This tracing shows sinus rhythm at about 90 beats per ... This is one of the criteria for “left atrial abnormality.” Recent studies have attributed P-wave prolongation to conduction delay ...

The rhythm starts as normal sinus rhythm with a right bundle branch block, then a wide-complex tachycardia develops in a left bundle branch ... were present indicated atrial flutter as the etiology.

Background: Symptomatic prolonged sinus pauses on termination of atrial fibrillation (AF ... P < 0.001) while sinus rhythm maintenance was remarkably higher in the ABL group at the end of follow ...