title: Dissimilar atrial rhythms. A patient with interatrial block.
abstract: A patient with type A Wolff-Parkinson-White syndrome and prolonged interatrial conduction intervals developed atrial flutter during the course of an electrophysiological study. The atrial flutter blocked along the left-to-right conduction pathways in a Wenckebach pattern. The dissimilar atrial rhythms of right atrial tachycardia and left atrial flutter evolved as the interatrial block increased to 2:1 conduction.
mesh_terms: D000368:Aged; D001282:Atrial Flutter / Q000503:physiopathology*; D006327:Heart Block / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D012032:Refractory Period, Electrophysiological; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*