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.

Left atrial enlargement can be diagnosed on the ECG or via echocardiography. When left atrial enlargement occurs, it takes longer for cardiac action potentials to travel through the atrial ...

However, in a subgroup of patients with left atrium enlargement ... and twice-daily home ECG recordings for one year. For the ...