Diagnosis – Atrial Fibrillation. The diagnosis of atrial fibrillation is confirmed with a standard 12-lead ECG. P waves are absent, coarse “fibrillatory waves” can frequently be seen and sometimes no atrial activity can be identified. The QRS complexes are “irregularly irregular”, with varying R-R intervals.
Read moreDoes atrial fibrillation have P waves?
In comparison with Sinus rhythm, AF has no P wave as the SA node is not functioning. However, the atria generate up to 600 stimuli/min and each stimuli is picked up by the ECG machine.
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