When left atrial enlargement occurs, it takes longer for cardiac action potentials to travel through the atrial myocardium; thus, the P wave also lengthens. Therefore, the criteria for diagnosing ...

Left atrial enlargement (LAE) is when the left side ... LAE is frequently a sign of underlying heart conditions such as left ventricular dysfunction, valvular heart disease, hypertension, obesity ...

The chest radiograph will again show left atrial enlargement. This finding is often referred to as a "double density". Elevation of the left mainstem bronchus and a prominent pulmonary artery may ...