity produces irregular ventricular timing.

Generated six-second Lead II example · 96 bpm target rate · not a patient recording.

Typical rate
Ventricular rate varies
Regularity
Irregularly irregular
P waves
No discrete P waves
PR interval
Not measurable
QRS
Usually narrow

What to look for

No repeating R–R pattern and no consistent P waves.

Show this rhythm

Sources and limitations