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.

a higher frequency of LV hypertrophy when ECG criteria that are highly reliant on precor-dial voltage are applied, and a lower frequency of LV hypertrophy when ECG criteria that are less reliant ...

The ECG in patients with aortic stenosis frequently shows left ventricular hypertrophy with strain and left atrial enlargement; however, these findings are non-specific for aortic stenosis.