title: Two QRS complexes for a single P wave: what is the mechanism?
authors.affiliation: Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
authors.forename: Tanyanan
authors.initials: T
authors.lastname: Tanawuttiwat
authors.affiliation: Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
authors.forename: Joseph E
authors.initials: JE
authors.lastname: Marine
mesh_terms: D000200:Action Potentials; D002036:Bundle of His / Q000503:physiopathology*; D005117:Cardiac Complexes, Premature / Q000175:diagnosis* / Q000503:physiopathology; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D013997:Time Factors
keywords: clinical: cardiac mapping - electrogram analysis