title: Cardiac arrhythmias due to ventricular parasystole in a 12-year-old child.
abstract: A 12-year-old girl with multifocal premature ventricular contractions had two fixed-coupled ventricular ectopic foci. A third focus with variable coupling interval and a common interectopic interval satisfied criteria for ventricular parasystole, an infrequently recognized arrhythmia pattern in children.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000503:physiopathology; D002648:Child; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans