Note that left atrial enlargement is not able to be diagnosed in the presence of atrial fibrillation because this rhythm is defined by erratic atrial activity and no visible P wave on the ECG.

When right atrial enlargement occurs, it does not take longer for cardiac action potentials to travel through the atrial myocardium (similar to left atrial ... The ECG criteria for diagnosing ...

The following is a summary of “Factors associated with the detection of atrial fibrillation in patients with embolic stroke ...