When left atrial enlargement occurs, it takes longer for cardiac action potentials to travel through the atrial myocardium, thus the P wave length becomes longer. Thus the criteria for diagnosing ...

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 ...

These tumors are present in the myocardium and are often multiple ... indicating fibrous tissue. la: Left atrium; lv: Left ventricle; ra: Right atrium; rv: Right ventricle.