PR prolongation with alternating wide and narrow QRS complexes: What is the mechanism?

• Vincenzo Russo,
• Rita Pezzella,
• Luigi Mauro Cantiello

Affiliations

Vincenzo Russo

Cardiology Unit, Department of Medical Translational Sciences University of Campania “Luigi Vanvitelli” – Monaldi Hospital Naples Italy

Rita Pezzella

Azienda Ospedaliera Universitaria Federico II Naples Italy

Luigi Mauro Cantiello

Cardiology Unit, Department of Medical Translational Sciences University of Campania “Luigi Vanvitelli” – Monaldi Hospital Naples Italy