title: Atrioventricular block revisited.
abstract: AV blocks, their definitions and significance, are discussed. Type II, second-degree AV block is infranodal, whereas 2/3 of Type I with BBB are infranodal, 2:1 AV block is neither Type I nor II block. Infranodal blocks require pacing regardless of symptoms.
authors.affiliation: University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
authors.forename: S Serge
authors.initials: SS
authors.lastname: Barold
mesh_terms: D004562:Electrocardiography; D006327:Heart Block / Q000145:classification* / Q000175:diagnosis / Q000628:therapy*; D006801:Humans; D010138:Pacemaker, Artificial; D018579:Patient Selection; D017410:Practice Guidelines as Topic; D009626:Terminology as Topic