title: Quantitating AV nodal function: has A1A2 outlived its usefulness?
authors.forename: M H
authors.initials: MH
authors.lastname: Lehmann
authors.forename: R T
authors.initials: RT
authors.lastname: Steinman
authors.forename: M D
authors.initials: MD
authors.lastname: Meissner
authors.forename: C D
authors.initials: CD
authors.lastname: Schuger
mesh_terms: D001283:Atrioventricular Node / Q000502:physiology / Q000503:physiopathology*; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D004594:Electrophysiology; D006327:Heart Block / Q000503:physiopathology; D006801:Humans; D012032:Refractory Period, Electrophysiological