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 ...

When right atrial enlargement occurs, it does not take longer for cardiac action potentials to travel through the atrial myocardium (similar to left atrial enlargement). However, the amplitude of ...

Better monitoring of P-wave duration may help physicians ... including AF and atrial remodeling and/or enlargement, play a role in many cases of SCD. 5,6 It is possible that such cases of SCD ...