The characteristic ECG changes seen in atrial fibrillation are:
This condition is sometimes confused with atrial flutter; where the atrial rate is greater than 250 and there is a consequent atrio-ventricular block because the ventricles cannot match the atrial rate. In atrial flutter there may be a 'saw-tooth' appearance of the baseline. The QRS complexes are normal in atrial flutter.
Last reviewed 09/2020