Background Atrial fibrillation (AF) and acute myocardial infarction (AMI) share risk factors and are bidirectionally associated. Several studies found higher risks of outcomes in individuals with both ...

LA active emptying volume and fraction were both higher in patients with hypertension. Conversely, peak systolic myocardial atrial strain was significantly reduced in patients with pathological LVH ...

In these patients, severe structural and electrophysiological changes in the atrial myocardium, induced by a few PACs or even occurring in the absence of PACs, are presumed to be key in initiating AF.

it takes longer for cardiac action potentials to travel through the atrial myocardium; thus, the P wave also lengthens. Therefore, the criteria for diagnosing LAE on a 12-lead ECG is as follows ...

it does not take longer for cardiac action potentials to travel through the atrial myocardium (similar to left atrial enlargement). However, the amplitude of the P wave is exaggerated due to the ...

Atrial fibrillation (AF ... the arrhythmogenic triggers (usually the pulmonary veins (PV)) and the atrial myocardium or 2) modifying the atrial substrate responsible for maintaining AF.