title: Macroreentry as a mechanism of atrial-induced ventricular ectopic beats: a laboratory curiosity?
abstract: During electrophysiologic study in a patient, programmed stimulation of the atrium induced fixed coupled ventricular premature beats on the basis of intraventricular macroreentry. This type of macroreentry, which was reproducible, appears to have been merely a "laboratory curiosity" and never played a clinical role in this patient with chronic recurrent ventricular tachycardia.
mesh_terms: D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D004558:Electric Stimulation; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000503:physiopathology*; D014693:Ventricular Fibrillation / Q000503:physiopathology*