title: Two retrograde atrial responses from one ventricular complex in the permanent form of junctional reciprocating tachycardia.
mesh_terms: D005117:Cardiac Complexes, Premature / Q000503:physiopathology; D002304:Cardiac Pacing, Artificial; D002648:Child; D004594:Electrophysiology; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D013617:Tachycardia, Supraventricular / Q000503:physiopathology*